Patent application number | Description | Published |
20090126906 | Isolated Gas Cooling System for an Electronic Display - A preferred embodiment relates to a cooling system and a method for cooling an electronic display. Exemplary embodiments include a transparent gas cooling chamber. The components in the system are preferably housed within the electronic display housing. The cooling chamber defines a gas compartment that is anterior to and coextensive with the electronic display surface. Fans may be used to propel the isolated gas through the cooling chamber. The circulating gas removes heat directly from the electronic display surface by convection. The isolated gas is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though the gas is flowing through a narrow channel over the visible face of the electronic display surface. | 05-21-2009 |
20090126907 | Isolated Gas Heating System for an Electronic Display - A preferred embodiment relates to a heating system and a method for heating an electronic display. A preferred embodiment includes a transparent gas heat-transfer chamber which may be coexistent with the viewable display surface. The heating system defines two gas compartments that are anterior and posterior to the electronic display and are in gaseous communication. Fans may be used to propel the isolated gas through the two chambers. The circulating gas transfers heat to the electronic display surface by convection. The isolated gas is preferably transparent or at least semi-transparent. | 05-21-2009 |
20090126914 | Isolated Gas Cooling System for Cooling Electrical Components of an Electronic Display - A preferred embodiment relates to a cooling system and a method for cooling an electronic display and its electronic components. An exemplary embodiment includes a transparent gas cooling chamber. The electronic components which operate the system are preferably housed both within the electronic display housing and within the cooling chamber. The cooling system defines a gas compartment that is anterior and posterior to the electronic display surface. Fans may be used to propel the isolated gas through the cooling system. The circulating gas removes heat directly from the electronic display surface as well as the electronic components which operate the display. The isolated gas is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though the gas is flowing through a narrow channel over the visible face of the electronic display surface. | 05-21-2009 |
20090129021 | GAS STATION TELEVISION - Preferred embodiments relates to a cooling system and a method for cooling an electronic display. Embodiments include a transparent liquid cooling chamber, a reservoir tank, and a pump. The components in the system are preferably housed within the electronic display housing. The cooling chamber defines a fluid compartment that is anterior to and coextensive with the electronic display surface. Circulating coolant removes heat directly from the electronic display surface by advection. In order to view the display, the coolant fluid is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though coolant is flowing over the visible face of the electronic display surface. | 05-21-2009 |
20090135365 | Isolated Cooling System Having an Insulator Gap and Front Polarizer - An exemplary embodiment relates to a cooling system and a method for cooling an electronic display. A preferred embodiment includes a transparent gas cooling chamber. The transparent gas cooling chamber may have a linear polarizer. The components in the system are preferably housed within the electronic display housing. The cooling chamber defines a gas compartment that is anterior to and coextensive with the electronic display surface. Fans may be used to propel the isolated gas through the cooling chamber. The circulating gas removes heat directly from the electronic display surface by convection. The isolated gas is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though the gas is flowing through a narrow channel over the visible face of the electronic display surface. | 05-28-2009 |
20090213304 | SYSTEM FOR THERMALLY CONTROLLING DISPLAYS - Exemplary embodiments provide a system for thermally controlling an electronic display. A glass substrate containing a pyrolytic electrically conductive layer is utilized. The electrically conductive layer may be used as a passive thermal insulator or may be electrically energized to further heat the glass substrate. The glass may be used with a closed loop plenum which may further heat/cool the display. Additional glass layers may be added in order to polarize light or provide anti-reflective properties. | 08-27-2009 |
20090241388 | ADVERTISING DISPLAYS - Exemplary embodiments comprise static and dynamic advertising displays where the backlight is provided by any one of the following: LED's, organic light emitting diodes (OLED), field emitting display (FED), light emitting polymer (LEP), and organic electro-luminescence (OEL). The backlights for both the static and dynamic advertising displays may be constructed of multiple tiles of lights, such that a single tile may be replaced without having to replace the entire backlight assembly. The display may be mounted on a vertical surface, and components may be repaired or replaced without having to remove the entire display from its mounted position. | 10-01-2009 |
20090243501 | COMBINED SERIAL/PARALLEL LIGHT CONFIGURATION - Exemplary embodiments connect lights in both series and parallel. The lights can be LEDs, organic light emitting diodes (OLED), field emitting display (FED), light emitting polymer (LEP), or organic electro-luminescence (OEL). Exemplary embodiments also mount the lights on a printed circuit board (PCB) which has low thermal resistivity between the surface containing the lights and the opposite surface. The opposite surface may be metallic, and air may be forced over this surface in order to cool the assembly. | 10-01-2009 |
20090244472 | Constricted Convection Cooling System for an Electronic Display - Preferred embodiments provide a cooling system for an electronic display. A constricted convection channel is used to force cooling air against a posterior surface of the electronic display. Fans may be used to propel or pull air through the constricted convection channel in a substantially uniform manner. A refrigeration unit or thermoelectric module may be employed to cool or heat the air traveling through the constricted convection channel. Some embodiments include a closed loop which extracts heat (or adds heat) to the front display surface. | 10-01-2009 |
20090251397 | LIQUID CRYSTAL FLAT PANEL DISPLAY WITH AN INTEGRAL HEATER OF PREDETERMINABLE CAPACITY - A flat panel liquid crystal display has a front plate and a rear plate with a layer of liquid crystal material maintained in a cavity between them. A thin film transistor array layer is disposed in the cavity, as is an integral heater with a grid of intersecting sets of horizontal and vertical conductors. The heating capacity of the heater is predeterminably set by selectively interrupting continuity of at least some of the intersecting conductors. In some embodiments, the discontinuities occur in only one set of the intersecting conductors. | 10-08-2009 |
20090251467 | METHOD FOR MAPPING OPTICAL PROPERTIES FOR A DISPLAY DEVICE - Exemplary embodiments provide a method for characterizing the optical display properties of a display. ISO-Inversion and ISO-Contrast charts are generated to pinpoint limitations in the display and trouble shoot the same. | 10-08-2009 |
20090251473 | RESOLVING IMAGE / DATA MISMATCH VIA ON-OFF PATTERN - A two-dimensional panel, particularly a liquid crystal display device, has a maximum display area with a width of (T×M) addressable channels. The addressable channels are addressed through a plurality of T source channel integrated circuits (ICs), with each source channel IC having M source channels. The number of addressable channels exceeds the number of channels of data in an image display data array having a width of W pixels, each pixel comprising P subpixels in the width dimension. The excess addressable channels are distributed symmetrically across the width dimension of the displayed image. In other embodiments the number of addressable channels is less than the number of channels of data and excess channels of data are excluded symmetrically across the width dimension of the displayed image. Further embodiments distribute excess addressable channels symmetrically across the height dimension or exclude excess channels of data symmetrically across the height dimension. | 10-08-2009 |
20090251602 | System and Method for Providing Video and Audio Signals to Multiple Displays - A system and method for providing digital AV signal to multiple displays where the digital AV signal is displayed simultaneously and sychronized. Exemplary embodiments utilize serializers, de-serializers, and clock cleaners to transmit the data to a chain of display nodes. The display nodes convert the serial data stream into a parallel data stream. The parallel data stream is de-jittered and used to drive a display and optional audio system. The parallel data stream is then converted back into a serial data stream and sent to the next display node in the chain. A clock present in the data stream allows synchronization of all the displays in the chain. A distribution display node may be used at any display node location to increase the number of chains in the data delivery system. | 10-08-2009 |
20090254439 | Touch Screen Device With Fuel Pump Access - Embodiments provide a touch screen display in proximity to a fuel pump. The touch screen display presents a graphical user interface (GUI) containing a plurality of in-store products available for purchase. Exemplary embodiments may contain a card reading device whereby in-store items selected for purchase may be purchased at the fuel pump. A second display may be placed within the convenience store or restaurant so that purchased items may be prepared for pickup by the user. Other embodiments may provide an ordering system in proximity to the pump where the in-store goods are purchased within the store. Exemplary embodiments would be capable of producing high-definition video on the touch screen display. Some embodiments also include audio systems and proximity sensors. Wired or wireless electrical connectivity may be used to send the video and/or GUI data to the touch screen display. | 10-08-2009 |
20090256851 | METHOD FOR REDUCING VIDEO IMAGE LATENCY - Image latency is reduced in a video display system where an image is displayed for a stroke video frame period. The system has a display device and a plurality of memory buffers, each of which is adapted to receive image data (in a receiving condition) or to display data to the display device (in a display condition). The stroke video frame period is divided into at least two time periods and the number of memory buffers provided is at least the number of time periods per stroke video frame period. One of the memory buffers is in the display condition for a first time period, with the remaining memory buffers in the receiving condition. At the end of the time period, the memory buffers are rotated so that the displayed memory buffer moves to the receiving condition and one of the receiving buffers moves into the display condition. | 10-15-2009 |
20090260028 | VIDEO BUFFER FOR USE IN ADVERTISEMENT DISPLAYS - A video buffer system and method for use with advertising display systems. Programming packets are stored at the video buffer and displayed in a continuous loop until the next programming packet has been received and stored. The video buffer system allows for displays to continuously display advertisements during data stream interruption or delay. The video buffer system also records the number of times an advertisement has been played to ensure accurate billing for the advertisement. | 10-15-2009 |
20090288756 | FRAME SEAL METHODS FOR LCD - A method for providing a bonded glass component for use in an LCD display. A frame is sealed to a glass component. A barrier coat is then applied to the sealant. An adhesive is poured over the entirety of the glass component and the frame. Starting at one edge of the glass component a second glass component is lowered down until an adhesive wave progresses across the glass component, until the second glass component in position. | 11-26-2009 |
20090289580 | BACKLIGHT ADJUSTMENT SYSTEM - A preferred embodiment relates to controlling the amount of backlight in an electronic display to account for the temperature in the backlight cavity. Another embodiment relates to a system for controlling the amount of backlight based on both the temperature in the backlight cavity and the amount of ambient light. The embodiments are especially useful in electronic displays which are subjected to cold or warm temperatures and displays which are placed in very bright environments. Exemplary embodiments allow the display to remain visible, while avoiding possible damage due to high levels of heat or cold. | 11-26-2009 |
20090310065 | REMOVABLE TILES FOR ELECTRONIC DISPLAY BACKLIGHTS - Exemplary embodiments include a backlight assembly for an electronic display wherein said backlight assembly is comprised of a plurality of tiles. Each tile has a plurality of lights attached to it, such that when a single light or group of lights fail, the tile may be replaced without having to replace the entire backlight assembly. The lights in the assembly may be any one of the following: light emitting diodes (LED), organic light emitting diodes (OLED), field emitting display (FED), light emitting polymer (LEP), and organic electro-luminescence (OEL). Embodiments also allow tiles to be removed from the rear of the display and dissipate heat from the lights to the rear of the backlight assembly. | 12-17-2009 |
20090310066 | LED tile Luminance control circuitry and display containing the same - Exemplary embodiments include a backlight assembly for a display wherein the backlight assembly is comprised of a plurality of tiles. Each tile has a plurality of lights attached to it, such that when a single light or group of lights fail, the tile may be replaced without having to replace the entire backlight assembly. The current draw and/or illumination of each tile is calibrated and maintained throughout the life of the display to ensure a uniform distribution of light across the backlight assembly. | 12-17-2009 |
20090322987 | CHANNELIZED PLATE - Preferred embodiments utilize a plurality of optical channels to effectively aim the light emitted by a liquid crystal display (LCD). Embodiments may also change the nominal and range of viewing angles of light in two or three dimensions in order to confine the emitted light towards the intended observer. | 12-31-2009 |
20100028108 | TRANSPORTABLE CARRIER COMPATABLE WITH A RETRACTABLE PIN TOOL - A device for providing support to an LCD and its corresponding components during various manufacturing steps. A first carrier section is positioned on a work surface and is then loaded with an LCD as well as drivers to be bonded to the tabs of the LCD. Once the desired work has been performed a second carrier section is mated with the first carrier section and a closing means is utilized to position the two carrier sections in a closed position. Once the two carrier sections have been placed in a closed position about the LCD and other components, the entire piece may be safely removed from its position on the work surface for further processing, storage, etc. Exemplary embodiments also relate to a method of providing support to an LCD and its corresponding components during various manufacturing steps. | 02-04-2010 |
20100043966 | PHOTOINITIATED OPTICAL ADHESIVE AND METHOD FOR USING SAME - A method for bonding glass components using an encapsulated photo-initiated optical adhesive, and the resulting glass assemblies produced by the same. A mixture containing a catalyst and a resin is provided where at least one of either the catalyst or the resin is encapsulated. The mixture is applied to a glass component. The encapsulated catalyst may then be exposed to ultraviolet light causing the capsules to release the portions contained therein and combine to form an adhesive. A second glass component is then placed on the adhesive so that the adhesive is interposed between the glass components and the adhesive is permitted to cure. Alternatively, the mixture may be exposed to UV light after the second glass component is placed. An exemplary method uses a frame with the first glass component to create a uniform thickness of adhesive and provide a low level of optical defects. Barrier coats and skirting tape may also be used. | 02-25-2010 |
20100092005 | Multidirectional Multisound Information System - Exemplary embodiments provide an information system adapted to focus a plurality of audio messages to a plurality of different locations. As a consumer passes a display, their attention is attracted based on the series of messages. Further, a consumer can obtain more and different information as they change their position. Exemplary embodiments may also display a different image to the consumer depending on the position of the consumer relative to the display. Further embodiments may utilize touch-screen technology to allow a user to select an icon from the screen and obtain further information either through additional messages, video, or both. | 04-15-2010 |
20100104003 | SYSTEM AND METHOD FOR SECURELY TRANSMITTING VIDEO DATA - Exemplary embodiments provide a system and method for securely transmitting video data to an electronic display. The video data may be transmitted using a wired or wireless application. Raw video data is encoded as a plurality of JPEG frames. A plurality of packets are created which may contain one frame or a portion of a frame of video. Each packet contains a unique header with information about the packet and a unique security key. After transmission each packet may be analyzed to determine if it was the intended transmission. The packets are re-assembled and displayed if they are the intended transmission. A default image or video is displayed if the received transmission is not the intended transmission. If a single packet is missing or is unintended, the previous packet may be repeated. Additional standard wireless encryption may also be used if utilizing a wireless application. | 04-29-2010 |
20100109974 | SYSTEM FOR SUPPLYING VARYING CONTENT TO MULTIPLE DISPLAYS USING A SINGLE PLAYER - A system for displaying content on multiple electronic displays utilizing a single video player and transmitter. Some displays may show dynamic video and the remaining displays may show static images. Alternatively, every display may be showing static images. The player provides frames of video which may be encoded with unique display identifiers which direct the system to display the proper frames on the proper displays. The transmitter may be in wireless or hard-wired electrical communication with the display receivers. If using a hard-wired embodiment, the displays may be daisy-chained together to reduce the length of wire/cable needed. | 05-06-2010 |
20100188342 | Method and System for Positioning a Graphical User Interface - Exemplary embodiments provide a method and system for shifting a graphical user interface around a touch screen display so that the menus and icons can be utilized from a plurality of user access positions. A first locating touch from the user may be used to determine the user's access position and the graphical user interface may be located on the display based on this locating touch. Embodiments allow touch screen menus and icons to be automatically positioned around a user without having to move the entire display or forcing the user to reposition themselves. Exemplary embodiments provide large portrait-oriented displays for use in restaurants, and especially in drive through applications and may also contain an electrical connection to a second display located within the restaurant. | 07-29-2010 |
20100220258 | COMBINED SERIAL/PARALLEL LIGHT CONFIGURATION AND SINGLE LAYER PCB CONTAINING THE SAME - An LED circuit using a combination of series and parallel arrangements for optimum current sharing between LEDs. The current paths allow an LED to fail while minimizing the effect on other LEDs and noticeable luminance variance across the circuit. Some embodiments use metallic PCB technology which permits optimal thermal regulation of heat generated by the LEDs. Exemplary embodiments can be used with a single-layer PCB where only one layer of conducting material must be placed on the substrate. This results in a thinner, lighter, and cheaper assembly. The rear surface of the PCB may contain heat sinks or fins and may have air (or other gaseous matter) moved across the surface and/or heat sinks to facilitate cooling of the assembly. An LCD assembly using the same is also disclosed. | 09-02-2010 |
20100226091 | Shared Isolated Gas Cooling System for Oppositely Facing Electronic Displays - A system and method for cooling back to back electronic displays. Transparent first and second gas chambers are co-existive with the front display surfaces of the first and second electronic displays. A closed loop of isolated gas enters the first and second gas chambers and contacts the front surfaces of the electronic displays, where it may extract heat from the front display surfaces. The isolated gas is then directed into a cooling chamber where it is cooled and re-introduced into the first and second gas chambers. Fans may be used to propel the isolated gas through the cooling chamber and the first and second gas chambers. The circulating gas removes heat directly from the electronic display surfaces. The isolated gas is transparent or at least semi-transparent to ensure that the image quality of the electronic displays is minimally impacted. | 09-09-2010 |
20100231563 | Display Characteristic Feedback Loop - A system and method for maintaining similar optical performance over two electronic displays. A color light sensor is placed in front of the viewable area of each electronic display and is used to measure one or more optical properties in order to balance the two (or more) electronic displays. The user may be notified when a display is malfunctioning or the displays are not performing within acceptable ranges. The display may store optical data locally for later retrieval by the user. The user may access the optical data through a network connection with the display. One or more displays may be placed adjacent to one another and their optical properties may be measured and balanced so that the displays match one another or can be used as a harmonious array. | 09-16-2010 |
20100232107 | Cooling System for Outdoor Electronic Displays - A cooling system for an electronic display. Transparent cooling chambers are used to extract heat from the front display surface of an electronic display. A refrigerated air source is in gaseous communication with the cooling chamber. Additional fans may be used to cool other components of the electronic display. Multiple displays may be used where each display and the refrigerated air source is housed within the housing. The housing contains air inlet and air exhaust ports. An air curtain device may be used with some embodiments. An open-loop, closed-loop, or both types of designs may be used with the cooling chambers. Temperature sensors may allow the refrigerated air source(s) to be selectively engaged depending on the temperature of the air within the cooling chamber or the temperature of the front display surface. Ambient temperature sensors may also direct the switch between open and closed loops. | 09-16-2010 |
20100237697 | SYSTEM AND METHOD FOR CONTROLLING THE OPERATION PARAMETERS OF A DISPLAY IN RESPONSE TO CURRENT DRAW - A system and method for controlling the power consumption of an electronic display. A maximum current value may be selected where above this value the risk to damage to the display or local circuitry may be jeopardized. Ramp-wise and/or gradual controls of the display parameters such as fan speed and backlight levels may reduce the current draw during extreme situations and line voltage fluctuations. Embodiments allow the display to continue operation without risking an overload of the local circuit or damage to the display. Further embodiments may be used to limit the power consumption of a display in order to minimize energy usage. Several parameters can be measured and controlled simultaneously to provide a minimal amount of energy usage while minimizing any noticeable difference in images. | 09-23-2010 |
20100238299 | Display Characteristic Feedback Loop - A system and method for remotely monitoring and transmitting optical data for an electronic display to a user. A color light sensor is placed in front of the viewable area of an electronic display and is used to measure various optical properties to determine if the display is functioning properly. The user may be notified when a display is malfunctioning. The display may store optical data locally for later retrieval by the user. The user may access the optical data through a network connection with the display. One or more displays may be placed adjacent to one another and their optical properties may be measured and balanced so that the displays match one another or can be used as a harmonious array. A watermark can be used to confirm that specific video segments were actually displayed by the electronic display. | 09-23-2010 |
20100253613 | LED BACKLIGHT AND ELECTRONIC CONTROL - Embodiments comprise a backlight device and a method for controlling the chromaticity and/or luminance of the backlight device. More particularly, embodiments relate to a backlight device for a display which utilizes an array of LED pairs to create a desired chromaticity and luminance of light, whereby the chromaticity and luminance can be closely monitored and maintained throughout the life of the display. A pair of LEDs are used in an exemplary embodiment where the pair contains two blue LEDs with the first LED coated in a red phosphor and the second LED coated in a green phosphor. | 10-07-2010 |
20100296245 | System for Using Constricted Convection with Closed Loop Plenum As the Convection Plate - A cooling system and a method for cooling an electronic display. A preferred embodiment utilizes a closed loop cooling system in a constricted convection cooling setup to remove heat from the backlight of a display assembly. Cooling air can be pulled or pushed through a gap between the display (or backlight) and a rear cooling chamber. The resulting warm air can then be exhausted out of the display housing. The cooling air may be air conditioned or may be exposed to a thermoelectric device. A thermostat may be used so that cooling fans are only energized when the temperature reaches a predetermined point. | 11-25-2010 |
20100329471 | AMBIENT NOISE COMPENSATION SYSTEM - An ambient noise compensation system having an automatic gain control to adjust the volume of a desired sound in a listening area. A sound pick-up may be placed in the listening area to capture the sound level, including both the desired sound and ambient noise. A measured value is then determined based on the sound level received by the sound pick-up. The measured value may then be compared to a predictive value to determine an acceptable range. The gain control automatically adjusts the volume of the desired sound to maintain the measured sound within the acceptable range. | 12-30-2010 |
20110013114 | Heat Exchanger for an Electronic Display - A cooling assembly for an electronic image assembly having an open and closed gaseous loop. A closed gaseous loop allows circulating gas to travel across the front surface of an image assembly and through a heat exchanger. An open loop allows ambient gas to pass through the heat exchanger and extract heat from the circulating gas. An optional additional open loop may be used to cool the back portion of the image assembly (optionally a backlight). Ribs may be placed within the optional additional open loop to facilitate the heat transfer to the ambient gas. The cooling assembly can be used with any type of electronic assembly for producing an image. | 01-20-2011 |
20110013367 | ELECTRONIC DISPLAY WITH MOUNT-ACCESSIBLE COMPONENTS - An electronic display assembly where the components can be removed and serviced or replaced without having to remove the display from its position. A backplane may be in electrical communication with the image producing assembly and may contain a plurality of blind mate connectors. Various electronic assemblies may be connected to the blind mate connectors. An access panel may provide access to the electronic assemblies so that they can be removed from the housing. N+1 power supplies may be used so that if one fails the unit would continue to operate until the failed power supply could be replaced. The electronic assemblies may be removed from the left side, right side, top, or bottom surfaces of the display housing. Any flat panel electronic display may be used. | 01-20-2011 |
20110096246 | Visual Identifier for Images on an Electronic Display - A system and method for displaying images or video on an electronic display. A unique identifier may be embedded within the frames of images or video and detected by a light sensor. The data from the light sensor is analyzed to determine if the proper image or video was actually shown at the display. Some embodiments analyze the data from the light sensor in real time and may stop displaying the image or video if the data is not in the format of a unique identifier. Using this embodiment, the system can prevent unintended images or video from being shown on the display. | 04-28-2011 |
20110102704 | WHITE LED FOR LIQUID CRYSTAL DISPLAY BACKLIGHTS - A light emitting diode (LED), method for optimizing an LED having characteristics which are tailored for a liquid crystal color filter set, and a liquid crystal display (LCD) using the LED are disclosed. The spectral response of the LED is optimized to provide the preferred optical properties when its light is transmitted through the color filter set and liquid crystal stack. Embodiments provide a diode chip which intrinsically emits light with wavelengths primarily within the blue visible spectrum (‘blue chip’). Surrounding the chip would be a first layer of phosphor that emits light with wavelengths primarily within the yellow-green region of the visible spectrum via phosphorescence with the blue light which is emitted from the diode chip (‘yellow-green phosphor’). There would also preferably be a second layer of phosphor that emits light with wavelengths primarily within the red region of the visible spectrum via phosphorescence with the blue light which is emitted from the diode chip (‘red phosphor’). | 05-05-2011 |
20110116000 | THERMAL PLATE WITH OPTIONAL COOLING LOOP IN ELECTRONIC DISPLAY - An electronic display having one or more thermal plates in thermal communication with an image assembly and a thermally-conductive housing (and optional door frame). In some embodiments, the thermal plate is in thermal communication with the door frame which is in thermal communication with the housing. A channel may be defined between a transparent plate assembly and the image assembly where a fan may force cooling air through the channel. The cooling air may also pass through apertures in the thermal plate(s). An exemplary image assembly may provide an LED edge-lit LCD or an OLED display. In some embodiments, two displays may be provided in a back-to-back orientation within a single housing. The display may dissipate heat without the need to ingest ambient air. | 05-19-2011 |
20110116231 | FIELD SERVICEABLE ELECTRONIC DISPLAY - An electronic display which can be serviced without having to remove the display from its mounted position. A front housing and a rear housing are hingedly attached so that the front housing can rotate and allow access to the interior of the display. An axial force mechanism can be used to aid in rotating the front housing to an open position. A locking collar, support member, or axial locking member may be used to ensure that the front housing remains open. A removable front glass assembly or removable glass panel may be used with an exemplary embodiment. The front glass assembly or glass panel can be easily replaced if it becomes damaged by minimally-trained personnel. Gutters may be used between the front and rear housing as well as the front housing and front glass assembly to ensure an adequate seal against contaminates. | 05-19-2011 |
20110163691 | System and Method for Managing Backlight Luminance Variations - An LED assembly containing separately-controllable regions of LEDs with temperature sensing devices placed to measure the temperature within each region of LEDs. When the temperature difference between two regions becomes higher than an acceptable maximum, the system may adjust the power to one or more LED regions to maintain luminance uniformity. The regions can be arranged vertically or horizontally or both. A software processor may be used to interpret the data from the temperature sensing devices and control the power sent to the various LED regions. Embodiments can be used at least in LED backlights for LCD displays or for LED displays. | 07-07-2011 |
20110242839 | NVIS COMPATIBLE BACKLIGHT DEVICE AND LCD USING THE SAME - A backlight device for a liquid crystal display containing a substantially planar light guide with a light emission surface and a light-collecting portion opposing the light emission surface. A pair of opposing side portions may define the periphery of the light guide. A first plurality of LEDs are placed so as to direct the emitted light into the light-collecting portion. An NVIS filter is preferably placed adjacent to at least one of the side portions. A second plurality of LEDs are placed to direct the emitted light through the NVIS filter and into a side portion of the light guide. Alternative embodiments can contain NVIS filters and LEDs along additional edge portions of the light guide. Some embodiments may use directing elements or slanted surfaces of the light guide to direct the light from the second plurality of LEDs into the edge portions of the light guide. | 10-06-2011 |
20110261523 | Expanded Heat Sink for Electronic Displays - A system for cooling various components of an electronic display. One or more heat-generating components are preferably placed in thermal communication with a plate and ribs. One or more fans are placed to draw cooling air along the ribs to remove the heat removed from the component. Some embodiments may place the electronic image assembly in thermal communication with the ribs to remove heat from the electronic image assembly. Exemplary embodiments have power modules and the electronic image assembly in thermal communication with the ribs. Conductive thermal communication is established between the ribs and the components in the exemplary embodiments. | 10-27-2011 |
20110280005 | Modular Distributed Components for LED Backlight - A system for powering an LED backlight where power assemblies have electrical communications ran through pass through apertures in a mounting plate and LED backlight panel. A channel may be defined between the mounting plate and the LED backlight panel (or optional thermal plate attached to the rear portion of the LED backlight panel). Sub-channels can be created within the channel which are defined by ribs which connect between the mounting plate and the LED backlight panel (or optional thermal plate attached to the rear portion of the LED backlight panel). Cooling air can be prevented from entering one or more specific sub-channels so that electrical connections can pass through the mounting plate, LED backlight panel, and sub-channel without the risk of cooling air contaminates entering one of the pass through apertures. | 11-17-2011 |
20120012300 | SYSTEM AND METHOD FOR SELECTIVELY ENGAGING COOLING FANS WITHIN AN ELECTRONIC DISPLAY - A system and method for cooling an electronic image assembly having a plurality of channels place behind the electronic image assembly. A first fan may be used to force cooling gas through a first grouping of channels while a second fan may be used to force cooling gas through a second grouping of channels. Temperature sensing devices may be positioned so as to measure the temperature of the first and second groupings of channels. The speeds of the first and second fans may be adjusted based on the temperature measurements of the channel groupings. Additional fans with additional temperature sensing devices may be used for further accuracy and control over the temperature gradients of the electronic image assembly. Manifolds may be used to distribute/collect cooling gas to/from the channels. | 01-19-2012 |
20120026432 | SYSTEM AND METHOD FOR MAINTAINING A CONSISTENT TEMPERATURE GRADIENT ACROSS AN ELECTRONIC DISPLAY - An electronic display which can be mounted above a paved surface in an outdoor environment. A surface or plate is placed behind the electronic display to define a gap where cooling air can be drawn through said gap in order to cool the electronic display. A plurality of ribs may be placed within the gap and in thermal communication with the electronic display. The density of the ribs may be varied according to the inlet and exhaust openings for the cooling air. The ribs may be placed at a higher density near the exhaust to account for the increase in temperature of the cooling air as it travels through the gap. | 02-02-2012 |
20120038849 | Expanded Heat Sink for Electronic Displays and Method of Producing the Same - An expanded heat sink for transferring heat from an electronic display component to a path of cooling air is disclosed. A continuous sheet may define a series of channels where the cooling air is blown through the channels and along the continuous sheet. When viewed along the path of the cooling air and oriented horizontally, the continuous sheet may define a series of four-sided polygons having top, bottom, left side, and right side portions where either the top or bottom portions are absent from each polygon. The absent top portions may be supplied by a front plate or the rear portion of an electronic display. The absent bottom portions maybe supplied by a rear plate. One or more components of the electronic display may be placed in thermal communication with the sheet and/or front/rear plates to transfer heat from the components to the cooling air. | 02-16-2012 |
20120057082 | System and Method for Remotely Identifying Display Components - A system and method for remotely-identifying the components and/or software revisions within an electronic display. An electronic storage device may be placed within an electronic display assembly and placed in electrical communication with a network connection. The electronic storage device may contain identification numbers for one or more components or software revisions within the display. A computing device may be in electrical communication with the network connection so that the identification numbers on the electronic storage device may be accessed remotely. If a particular component or software revision is desired, the computing device may be used to search the contents of each electronic storage device at each display to determine which displays contain the desired component or software revision. | 03-08-2012 |
20120062804 | MODULAR SYSTEM FOR CONTROLLING A LIQUID CRYSTAL DISPLAY - A removable video module for a backlit liquid crystal display (LCD) contained within a chassis and having a timing and control board (TCON) with a board edge connector and an access opening in the chassis. The module preferably having a video input connection and means for generating a Low Voltage Differential Signaling (LVDS) video. The video module also preferably has a board edge connector adapted to connect with the board edge connector on the TCON, where the video module is adapted to fit through the access opening to connect with the TCON. Other embodiments may utilize a backplane where the video module and a power module are adapted to connect with the backplane and electrically communicate with the rest of the display. Outputs for either the video signal, power supply, or both may be provided so that a plurality of displays may be daisy-chained together. | 03-15-2012 |
20120062819 | LED CIRCUIT WITH ZENER DIODES - A light emitting diode (LED) circuit having a plurality of LEDs electrically connected in series with a zener diode electrically connected to each LED in parallel. If an LED were to fail, the current can be routed around the failed LED, through the zener diode, and continue through the rest of the LEDs in the series connection. Thus, a failure in one LED does not cause the entire series string to lose their illumination. Some embodiments may place several LED strings in parallel with one another. Exemplary embodiments may mount the LCDs on a metal core printed circuit board (PCB). Further embodiments may place a thin metallic sheet or metallic surface on the rear surface of the PCB and in thermal communication with the PCB and/or LEDs. | 03-15-2012 |
20120081341 | REDUNDANT POWER/CONTROL SYSTEM FOR LIQUID CRYSTAL DISPLAYS - A system for powering and controlling an LED-backlit liquid crystal display (LCD) where redundancy is used to provide two independent paths from a pair of power supplies to the LED backlight. Further, two independent paths are also used from a pair of power supplies to the LCD. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring circuits which can direct another path to be used by the system. Two separate control circuits for the LCD may be used so that either one may be used to control the LCD if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system. | 04-05-2012 |
20120106081 | SYSTEM FOR COOLING AN ELECTRONIC IMAGE ASSEMBLY WITH A HEAT EXCHANGER HAVING INTERNAL FANS - A system for cooling an electronic image assembly using a heat exchanger with an internal fan assembly. Circulating gas may also be used to cool a front portion of the electronic image assembly or any other internal cavity of the electronic display housing. The circulating gas may be drawn through a heat exchanger so that heat may be transferred to an ambient gas. The heat exchanger may have an internal fan assembly for drawing ambient air through the heat exchanger and exhausting it out of the display housing. The heat exchanger may be divided into two portions so that the fan assembly is placed between the two portions. | 05-03-2012 |
20120147293 | REDUNDANT BACKLIGHT FOR LIQUID CRYSTAL DISPLAYS - A redundant LED backlight and method for controlling the same. At least two plurality of LEDs are used to create a backlight where any individual set of LEDs may be driven at power level P to provide the desired overall luminance for the backlight. If two plurality of LEDs are used, then the LEDs may be driven simultaneously at one-half P during normal operations until a failure has been detected in one of the plurality of LEDs. In alternate embodiments, four plurality of LEDs may be used and driven simultaneously at one-fourth P during normal operations until a failure has been detected in one of the plurality of LEDs. The LEDs may be in edge-lit, direct-lit, or any combination of these two orientations. Upon failures, only one plurality of LEDs may be used to provide operation of the LED backlight and any associated LCD device. | 06-14-2012 |
20120206687 | SYSTEM AND METHOD FOR THERMALLY CONTROLLING AN ELECTRONIC DISPLAY WITH REDUCED NOISE EMISSIONS - An assembly for cooling an electronic image assembly having a rear channel placed behind the image assembly and a heat exchanger for accepting ambient air. The system contains a first fan placed within the heat exchanger to force ambient air through the heat exchanger and the rear channel. A second fan may be used to force circulating gas through an interior portion of the display housing and through the heat exchanger in order to transfer heat to the ingested ambient air. | 08-16-2012 |
20120268674 | LIQUID CRYSTAL FLAT PANEL DISPLAY WITH AN INTEGRAL HEATER OF PREDETERMINABLE CAPACITY - A flat panel liquid crystal display has a front plate and a rear plate with a layer of liquid crystal material maintained in a cavity between them. A thin film transistor array layer is disposed in the cavity, as is an integral heater with a grid of intersecting sets of horizontal and vertical conductors. The heating capacity of the heater is predeterminably set by selectively interrupting continuity of at least some of the intersecting conductors. In some embodiments, the discontinuities occur in only one set of the intersecting conductors. | 10-25-2012 |
20120295051 | GLASS ASSEMBLY - A glass assembly having a first glass component, a frame overlapping the perimeter and top surface of the first glass component, a second glass component atop the frame, and a layer of adhesive interposed between the two glass components. Also disclosed is a frame for bonding two glass components. Also disclosed is a protective glass assembly for a LCD having a top surface and perimeter. The protective glass assembly having a frame which overlaps the top surface and perimeter of the LCD, a glass component placed atop the frame, and a layer of optical adhesive interposed between the LCD and the glass component. | 11-22-2012 |
20120327600 | System for Using Constricted Convection with Closed Loop Cooling System As the Convection Plate - A cooling system and a method for cooling an electronic display is disclosed. A preferred embodiment utilizes a first gas chamber positioned anterior to the front display surface and a second gas chamber in gaseous communication with the first gas chamber and positioned posterior to the electronic display. The space between the second gas chamber and electronic display defines a gap, where ambient air can be drawn through the gap in order to cool the electronic display. A cooling chamber fan preferably forces gas to circulate through the first and second gas chambers, in order to remove heat from the front display surface. | 12-27-2012 |
20130016080 | BACKLIGHT ADJUSTMENT SYSTEM - A preferred embodiment relates to controlling the amount of backlight in an electronic display to account for the temperature in the backlight cavity. Another embodiment relates to a system for controlling the amount of backlight based on both the temperature in the backlight cavity and the amount of ambient light. The embodiments are especially useful in electronic displays which are subjected to cold or warm temperatures and displays which are placed in very bright environments. Exemplary embodiments allow the display to remain visible, while avoiding possible damage due to high levels of heat or cold. | 01-17-2013 |
20130027370 | SYSTEM AND METHOD FOR DYNAMIC LOAD SHARING BETWEEN ELECTRONIC DISPLAYS - A system and method for allocating power to a plurality of displays is disclosed. An exemplary system preferably includes an AC current sensor, a power load sharing controller, ambient light sensors for each display, and a brightness controller for each display. A maximum total current draw may be selected. The ambient light contacting each display may be measured and a corresponding desired brightness calculated. Depending on the present amount of current draw, the system determines if the displays can be driven at the desired brightness without exceeding the maximum total current draw. If yes, the displays are driven at their desired brightness. If no, the desired brightness for each display may be slightly reduced to prevent exceeding the maximum total current draw. Thus, as the ambient light varies between the displays, the available power may be shared. | 01-31-2013 |
20130170139 | SYSTEM AND METHOD FOR SELECTIVELY ENGAGING COOLING FANS WITHIN AN ELECTRONIC DISPLAY - A system and method for cooling an electronic image assembly having a plurality of cooling gas pathways place behind the electronic image assembly. A first fan may be used to force cooling gas through a first grouping of cooling gas pathways while a second fan may be used to force cooling gas through a second grouping of cooling gas pathways. Temperature sensing devices may be positioned so as to measure the temperature of the first and second groupings of cooling gas pathways. The speeds of the first and second fans may be adjusted based on the temperature measurements of the cooling gas pathway groupings. Additional fans with additional temperature sensing devices may be used for further accuracy and control over the temperature gradients of the electronic image assembly. Manifolds may be used to distribute/collect cooling gas to/from the cooling gas pathways. | 07-04-2013 |
20130170140 | System for Cooling an Electronic Display - A system for cooling an electronic display where an isolating structure may be used to allow ambient air to cool power modules. The isolating structure substantially prohibits contaminants which may be present within the ambient air from contacting sensitive electrical components on the power modules or otherwise. A gasket may be used to seal the interface between the power modules and the isolating structure. Heat sinks may be placed in thermal communication with the power supplies and fans may draw air through a narrow channel in which the heat sinks are located. In some embodiments the narrow channel may have the opposing surface of the channel defined by the rear portion of an LED assembly. Exemplary embodiments may use the ambient air to cool both the power modules and a closed loop of isolated gas within the electronic display. | 07-04-2013 |
20130176318 | REDUNDANT CONTROL SYSTEM FOR LCD - In an exemplary embodiment, each horizontal and vertical conductor of a TFT array may be in electrical contact with a first and second control system. Initially, the entire display is driven by the first control system. When/if a failure occurs in the first control system, it is powered down and the second control system maintains operation of the entire display. Each control system may contain a set of source/gate drivers, display interface board, and power supply. A reversionary button may allow the user to manually switch between control systems. Alternatively, failure may be detected by the display interface boards or a graphics processor. | 07-11-2013 |
20130208200 | DYNAMIC DIMMING LED BACKLIGHT - Disclosed herein is a system for controlling the interactions of light between adjacent subsections of a dynamic LED backlight. Preferred embodiments contain a dividing wall positioned between each adjacent subsection of the LED backlight. The dividing wall may be in contact with the LED backlight and extend away from the LED backlight. The dividing wall may prohibit light from a first subsection from entering an adjacent second subsection at its full luminance. The luminance for each adjacent subsection may be approximately half of the full luminance of each subsection, when measured at the location of the dividing wall. | 08-15-2013 |
20130265525 | Lighting System for Transparent Liquid Crystal Display - Exemplary embodiments provide a lighting system for a transparent LCD having opposing vertical edges, the system having a mullion lighting assembly positioned adjacent to each vertical edge of the transparent LCD, each mullion lighting assembly having sidewalls defining a center channel. A plurality of LEDs are positioned along the sidewall of each mullion assembly and on a side of the sidewall that opposes the center channel. The LEDs are preferably placed in conductive thermal communication with the sidewall. A fan is positioned to draw cooling air through the center channel. A lens may be positioned adjacent to the LEDs to collimate the light. Louvers may be used to direct the emitted light away from the LCD, so as to reflect off the goods within a display case or the cavity within the display case. Some embodiments may use a flange to direct the emitted light away from the LCD. | 10-10-2013 |
20130270975 | FIELD SERVICEABLE ELECTRONIC DISPLAY - An in-field replaceable glass assembly for an electronic display placed within a housing is disclosed. The housing preferably contains a hanger at the top of the housing, where the glass assembly contains a frame surrounding a pane of glass and having a top and bottom. A tab is preferably placed at the top of the frame and adapted to hold the glass assembly in place when slipped over the hanger on the housing. The glass assembly also contains a means for attaching the bottom of the frame to the housing. In some embodiments this means is a threaded post which extends from the frame and passing through a portion of the housing. A nut may be tightened against the post. In other embodiments a threaded fastener may pass through the housing and thread into a female threaded hole within the frame. | 10-17-2013 |
20130271696 | Transparent Liquid Crystal Display on Display Case - Exemplary embodiment disclosed herein provide a point-of-sale advertising system for use with a display case having a front glass sheet positioned in front of a cavity for accepting goods, the system containing a transparent LCD positioned behind the front glass sheet, and a plurality of LEDs positioned adjacent to one pair of opposing edges of the LCD and arranged so that light which is emitted from the LEDs is directed backwards towards the cavity. Further embodiments may also contain a door assembly and frame surrounding the front glass sheet and LCD, a switch positioned to determine when the door assembly is open or closed, and electrical circuitry adapted to turn off the LEDs when the door is open and turn on the LEDs when the door is closed. | 10-17-2013 |
20130278640 | DYNAMIC DIMMING LED BACKLIGHT - A system and method for controlling subsections of an LED backlight for a liquid crystal display (LCD). Exemplary embodiments analyze the histograms for each subsection of the LCD which corresponds with the subsections of the LED backlight in order to produce a proper luminance for the backlight subsection. The proper luminance may be less than the maximum or typical luminance that is produced by common LED backlights. By reducing the luminance the resulting display can have less power consumption, longer lifetime, and higher contrast ratios. The original subpixel voltages for the LCD are re-scaled based on the proper luminance for the backlight subsection. Virtual backlight data may be created to simulate the luminance at each subpixel and the virtual backlight data may be used to re-scale the original subpixel voltages. The virtual backlight data may be used to blend between adjacent subsections of the LED backlight which may be producing different levels of luminance. | 10-24-2013 |
20130278867 | COMBINED SERIAL/PARALLEL LIGHT CONFIGURATION AND SINGLE LAYER PCB CONTAINING THE SAME - An LED circuit using a combination of series and parallel arrangements for optimum current sharing between LEDs. The current paths allow an LED to fail while minimizing the effect on other LEDs and noticeable luminance variance across the circuit. Some embodiments use metallic PCB technology which permits optimal thermal regulation of heat generated by the LEDs. Exemplary embodiments can be used with a single-layer PCB where only one layer of conducting material must be placed on the substrate. A constricted convection plate may be positioned behind the rear surface of the PCB to define a channel. One or more fans may be positioned to force cooling air through the channel. An LCD assembly using the same is also disclosed. | 10-24-2013 |
20130278868 | Optically Isolated Cavity For Light Sensor Feedback in LCD - Disclosed herein is a light emitting diode (LED) backlight assembly having a mounting substrate with a plurality of LEDs where an optically-isolated cavity is positioned near an edge of the mounting substrate. An information block LED is positioned within the optically-isolated cavity so that light emitted from the main LEDs do not interfere with the light emitted by the information block LED. A liquid crystal stack may be positioned above the LEDs where a portion of the liquid crystal stack is designated as an information block which can be measured by a light sensor. The optically-isolated cavity can be formed by light absorbing and/or reflecting material and may contain one or more walls of the backlight cavity. | 10-24-2013 |
20130286326 | CHANNELIZED PLATE - Preferred embodiments utilize a plurality of optical channels to effectively aim the light emitted by a liquid crystal display (LCD). Embodiments may also change the nominal and range of viewing angles of light in two or three dimensions in order to confine the emitted light towards the intended observer. | 10-31-2013 |
20130329363 | Apparatus and Method for Assembling Large Electronic Displays - Provided herein is an electronic display assembly for use with a housing as well as a method for assembling an electronic display assembly within a housing. The assembly preferably contains an electronic display module having an electronic display secured within a mounting frame having a top and bottom surface. Top brackets and bottom brackets may be secured to the mounting frame and then secured to the interior of the housing. A front glass assembly can also be secured to the brackets. In some embodiments the housing may contain interior hangers which correspond to hangers that are fastened to the mounting frame of the electronic display module. | 12-12-2013 |
20140109387 | REMOVABLE TILES FOR ELECTRONIC DISPLAY BACKLIGHTS - Exemplary embodiments include a backlight assembly for an electronic display wherein said backlight assembly is comprised of a plurality of tiles. Each tile has a plurality of lights attached to it, such that when a single light or group of lights fail, the tile may be replaced without having to replace the entire backlight assembly. The lights in the assembly may be any one of the following: light emitting diodes (LED), organic light emitting diodes (OLED), field emitting display (FED), light emitting polymer (LEP), and organic electro-luminescence (OEL). Embodiments also allow tiles to be removed from the rear of the display and dissipate heat from the lights to the rear of the backlight assembly. | 04-24-2014 |
20140111758 | Heat Exchanger for an Electronic Display - A cooling assembly for an electronic image assembly having an open and closed gaseous loop. A closed gaseous loop allows circulating gas to travel across the front surface of an image assembly and through a heat exchanger. An open loop allows ambient gas to pass through the heat exchanger and extract heat from the circulating gas. An optional additional open loop may be used to cool the back portion of the image assembly (optionally a backlight). Ribs may be placed within the optional additional open loop to facilitate the heat transfer to the ambient gas. The cooling assembly can be used with any type of electronic assembly for producing an image. | 04-24-2014 |
20140111942 | THERMAL PLATE WITH OPTIONAL COOLING LOOP IN ELECTRONIC DISPLAY - Disclosed is a thermal plate assembly and method for cooling an electronic display. The thermal plate may contain a first portion which is in thermal communication with the electronic display. A second portion of the thermal plate may be in thermal communication with the housing. Apertures may be placed within the plate and a fan may be positioned to draw air through the apertures. A gap may be located between the electronic display and a transparent plate assembly, where the fan may be further positioned to force air through the gap as well. | 04-24-2014 |
20140113540 | Back Pan Cooling Assembly for Electronic Display - Exemplary embodiments disclosed herein provide a back pan cooling assembly for an electronic display having a rear pan. A cooling back pan is preferably positioned behind the rear pan, the space between the cooling back pan and the rear pan defining a gap. A fan is positioned to cause a flow of ambient air through the gap. An electronic component for driving the electronic display may be placed in conductive thermal communication with the cooling back pan. A rear cover can be placed against the cooling back pan to define a sealed compartment which does not permit ambient air to enter. A port can be provided within the rear cover which allows ambient air to travel between the surroundings, the fan, and the gap. | 04-24-2014 |
20140160788 | NVIS COMPATIBLE BACKLIGHT DEVICE AND LCD USING THE SAME - A backlight device for a liquid crystal display containing a substantially planar light guide with a light emission surface and a light-collecting portion opposing the light emission surface. A pair of opposing side portions may define the periphery of the light guide. A first plurality of LEDs are placed so as to direct the emitted light into the light-collecting portion. An NVIS filter is preferably placed adjacent to at least one of the side portions. A second plurality of LEDs are placed to direct the emitted light through the NVIS filter and into a side portion of the light guide. Alternative embodiments can contain NVIS filters and LEDs along additional edge portions of the light guide. Some embodiments may use directing elements or slanted surfaces of the light guide to direct the light from the second plurality of LEDs into the edge portions of the light guide. | 06-12-2014 |
20140211454 | Lighting System for Transparent Liquid Crystal Display - Exemplary embodiments provide a lighting system for a transparent LCD having opposing vertical edges, the system having a mullion lighting assembly positioned adjacent to each vertical edge of the transparent LCD, each mullion lighting assembly having sidewalls defining a center channel. A plurality of LEDs are positioned along the sidewall of each mullion assembly and on a side of the sidewall that opposes the center channel. The LEDs are preferably placed in conductive thermal communication with the sidewall and preferably have a quantum dot film positioned over each LED. A fan is preferably positioned to draw cooling air through the center channel. | 07-31-2014 |
20140232709 | SYSTEM AND METHOD FOR ENVIRONMENTAL ADAPTATION OF DISPLAY CHARACTERISTICS - A system and method for altering the characteristics of a display based on environmental data is disclosed. Exemplary embodiments provide a light sensor, an environmental processing unit which is adapted to receive electrical signals from the light sensor and generate an environmentally-reactive control signal (S | 08-21-2014 |
20140268657 | Rigid LCD Assembly - Exemplary embodiments disclosed herein provide a rigid LCD assembly including a LCD having a perimeter, a first layer of tape around the perimeter of the LCD, and a diffusing plate attached to the later of tape so as to create a cavity defined by the space between the LCD, tape, and diffusing plate. One or more optical films may be inserted into the cavity, and while constricted in directions perpendicular to the films, the films may be free to move slightly in the directions parallel to the films. A U-shaped backlight wall may attach to the diffusing plate and would contain a backlight. An optional thermal plate can be attached to the backlight wall, which can be used with a second thermal plate to define a channel for accepting cooling air. | 09-18-2014 |
20140313237 | REDUNDANT POWER/CONTROL SYSTEM FOR LIQUID CRYSTAL DISPLAYS - A system for powering and controlling an LED-backlit liquid crystal display (LCD) where redundancy is used to provide two independent paths from a pair of power supplies to the LED backlight. Further, two independent paths are also used from a pair of power supplies to the LCD. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring circuits which can direct another path to be used by the system. Two separate control circuits for the LCD may be used so that either one may be used to control the LCD if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system. | 10-23-2014 |
20140313452 | Glass Assembly on Monitor Array - Exemplary embodiments disclosed herein provide a glass assembly having a bottom sheet of glass which is substantially planar, bonded to a top sheet of glass which is substantially concave. A layer of adhesive is preferably interposed between the bottom and top sheets of glass. In an exemplary embodiment, the amount of adhesive used would be less than the amount required to hold both sheets of glass in a parallel planar arrangement. The layer of adhesive may be contained between the two sheets of glass by a perimeter of adhesive tape, also interposed between the top and bottom sheets of glass. The assembly can be used with an electronic display where the display is positioned adjacent to the top sheet of glass, and due to its concavity, the electronic display can bow towards the top sheet of glass without actually contacting the glass. | 10-23-2014 |
20140313458 | SYSTEM AND METHOD FOR MAINTAINING A CONSISTENT TEMPERATURE GRADIENT ACROSS AN ELECTRONIC DISPLAY - An electronic display which can be mounted above a paved surface in an outdoor environment. A surface or plate is placed behind the electronic display to define a gap where cooling air can be drawn through said gap in order to cool the electronic display. A plurality of ribs may be placed within the gap and in thermal communication with the electronic display. The density of the ribs may be varied according to the inlet and exhaust openings for the cooling air. The ribs may be placed at a higher density near the exhaust to account for the increase in temperature of the cooling air as it travels through the gap. | 10-23-2014 |
20140313698 | Cooling Assembly for an Electronic Display - The exemplary embodiments herein provide a system for cooling an electronic display where a plate is positioned behind the electronic display, the space between the plate and the electronic display defining a first channel. A first fan is preferably positioned to force a first flow of external air through the first channel. A heat exchanger is preferably positioned adjacent to the plate where the space between the heat exchanger and the plate defines a second channel; and a second fan is preferably positioned to force a second flow of external air through the second channel and through the heat exchanger. A continuous heat sink may be placed within the first channel. Pass through gaskets may be used to ensure the external air may cross paths with the circulating gas without permitted the external air and circulating gas to mix. | 10-23-2014 |
20140314395 | Heat Exchanger Assembly for an Electronic Display - The exemplary embodiments disclosed herein provide a heat exchanger assembly for cooling power module bricks, having a plurality of heat exchanger layers where a top layer is in conductive thermal communication with the power module brick. A series of metallic plates are preferably positioned within each heat exchanger layer and are preferably aligned with the power module brick. A circulating fan may be positioned to force circulating gas across the power module brick and through the heat exchanger. An external air fan may be positioned to force external air through the heat exchanger. Pass through junctions may be positioned near edges of the heat exchanger to permit the circulating gas to cross paths with the external air without allowing the two gas flows to mix with one another. | 10-23-2014 |
20140321103 | Expanded Heat Sink for Electronic Displays - A system for cooling various components of an electronic display. One or more heat-generating components are preferably placed in thermal communication with a plate and ribs. One or more fans are placed to draw cooling air along the ribs to remove the heat removed from the component. Some embodiments may place the electronic image assembly in thermal communication with the ribs to remove heat from the electronic image assembly. Exemplary embodiments have power modules and the electronic image assembly in thermal communication with the ribs. Conductive thermal communication is established between the ribs and the components in the exemplary embodiments. | 10-30-2014 |
20140340375 | BACKLIGHT ADJUSTMENT SYSTEM - A preferred embodiment relates to controlling the amount of backlight power in an electronic display to account for the temperature in the backlight cavity. Another embodiment relates to a system for controlling the amount of backlight based on both the temperature of the backlight and the amount of ambient light. | 11-20-2014 |
20140345834 | SYSTEM FOR THERMALLY CONTROLLING AN ELECTRONIC DISPLAY WITH REDUCED NOISE EMISSIONS - A heat exchanger assembly for an electronic image assembly placed within a housing where ambient air surrounds the exterior of the housing and a rear plate may be placed behind a backlight to create a channel. An ambient air fan may be placed between two portions of a heat exchanger to force ambient air through the heat exchanger. The fan may also be positioned to also force ambient air through the channel. A circulating gas fan may also be placed within the housing to force circulating gas through at least one portion of the heat exchanger. | 11-27-2014 |
20140361969 | DYNAMIC DIMMING LED BACKLIGHT - Disclosed herein is a system for controlling the interactions of light between adjacent subsections of a dynamic LED backlight. Preferred embodiments contain a dividing wall positioned between each adjacent subsection of the LED backlight. The dividing wall may be in contact with the LED backlight and extend away from the LED backlight. The dividing wall may prohibit light from a first subsection from entering an adjacent second subsection at its full luminance. The luminance for each adjacent subsection may be approximately half of the full luminance of each subsection, when measured at the location of the dividing wall. | 12-11-2014 |
20140369003 | SYSTEM FOR COOLING AN ELECTRONIC IMAGE ASSEMBLY WITH A HEAT EXCHANGER HAVING INTERNAL FANS - A system for cooling an electronic image assembly using a heat exchanger with an internal fan assembly. Circulating gas may also be used to cool a front portion of the electronic image assembly or any other internal cavity of the electronic display housing. The circulating gas may be drawn through a heat exchanger so that heat may be transferred to an ambient gas. The heat exchanger may have an internal fan assembly for drawing ambient air through the heat exchanger and exhausting it out of the display housing. The heat exchanger may be divided into two portions so that the fan assembly is placed between the two portions. | 12-18-2014 |
20150022967 | System for Using Constricted Convection with Closed Loop Cooling System As the Convection Plate - A gas cooling system for an electronic display is disclosed herein. A closed loop of circulating gas is preferably positioned to surround the electronic display. An open loop of cooling air preferably travels along the rear surface of the electronic display. In an exemplary embodiment the cooling air does not mix with the circulating gas. Heat may be transferred from the circulating gas to the cooling air in order to cool the display. | 01-22-2015 |
20150055054 | Constricted Convection Cooling System for an Electronic Display - Preferred embodiments provide a cooling system for an electronic display. A constricted convection plate is used to force cooling air against a posterior surface of the electronic display. Fans may be used to propel or pull air between the constricted convection plate and the rear surface of an electronic display. A refrigeration unit or thermoelectric module may be employed to cool or heat the air traveling through the constricted convection channel. Some embodiments include a closed loop which extracts heat (or adds heat) to the front display surface. | 02-26-2015 |