| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315228000 | Plural load device systems | 40 |
| 20090091267 | BACKLIGHT ASSEMBLY AND A DISPLAY DEVICE HAVING THE SAME - A backlight assembly includes: a plurality of lamp units; and an inverter which includes a plurality of pattern capacitors, wherein each of the pattern capacitors is electrically connected to a respective one of the plurality of lamp units, wherein each of the pattern capacitors comprises a printed circuit board, and a conductive layer formed on one side of the printed circuit board, and at least one of the plurality of pattern capacitors has a different electric capacity than another of the pattern capacitors. | 04-09-2009 |
| 20100060182 | Lighting source with low total harmonic distortion - A low THD lighting system is disclosed. The lighting system includes a first lighting module and a second lighting module connected parallel to the first lighting module. During each AC cycle the first lighting module conducts current for a first portion of the cycle and the second lighting module conducts current for a second portion of the cycle. When combined, the total current drawn from the power source substantially tracks the shape of the applied AC voltage. Accordingly, there is minimal distortion, and low total harmonic distortion level is achieved. | 03-11-2010 |
| 20100327762 | Lighting device with optical pulsation suppression by polyphase-driven electric energy - The present invention relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common electric energy-driven luminous body; or to separately drive proximately installed individual electric energy-driven luminous bodies so that the pulsation of the outwardly projected light is reduced. | 12-30-2010 |
| 20110031890 | LED EMULATION OF INCANDESCENT BULB BRIGHTNESS AND COLOR RESPONSE TO VARYING POWER INPUT AND DIMMER CIRCUIT THEREFOR - A lighting system is disclosed. The lighting system includes a first lighting module and a second lighting module connected parallel to the first lighting module. The first lighting module generates light at a first color temperature and the second lighting module generates light at a second color temperature. The first lighting module has a first activation voltage and the second lighting module has a second activation voltage. The two lighting modules generate light when the current flow through them. When input voltage is changed, not only does the amount of current flowing through the two modules change, but also ratio of the amount of current flowing through the two lighting modules changes. The change in the ratio changes the color temperature of the light produced by the lighting system which is a combination of the light produced by the two modules. | 02-10-2011 |
| 20110279049 | DISPLAY DEVICE WITH COMPENSATION FOR VARIATIONS IN PIXEL TRANSISTORS MOBILITY - In order to efficiently execute threshold value compensation for a driving transistor, a coupling capacitor has one end connected to a data line. Another end of the coupling capacitor is connected to a selection transistor and one end of a reset transistor. A control terminal of a driving transistor is connected to the other end of the selection transistor, and an organic EL element is connected to this driving transistor via a light emission control transistor. A data voltage, corresponding to a gradation signal supplied to the data line, is written to a storage capacitor via the coupling capacitor, and with the selection transistor and the light emission control transistor in an off state and the reset transistor turned on, a compensation voltage corresponding to a degree of mobility of the driving transistor is written to the coupling capacitor. | 11-17-2011 |
| 20110279050 | LIGHTING DEVICE FOR DISPLAY DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER - A lighting device | 11-17-2011 |
| 20110279051 | LIGHTING DEVICE FOR DISPLAY DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER - A lighting device for a display device includes: a plurality of discharge tubes | 11-17-2011 |
| 20120056550 | DISPLAY DEVICE - The invention provides an active matrix EL display device which can perform a clear multi-gray scale color display. In particular, the invention provides a large active matrix EL display device at low cost by a manufacturing method which can selectively form a pattern. Power supply lines in a pixel portion are arranged in matrix by the manufacturing method which can selectively form a pattern. Further, capacitance between wirings is reduced by providing a longer distance between adjacent wirings by the manufacturing method which can selectively form a pattern. | 03-08-2012 |
| 20120104962 | Flash LED Controller - The invention provides integrated power supplies, circuit drivers, and control methods for relatively high-current drivers, usable with common battery power sources. Preferred embodiments include one or more high series resistance super-capacitors electrically connected with a power. A low resistance driver circuit regulates power supplied from the super-capacitors to the load. | 05-03-2012 |
| 20120119667 | ELECTRO-OPTICAL DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING ELECTRO-OPTICAL DEVICE - An electro-optical device includes a first pixel circuit which is disposed so as to correspond to each intersection between a scanning line and a first data line, a second pixel circuit which is disposed so as to correspond to each intersection between a scanning line and a second data line, a signal line, a selection section, a driving circuit. In a first selection period, the selection section is operated such that the first data line and the second data line are electrically connected to the signal line. In the second selection period, the selection section is operated such that the second data line is electrically connected to the signal line. In a writing period, the first data potential is supplied to the first pixel circuit and the second data potential is supplied to the second pixel circuit. | 05-17-2012 |
| 20120262083 | LIGHTING BATTERY - A lighting battery relates to a cylindrical rechargeable battery. The lighting battery comprises a battery body, a driving circuit, a switch and light-emitting diodes, wherein the switch is an inching switch, and the driving circuit has a trigger pin which is connected to the switch whereby a trigger signal is acquired to control the driving circuit operate or stop. The power pin and grounding pin of the driving circuit is respectively connected to the positive pole and the negative pole of the battery body, as well as the output pin of the driving circuit is connected to the light-emitting diodes. | 10-18-2012 |
| 20120286688 | Energy Conserving Solar or Other Powered Retractable Landscape Light - The current inventive technology relates to methods and apparatus for a providing an energy efficient and durable landscape lamp. The lamp can retract when not in use to prevent damage. The high efficiency retractable landscape lamp of this invention may be powered by conventional distributed low voltage or by a solar photovoltaic (PV) source. In some embodiments the lamp may be powered by low voltage, it may be individually interchangeable with a conventional low voltage landscape lamp or may be installed in a low voltage lighting complete system. This lamp may house the electrical components and gearmotor in an upper dry compartment making it reliable in outdoor installations, even in wet environments. This invention can also relate to operation without the need for unreliable limit switches for the raising and lowering of the lamp. | 11-15-2012 |
| 20130002163 | Input Voltage Sensing For A Switching Power Converter And A Triac-Based Dimmer - An electronic lighting system and method described herein control energy provided to an electronic lighting device, such as one or more light-emitting diodes (LEDs) and/or compact fluorescent lamps (CELs), of the electronic lighting system. A triac-based dimmer phase cuts a line voltage provided to the electronic lighting system. A controller of the electronic lighting system utilizes a probing system to overcome idiosyncrasies of the triac-based dimmer to allow the controller to probe and sense the line voltage. To reduce energy consumption, rather than probing each cycle of the output voltage of the triac-based dimmer, the controller periodically or intermittently probes the output voltage of the triac-based dimmer. | 01-03-2013 |
| 20130069556 | LIGHT-EMITTING ELEMENY DRIVER CIRCUIT - A light-emitting element driver circuit is disclosed in embodiment of the invention. The light-emitting element driver circuit includes a driver unit for generating a driving current to the light-emitting element; a data storage unit for storing a threshold voltage of the driver unit and current data signal voltage; and a control unit being controlled to be conducted during a light emitting period so that the driver unit generates a driving current in response to the threshold voltage and current data signal voltage stored in the data storage unit. | 03-21-2013 |
| 20130127363 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes an anode electrode provided for each pixel, an opening insulation film which covers the periphery of the anode electrode and which defines an pixel opening, and a storage capacitor disposed below the anode electrode through a planarizing insulation film, having a function to store charge for driving a pixel, and including capacitor electrodes wider than the pixel opening. | 05-23-2013 |
| 20130175942 | VOLTAGE MULTIPLIER CIRCUIT - A multiplier circuit for a voltage Vdc applied to a first input of the circuit, comprising:
| 07-11-2013 |
| 20130207566 | LED FLASH MODULE, LED MODULE, AND IMAGING DEVICE - An LED flash module includes: a module substrate; an energy device disposed on the module substrate; an LED module arranged on the module substrate includes a plurality of LED blocks arranged in a first direction, each LED block including a plurality of LED elements which is arranged in a second direction perpendicular to the first direction and emits light with power supplied from the energy device; a charger circuit arranged on the module substrate to charge the energy device; and a control circuit arranged on the module substrate to control emission of LED elements. A wiring length from one of the LED elements to a plus terminal of a power supply portion supplying power to each of the LED elements and a wiring length from the one of the LED elements to a minus terminal of the power supply portion is substantially the same for all of the LED elements. | 08-15-2013 |
| 20130342128 | SYSTEM AND METHOD FOR EMULATING A GAS DISCHARGE LAMP - A system and method for emulating a gas discharge lamp comprising an input arranged to direct electric current from a lamp ballast to a delay circuit, wherein the delay circuit is arranged to establish an electrical communication between the lamp ballast and an electric lamp when a predetermined condition associated with one or more characteristics of the gas discharge lamp is attained. | 12-26-2013 |
| 20140015435 | LOW-TEMPERATURE LED LIGHTING AND POWER SUPPLY DEVICE - A low-temperature LED lighting and power supply device has a low power-consuming power supply control module and an LED lighting module electrically connected therewith. The LED lighting module is composed of at least one light source driver and an LED light source. The low power-consuming power supply control module at least has a surge suppression unit, a voltage-dividing-limiting unit, a current-limiting unit, and a steady voltage filtering unit. Accordingly, the present invention allows LED lighting equipment to be applied in a wider power supply range and operated under a low-temperature and low power-consuming state so as to meet economic and practical demands and environmental protection. | 01-16-2014 |
| 20140055055 | POWER CONVERSION WITH CONTROLLED CAPACITANCE CHARGING INCLUDING ATTACH STATE CONTROL - An electronic system includes a controller that actively controls a rate of charging and discharging of an energy storage capacitor to maintain compatibility with a dimmer. The controller actively controls charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit. The controller further allows the capacitor to discharge to obtain a second voltage level across the capacitor circuit. The second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting. The first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage. | 02-27-2014 |
| 20140062332 | POWER SUPPLY DEVICE FOR LED AND LIGHT EMITTING DEVICE HAVING THE SAME - Disclosed is a power supply device including a wired controller receiving AC power to generate a driving voltage, and outputting a lighting driving signal, a wireless controller wirelessly receiving a lighting control signal and outputting the lighting control signal to the wired controller, and a standby power supply unit receiving a reference standby voltage based on the driving voltage, storing the reference standby voltage, and supplying the reference standby voltage to the wireless controller as standby power. In the lighting control device based on wired/wireless communication, the power is always obtained from the super capacitor to turn on the wireless controller, so that the turn-on state of the power generator of the wired controller is not always required. The power consumption is reduced by reducing the standby power. | 03-06-2014 |
| 20140084805 | Pixel Circuit and Method for Driving Thereof, and Organic Light Emitting Display Device Using the Same - Disclosed is a pixel circuit which facilitates to compensate a threshold voltage of a driving transistor for controlling an operation state of a light emitting device, and a method for driving thereof and an organic light emitting display device using the same, wherein the pixel circuit includes a light emitting device including an organic light emitting cell; a driving transistor which controls an operation of the light emitting device according to a voltage applied between gate and source terminals; a capacitor including first and second terminals; a switching unit which initializes the capacitor during a current horizontal period, stores a sampling voltage in the capacitor, and makes the light emitting device emit light on the basis of the sampling voltage stored in the capacitor whenever the data voltage and reference voltage are supplied to the data line after the current horizontal period. | 03-27-2014 |
| 20140132175 | LIGHT-EMITTING ELEMENT, DISPLAY DEVICE AND ELECTRONIC APPARATUS - A light-emitting element includes a light-emitting section and a driving circuit that drives the light-emitting section. The driving circuit includes at least (A) a drive transistor that is a p-channel field effect transistor, (B) an image-signal writing transistor that is a p-channel field effect transistor, (C) a light-emission control transistor that is a p-channel field effect transistor, and (D) a capacitor. Each of the drive transistor, image-signal writing transistor, and light-emission control transistor is provided in an n-type well formed in a p-type silicon semiconductor substrate. A first source/drain region of the drive transistor is electrically connected to the n-type well in which the drive transistor is formed. | 05-15-2014 |
| 20140152190 | PIXEL UNIT DRIVING CIRCUIT, PIXEL UNIT AND DISPLAY DEVICE - A pixel unit driving circuit, a pixel unit and a display device, wherein said pixel unit driving circuit of the pixel unit comprises a switching unit ( | 06-05-2014 |
| 20140159609 | PIXLE UNIT DRIVING CIRCUIT, METHOD FOR DRIVING THE PIXEL UNIT DRIVING CIRCUIT AND DISPLAY DEVICE - The present invention provides a pixel unit driving circuit, a driving method and a display device. Wherein, the circuit comprises four TFT transistors and two capacitors. The display process is divided into three processes, which are a pre-charging phase, a compensation phase and a display phase. As compared with the conventional pixel structure, the nonuniformity and the shift of the threshold voltage of the depleted TFT or the enhanced TFT driving transistor, and the nonuniformity of the OLED voltage may be effectively compensated. | 06-12-2014 |
| 20150008841 | SENSING CIRCUIT FOR EXTERNAL COMPENSATION, SENSING METHOD THEREOF AND DISPLAY APPARATUS - A sensing circuit for external compensation, a sensing method thereof and a display apparatus, the sensing circuit for external compensation comprises a differential amplifier ( | 01-08-2015 |
| 20150069928 | SWITCHED CAPACITOR POWER CONVERTER - A switched capacitor power converter comprising a set of at least two capacitors; an input for receiving an input voltage an output for outputting an output voltage different to the input voltage, a plurality of switches configured to arrange the set of capacitors into a plurality of different subcircuit arrangements between the input and output for converting the input voltage to the output voltage; wherein the set of capacitors is configured to adopt a first subcircuit arrangement in which the set is connected to the input, a second subcircuit arrangement different to the first subcircuit arrangement and a third subcircuit arrangement, different to the first and second arrangements, in which the set is connected to the output, the subcircuit arrangements configured such that each of the capacitors in the set acts as a floating capacitor. | 03-12-2015 |
| 20150102744 | LED FLASH MODULE, LED MODULE, AND IMAGING DEVICE - The LED flash module includes: a module substrate ( | 04-16-2015 |
| 20150108916 | DEVICES AND METHODS FOR REDUCING POWER CONSUMPTION AND SIZE OF GATE DRIVERS - One gate driver includes an output node configured to be coupled to a gate line and to provide power to the gate line for driving thin-film transistor (TFT) gates of a display. An input node of the gate driver is configured to receive an input signal. The gate driver includes a first field-effect transistor (FET) having a gate, a drain, and a source. The drain may be coupled to the input node and the source may be coupled to the output node. The gate driver also includes a second FET having a gate, a drain, and a source. The drain may be coupled to the input node. The gate driver includes a capacitor having a first end coupled to the gates of the FETs and a second end coupled to the source of the second FET. Using the gate driver power consumption of the display may be reduced. | 04-23-2015 |
| 20150123557 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - An organic light emitting display device includes a display panel including data lines, scan lines, initialization lines, and a plurality of pixels, wherein a pixel of the pixels includes: a driving transistor including a gate electrode coupled to a first node, a first electrode coupled to a second node, and a second electrode coupled to a third node, the driving transistor configured to control an amount of a drain-to-source current of the driving transistor according to a voltage applied to the first node; an organic light emitting diode configured to emit light depending on the drain-to-source current of the driving transistor; a first transistor coupled between the second node and a data line of the data lines, the first transistor configured to be turned on by a scan signal applied to a scan line of the scan lines; a second transistor configured to initialize the first node by being turned on; and a first capacitor coupled between the first electrode and the second electrode of the second transistor. | 05-07-2015 |
| 20160081153 | POWERING INTERNAL COMPONENTS OF LED LAMPS USING DISSIPATIVE SOURCES - An LED lamp comprises one or more LEDs and an LED driver receiving an input signal from a dimmer switch indicative of an amount of dimming for the LED lamp. The LED driver controls regulated current through the one or more LEDs based on the input signal such that an output light intensity of the one or more LEDs substantially corresponds to the amount of dimming for the LED lamp. A regulated output provides operating power for the LED driver. A controller regulates the regulated output to power the LED driver. The controller selects a power source for charging the regulated output from two or more power sources, and the regulated output is charged using the power source selected by the controller. | 03-17-2016 |
| 20160192449 | LIGHTING DEVICE, LUMINAIRE USING LIGHTING DEVICE, AND LIGHTING SYSTEM USING LUMINAIRE - A lighting device includes at least first and second lighting circuits configured to receive electric power from a single common DC power supply. First lighting circuit includes a first output capacitor connected between output ends thereof, and a first pre-charge circuit configured to keep a voltage across first output capacitor at a first voltage for first lighting circuit, while a first light source is in OFF state. Second lighting circuit includes a second output capacitor connected between output ends thereof, and a second pre-charge circuit configured to keep a voltage across second output capacitor at a second voltage for second lighting circuit, while a second light source is in OFF state. First and second voltages are set such that a difference between a forward voltage of first light source and the first voltage agrees with a difference between a forward voltage of second light source and the second voltage. | 06-30-2016 |
| 315232000 | Condenser in shunt to load and supply | 8 |
| 20110260636 | LED LAMP - The invention relates to light sources having an ultra-low active-energy consumption. The LED lamp of the present invention includes a voltage down-converter ( | 10-27-2011 |
| 20120056551 | HIGH POWER-FACTOR CONTROL CIRCUIT AND METHOD FOR SWITCHED MODE POWER SUPPLY - A switch mode power supply (SMPS) system includes a rectifying circuit for coupling to an AC input voltage and a transformer having a primary winding for coupling to the rectifying circuit and a secondary winding coupled to the primary winding. The system also has a power switch coupled to the primary winding and a control circuit coupled to the power switch. The control circuit is configured to control current flow in the primary winding such that an envelop waveform formed by peak points of current pulses are in phase with the magnitude of the AC input voltage. Moreover, the SMPS system is configured to provide a constant average output current. | 03-08-2012 |
| 20120223652 | LIGHT EMITTING DIODE CIRCUITS FOR GENERAL LIGHTING - Improved circuits minimize, or eliminate, energy losses in LED lighting. Diodes and a capacitor reduce or eliminate blinking and create smooth and continuous infinitely variable dimming. The components supply power to each LED during the half of the AC cycle where it would normally be turned off. Added diodes allow an added capacitor to charge during the half cycle that the original diode is turned on, but does not allow the other half cycle to discharge the added capacitor. When the added capacitor is charged enough to turn on the original diode, it stays on throughout the AC cycle. Zener diodes protect the LEDs from voltage surge's/spikes by shunting current around LEDs when the voltage exceeds the Zener diode's breakdown voltage. A microprocessor controller with MOSFETs provides an ultra efficient embodiment with near zero power dissipation. | 09-06-2012 |
| 20130063040 | LIGHT-EMITTING COMPONENT DRIVING CIRCUIT AND RELATED PIXEL CIRCUIT AND APPLICATIONS - A pixel circuit related to an organic light-emitting diode (OLED) is provided. When signals having appropriate operating waveforms are supplied, the circuit configuration (6T1C) of the pixel circuit keeps a current flowing through an OLED unchanged when the Vth shift of the TFT for driving the OLED changes and eases the impact of a power supply voltage Vdd on the current. Thereby, the luminance uniformity of an OLED display adopting the OLED pixel circuit is greatly improved. | 03-14-2013 |
| 20130069557 | LED Lighting Circuit and LED Luminaire - According to one embodiment, an LED lighting circuit includes a lighting circuit provided between an external power supply and LED elements and a control circuit that controls the lighting circuit. The lighting circuit includes an electrolytic capacitor, the capacitance of which decreases to be lower than a rated value or the impedance of which increases to be higher than a rated value at temperature equal to or lower than −20° C. The control circuit performs an initial lighting operation under a temperature environment equal to or lower than −20° C. | 03-21-2013 |
| 20140042925 | PFC LED DRIVER CAPABLE OF REDUCING CURRENT RIPPLE - A PFC LED driver capable of reducing current ripple, comprising: a current source unit, having a control terminal coupled to a control voltage, which is a ratio of a full-wave rectified line input voltage, a first channel terminal coupled to a power line, and a second channel terminal used to generate an output current according to the control voltage; and at least one LED load unit, being in series with the current source unit, wherein each of the at least one LED load unit comprises: a first load, including a first parallel combination of an LED module and a capacitor, wherein the LED module has at least one light emitting diode; a diode, being in a first series combination with the first load; and a switch, being in a second parallel combination with the second series combination. | 02-13-2014 |
| 20140333225 | LIGHT EMITTING DEVICE AND SYSTEM - Devices comprise first and second terminals ( | 11-13-2014 |
| 20160119985 | LIGHTING APPARATUS - Disclosed is a lighting apparatus which includes LEDs and reduces flicker. The lighting apparatus may secure a charge voltage by performing a charge operation using a current corresponding to a rectified voltage equal to or more than a preset level, and compensate for the rectified voltage provided to a lighting unit including LED groups by performing a discharge operation for the charge voltage in response to the rectified voltage less than the preset level, thereby reducing flicker. | 04-28-2016 |
