| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 362603000 | Front light | 32 |
| 20080198620 | Backlit Communication Display - Communication display comprises a light source for backlighting an advertising spot or similar, arranged on a support. The light source comprises a web of optical fibres arranged facing the back of the support and adapted for emitting light laterally. Optical fibres present on at last one edge of the web are assembled in a plurality of bundles, each bundle being equipped at its free end with an assembling ring for securing each of the fibres with regard to others of the same bundle. The light source also includes a plurality of point sources facing at least one edge of the web of optical fibres, and convergent optical systems arranged facing each point source for uniformly collimating light rays emitted by the point sources towards the optical fibres. The convergent optical systems are arranged in a ball joint connection with centering supports and members for aligning the assembling rings. | 08-21-2008 |
| 20080298083 | ELECTRONIC READING DEVICES - The invention relates to electronic devices, in particular consumer electronic devices, including an electrophoactive display, as well as to electronic document reading devices, sometimes called e-readers, such as electronic books. We describe an electronic device including an electroactive display and a light to illuminate said display, wherein said display has a viewing surface, and wherein said light is configured to illuminate said display from in front and to one side of an edge of said viewing surface, across said viewing surface and through a front-most surface of said display. | 12-04-2008 |
| 20090059618 | LIGHTGUIDE PLATE AND ELECTRONIC DEVICE - An electronic device includes a casing having a display part ( | 03-05-2009 |
| 20120069596 | Front lit alterable display - A tab is cut into a sheet of transparent material. The tab has a free end and a fixed end. A source of light is attached to the tab and the tab and the sheet are displaced along the z-axis of the sheet to direct light from the source into an edge of the sheet. The tab can include conductive traces for electrical connection to the light source or other electrical devices on the sheet. A variable display device adjacent the sheet is viewed through the sheet and the sheet with attached light source provides front lighting for the variable display device. | 03-22-2012 |
| 20120140515 | Methods, Systems, and Products for Illuminating Displays - Methods, systems, and products illuminate display devices. Light is injected into a waveguide and directed onto an array of picture elements. The light reflects from the array of picture elements through the waveguide, thus illuminating the array of picture elements. | 06-07-2012 |
| 20120170308 | ADJUSTABLE ILLUMINATION DEVICES - To improve the illumination efficiency of hand-held illumination devices, this invention proposes a new illumination device having the “rolling” function, which is capable of illuminating the target area on which a user is currently focusing and rolling the illuminated area as the user is reading forward or backward. The illumination device comprises two pluralities of lighting elements, an illuminating body and a controller. The controller can control one plurality of lighting elements to emit light to illuminate a part of the illuminating body, which can further deflect the light to a part of the surface of the target. | 07-05-2012 |
| 20120257409 | FRONT LIGHT MODULE AND DISPLAY DEVICE USING THE SAME - A front light module, including: a light source; a light guide plate, having a first refractive index and having a side face close to the light source; and a plurality of pillar structures, having a second refractive index and being placed under the light guide plate, and the second refractive index is larger than or equal to the first refractive index. | 10-11-2012 |
| 20120281430 | FRONT LIGHT MODULE - A front light module, including: a light source; a light guide plate, having a first refractive index and having a side face neighboring the light source; a medium layer, placed over the light guide plate and having a second refractive index, wherein the second refractive index is smaller than the first refractive index; a transparent material layer, placed over the medium layer; and a transparent glue layer, placed under the light guide plate and having a third refractive index, wherein the third refractive index is larger than the refractive index of air and smaller than or equal to the first refractive index. | 11-08-2012 |
| 20120281431 | SUPER SLIM FRONT LIGHT MODULE AND ELECTRONIC PAPER DISPLAY - A super slim front light module, including: a point light source; a diffusion strip, having a plurality of diffusion points and having a side surface neighboring the point light source; a rectangular reflective cover, used for covering the diffusion strip; and a light guide plate, having a side surface neighboring the diffusion strip. | 11-08-2012 |
| 20130063967 | REFLECTIVE TOUCH DISPLAY AND FABRICATION METHOD THEREOF - The present disclosure relates to a display device, and more particularly to a reflective touch display and a fabrication method thereof The reflective touch display comprises a reflective display device, a first bonding layer, a light guiding plate, a second bonding layer, and a touch screen. The light guiding plate is laminated to top surface of the reflective display through the first bonding layer. The touch screen is laminated to top surface of the light guiding plate through the second bonding layer. The first bonding layer and the second bonding layer are formed by a liquid bonding material that transforms from a liquid state to a solid state, wherein refraction index of each of the first and second bonding layer is less than that of the light guiding plate. In accordance with the present disclosure, yield rate can be increased and production cost can be reduced. | 03-14-2013 |
| 20130063968 | PLANAR FRONT ILLUMINATION SYSTEM HAVING A LIGHT GUIDE WITH MICRO SCATTERING FEATURES FORMED THEREON AND METHOD OF MANUFACTURING THE SAME - A system for illuminating a reflective display or other material from a planar front device and a method of manufacture thereof. The system includes a light guide plate that conducts light from an edge light source across the face of a reflective display. Micro scattering features are formed on an outer surface of the light guide, farthest from the reflective display or material. A stepped index layer is formed on the surface of light guide plate containing the micro scattering features. The stepped index layer has an index of refraction lower than an index of refraction of the light guide plate to assist in the total internal reflection of light injected into the light guide plate. The micro scattering features, light reflecting areas, redirect luminous flux toward the display. In one embodiment, the micro scattering features are formed as white dots on the light guide plate. A black absorbing layer can be added to each white scattering dot in order to improve the apparent contrast when the front light is deactivated. | 03-14-2013 |
| 20130063969 | PLANAR FRONT ILLUMINATION SYSTEM HAVING A LIGHT GUIDE WITH MICRO LENSES FORMED THEREON AND METHOD OF MANUFACTURING THE SAME - A system for illuminating a reflective display or other material from a planar front device and a method of manufacture thereof. The system includes a light guide plate that conducts light from an edge light source across the face of a reflective display. Micro lenses are formed on the inner or outer surface of the light guide and direct the light conducted in the light guide toward the display. A stepped index layer is formed on the surface of light guide plate containing the micro lenses. The stepped index layer has an index of refraction lower than an index of refraction of the light guide plate to assist in the total internal reflection of light injected into the light guide plate. A top layer protective coat or touch screen can be laminated to the outside of the light guide plate. | 03-14-2013 |
| 20130100696 | Surface Light Source - The invention relates to a surface light source with a lighting surface that includes at least one semiconductor body that emits electromagnetic radiation from its front side during operation. Decoupling structures are suitable for producing a local variation of the light density on the lighting surface, so that the light density is increased in at least one illumination area with respect to a background area. | 04-25-2013 |
| 20130121019 | Frontlight unit for reflective displays - The frontlight unit is intended for enhancing illumination of a reflective display having pixels arranged in a matrix pattern and using monochromatic laser lights as light sources. The unit contains a network of light-distribution planar ridge waveguides with holograms arranged in a matrix pattern that corresponds to the matrix pattern of the reflective display when it is applied onto this display and emits light in the downward direction in the form of diverging beams that fall onto the pixels of the reflective display and in the upward direction onto mirrors wherefrom light is reflected also in the form of diverging beams onto the reflective display. Thus, all of the light reflected from the holograms of the light-distribution planar ridge waveguides is not lost and is used entirely for illumination of the reflective display. The mirrors occupy no more than 5% of the display surface area. | 05-16-2013 |
| 20130128607 | Methods, Systems, and Products for Illuminating Displays - Methods, systems, and products illuminate display devices. Light is injected into a tapered portion of a waveguide. The tapered portion reflects the light to create total internal reflectance in the waveguide. The light in the waveguide is frustrated and frustrated light is directed onto an array of picture elements. The frustrated light illuminates the array of picture elements. | 05-23-2013 |
| 20130201719 | FRONT LIGHT MODULE - A front light module includes a light source and a light-guiding plate. The light-guiding plate is disposed outside a panel. The light-guiding plate receives the light emitted by the light source and reflects the light onto the panel. The light-guiding plate includes a first reflecting surface facing the panel and a second reflecting surface opposite to the first reflecting surface. An included angle is formed between the panel and the first reflecting surface or the second reflecting surface. The front light module can reflect the light onto the panel uniformly to generate sufficient brightness. | 08-08-2013 |
| 20130208500 | REFLECTIVE COLOR DISPLAY WITH BACKLIGHTING - A reflective color pixel has a top surface for receiving ambient light for front lighting, a plurality of sub-pixels including a first sub-pixel, and a waveguide disposed underneath the sub-pixels for transmitting light for backlighting to the sub-pixels. The first sub-pixel includes a first luminescent material configured to absorb either the ambient light or the light for backlighting and generate light of a first color. | 08-15-2013 |
| 20130215639 | Light Guide Device, Front-Light Module And Reflective Display Apparatus - A light guide device includes a main body, a first surface, and a plurality of cloud form microstructures. The plurality of cloud form microstructures is disposed on the first surface. Each of the cloud form microstructures has an outer contour which is consisted of at least three connecting points and a plurality of curved lines formed by connecting adjacent connecting points. Each the cloud form microstructure is defined with a maximum length (L), a maximum width (W) perpendicular to the maximum length, and a maximum height (H) perpendicular to both the maximum length and the maximum width; wherein, the ratio of L to W is between 1:1 and 5:1, and the ratio of L to H is between 2.5:1 and 36:1. | 08-22-2013 |
| 20130258705 | FRONT-LIGHT MODULE AND LIGHT SOURCE MODULATION APPARATUS THEREOF - A front-light module includes at least one point light source, a light source modulation apparatus and a light guide plate. The light source modulation apparatus includes a body and a plurality of uniform illumination microstructures. The body includes a light incident surface and a light emission surface. The point light source is disposed beside the light incident surface, and the light emission surface is opposite to the light incident surface. The uniform illumination microstructures are disposed on the light emission surface of the body. Each uniform illumination microstructure is arc-shaped. | 10-03-2013 |
| 20130272020 | FRONT PLATE OF TN LIQUID CRYSTAL DISPLAY DEVICE - The problem is to provide a front plate of a TN liquid crystal display device capable of reducing occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when the liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency. | 10-17-2013 |
| 20130308336 | FLAT AND THIN LED-BASED LUMINAIRE - A light emitting device is provided, comprising a light guide plate ( | 11-21-2013 |
| 20130314942 | PACKAGING COMPRISING A LIGHTGUIDE - A packaging includes a film-based lightguide wherein incident light propagates through the lightguide to a light emitting region where the light is emitted. In one embodiment, a packaging includes a lightguide defining a lightguide region. An array of coupling lightguides are continuous with the lightguide region. Each coupling lightguide terminates in an edge and each coupling lightguide is folded such that the edges of the array of coupling lightguides form a stack defining a light input surface. Alight emitting region is defined within the lightguide region by at least one light extraction feature. A method of making or producing a packaging is also disclosed. | 11-28-2013 |
| 20130322111 | SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - An angular intensity distribution shaping member includes a first surface for receiving a light beam emitted from a light source, the first surface having a length in a width direction that is longer than that in a thickness direction; second surfaces forming a plate-shaped light path on which the light beam incident from the first surface propagates by total reflection, the second surfaces including at least one adjustment surface for spreading a full angle of an angular intensity distribution, in the width direction, of the light beam incident from the first surface so that the full angle becomes wider than that of the angular intensity distribution of the light beam just after emission from the light source; and a third surface through which the light beam exits, the full angle of its angular intensity distribution in the width direction having been widened by the at least one adjustment surface. | 12-05-2013 |
| 20140003086 | FRONT-LIT REFLECTIVE DISPLAY DEVICE | 01-02-2014 |
| 20140022812 | DISPLAY FRONT LIGHTING DEVICE - A display front lighting device comprises an optically transmissive sheet member that provides reflective means to evenly distribute light for the illumination of the text and/or graphics of display modules while permitting the text and/or graphics to visibly pass through the sheet member for viewing. The transmissive sheet member has LEDs offset mounted at an angle relative to one side of the sheet member such that a portion of the light emitted by the LEDs is reflected by the one side onto the adjacent dis play. The LEDs are mounted on a flexible printed circuit board, or alternatively on the conductive traces bonded to the sheet member. | 01-23-2014 |
| 20140063841 | FRONT LIGHT MODULE - A front light module is installed in front of a panel, and the front light module includes a light source, a light guide plate and an intermediate layer disposed on an external side of the panel, and the light guide plate is provided for receiving a light emitted from the light source and reflecting and refracting the light onto the panel, and the light guide plate has a plurality of microstructures disposed on at least one side parallel to the panel, and the intermediate layer is filled and distributed in the microstructures, so as to avoid glare and enhance the brightness and uniformity of the panel. | 03-06-2014 |
| 20140177267 | BACKLIGHT MODULE INCLUDING CICULAR AND CYLINDER FRESNEL LENSES - A backlight module includes a carrier plate, a plurality of light sources, a plurality of circular Fresnel lenses, and a plurality of cylinder Fresnel lenses. The circular Fresnel lenses are arranged in an array form on the carrier plate. The light sources correspond to the circular Fresnel lenses, and are located in a side away from the carrier plate. One cylinder Fresnel lens is set between every two adjacent circular Fresnel lenses. A length direction of each cylinder Fresnel lens is parallel to an extending direction of adjacent column of the circular Fresnel lens. The circular and cylinder Fresnel lenses are used to reflect a light incident into their surfaces, and to increase an emission angle of the reflected light. | 06-26-2014 |
| 20140192552 | BACKLIGHT MODULE - The present invention provides a backlight module which contains a collection device for collecting sunlight, an optical fiber cable, at least a light guide device connecting the collection device through the optical fiber cable, and a diffusion device and an optical member fixed at a distance from a side of each light guide device. Sunlight is collected by the collection device and is introduced into each light guide device; and each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially. The energy consumption and environmental friendliness of the backlight module of the present invention are greatly enhanced. The illumination efficiency and lighting uniformity are also improved by a simplified structure. | 07-10-2014 |
| 20150049505 | TRANSPARENT LIGHT GUIDE - A light guide for illuminating a mobile electronic device display. The light guide includes a light source, a light guide panel element having a light input surface located to receive light and a light output surface located proximate to a display active area, and a light guide ring surrounding the light guide panel element and having at least one end located proximate to the light source. The light guide ring may be shaped such that a significant portion of light enters the end(s) of the light guide ring and moves through it around the light guide panel element. A portion of the light moves into the light input surface of the light guide panel element and is redirected out the light output surface toward the display, thereby illuminating it the display with increased efficiency and uniformity. The light guide panel element may be transparent and positioned above or below the display. | 02-19-2015 |
| 20150330597 | FRONT-LIT REFLECTIVE DISPLAY DEVICE - This application describes a front-lit reflective display assembly including a reflective display and an illumination article for front-lighting the display when the article is optically coupled to a light source. The illumination article includes a variable index light extraction layer optically coupled to a lightguide. The variable index light extraction layer has first and second regions, the first region comprising nanovoided polymeric material, the second region comprising the nanovoided polymeric material and an additional material, the first and second regions being disposed such that for light being transported at a supercritical angle in the lightguide, the variable index light extraction layer selectively extracts the light in a predetermined way based on the geometric arrangement of the first and second regions. Front-lit reflective display devices including the front-lit reflective display assembly optically coupled to a light source are also described. | 11-19-2015 |
| 20160011359 | REFLECTIVE DISPLAY FOR PREVENTING COLOR DISTORTION AND DETERIORATION OF COLOR PURITY | 01-14-2016 |
| 20160048060 | LIGHT SOURCE DEVICE FOR REFLECTIVE MICRODISPLAY PANEL - The present invention provides a light source device for a reflective microdisplay panel is disclosed. The light source device comprises: a first light bar, disposed on a first side of the reflective microdisplay panel. The first light bar comprises: a substrate, a plurality of micro LED units, and a controlling unit. The micro LED units are formed on the substrate, each micro LED unit corresponding to a screen area of the reflective microdisplay panel. The controlling unit is coupled to the micro LED units, and utilized for controlling luminance of each of the micro LED units individually according to luminance of the screen areas of the reflective microdisplay panel. | 02-18-2016 |
