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Edge lit type light guide behind liquid crystal

Subclass of:

349 - Liquid crystal cells, elements and systems

349056000 - PARTICULAR STRUCTURE

349061000 - Particular illumination

349062000 - With integral optical element for guiding or distributing light from the light source

Patent class list (only not empty are listed)

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Entries
DocumentTitleDate
20100157200Backlight unit providing polarized light and display apparatus employing the same - Example embodiments relate to a backlight unit and a display apparatus employing the same. The backlight unit may include a light source; a polarization conversion unit configured to convert polarization of light incident from the light source; and a light guide plate configured to emit light incident through the polarization conversion unit. The light guide plate may include a plurality of light emitting portions configured to emit light through specular reflection. The light polarized by the polarization conversion unit may maintain its polarization state when it is subsequently emitted from the light guide plate.06-24-2010
20100165253BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - Disclosed are a backlight assembly including a light guide plate having at least one slit, at least one light source unit disposed at a side of the light guide plate, and a lower cover which accommodates the light source unit and has at least one support coupled with the at least one slit.07-01-2010
20100165251MICROLENS ASSEMBLY FORMED WITH CURVED INCLINE AND METHOD FOR MANUFACTURING THE SAME, AND LIGHT GUIDING PLATE, BACK LIGHT UNIT AND DISPLAY USING THE SAME - Provided are a light guiding plate for providing a background light source to a non-emission display device, a back light unit, and a microlens used therein. The microlens having a curved incline formed therein is made of a light transmitting material to reflect and refract light emitted from a light source. Here, the microlens has a polyhedral shape including a bottom face, a top face opposed to the bottom face, and a plurality of side faces formed between the bottom face and the top face, wherein at least one side face crossing a traveling direction of the light emitted from the light source among the plurality of side faces is a curved face inclined about the bottom face.07-01-2010
20100165254Light guide panel for LCD back light unit and LCD back light unit thereby - A light guide plate for an LCD back light unit has a rear surface formed with a main prism portion including a plurality of prisms, and a front surface formed with a front-lens part including a plurality of optical members such as lenticular lenses or microlenses so as to improve visibility of a predetermined pattern of the main prism part, and a liquid crystal display device using the light guide plate.07-01-2010
20130083270LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device in which uneven brightness in a side-light type backlight unit is reduced, the uneven brightness being generated through reflection of light from a light source at an interface of an engaging cutout portion for preventing a light guide plate from shifting. A light guide plate (04-04-2013
20130044279BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY - The present invention discloses a backlight module which comprises a back-plate, the back-plate is in a L-shape and includes a first back-plate and a second back-plate; the backlight module further comprises a first radiator and a first light source used to emit red light, the first radiator is connected to the first light source; the first back-plate has a through hole, the first radiator is disposed on the outer side of the first back-plate, the first light source is inserted in the through hole and is extended to the inner side of the first back-plate. The present invention also discloses a liquid crystal display.02-21-2013
20110176089AREA LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - An area light source device that is capable of evenly emitting light by reducing leakage in the vicinity of the light source, and enhancing the light emission luminance by exiting light of narrower directional characteristics. A light guide substrate includes a light introducing section and a light guide plate main body. Diffusion patterns are provided at the light exit surface of the light guide plate main body. A low refraction index layer is formed at the lower surface of the light guide plate main body, and a reflection layer is formed at the lower surface of the low refraction index layer. The point light source is positioned facing an end face of the light introducing section. A directivity conversion unit is arranged on the upper surface of the light introducing section. The directivity conversion unit is configured by radially arraying a directivity conversion pattern having a V groove shape.07-21-2011
20110187967SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A surface light source device includes a point source of light and a light guide plate causing light from the point source of light introduced from a light incident end face and emitted from a light emission surface to outside. The light guide plate is formed of a light introducing portion provided at an end of a light guide plate body. The point source of light is placed facing the light incident end face positioned at an end face of the light introducing portion. Along a region of the light introducing portion adjacent to the light guide plate body, a directivity converting portion is provided. The directivity converting portion is configured by arranging V-grooved directivity conversion patterns in an arc shape. A region of the light introducing portion has a thickness equal to that of the light guide plate body and has a surface positioned in the same plane.08-04-2011
20080259249DISPLAY APPARATUS - A display apparatus includes at least one display substrate, a light source which generates light, and a light-guide substrate which guides light generated by the light source to emit light toward the at least one display substrate. The light-guide substrate includes an incident surface adjacent to the light source, a first surface and a second surface. The first surface is extended from the incident surface and includes a first color filter layer which is formed thereon and displays color, and the second surface is opposite to the first surface.10-23-2008
20080259248Multilens member, illumination apparatus, and liquid crystal display apparatus - A multilens member is provided, the multilens member including a base member which has light transmissivity; a plurality of first lenses which are formed on the base member; and a plurality of second lenses which are formed on the plurality of first lenses and which are joined to the plurality of first lenses on first surfaces opposed to the base member; wherein the first surfaces of the second lenses have junction which are joined to the first lenses and overhang which overhangs outwardly from the junction portions. That is, the multilens member having the overhang shape is provided. Accordingly, it is possible to provide the optical member which improves the optical performance of an illumination apparatus and which realizes the thin size and the low cost of the illumination apparatus and a liquid crystal display apparatus.10-23-2008
20130077026DISPLAY MODULE - A display module having a printed circuit board, a light emitting diode disposed at one surface of the printed circuit board, and an installation installed at the printed circuit board, the printed circuit board provided with an accommodating groove in a concaved manner so that at least a portion of the installation is accommodated therein.03-28-2013
20130077027LED ARRAYS - This invention relates to structures for mounting LEDs, said structures being suitable for use in the manufacture of light guide devices. This invention also relates to light guide devices comprising said structures and methods of manufacture of the aforementioned. The light guide devices are suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays.03-28-2013
20090122231Liquid crystal display device - Light-emitting elements can be accurately directly opposed to the entrance surface of a light guide at an accurate distance therefrom, and can be mounted on a single side of a printed circuit board together with other electronic components, whereby the number of manufacturing steps and the thickness of a liquid crystal display device can be reduced. The light guide and the printed circuit board are disposed on the back surface of the liquid crystal display panel, and the respective light-emitting elements are inserted through through-holes formed to extend through the printed circuit board, with the light-emitting portions of the respective light-emitting elements opposed to the entrance surface of the light guide. The light-emitting elements, together with the other electronic components, are mounted on the printed circuit board from one side. Electrodes of the light-emitting elements are bridged and secured to a mounting surface of the printed circuit board.05-14-2009
20090122230PLANE LIGHT SOURCE APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS - The present invention provides a plane light source apparatus includes a light guide plate having a flat face portion and an end face portion. A plurality of point light sources are disposed in an opposing relationship to the end face portion of the light guide plate. The light guide plate mixes light from the point light sources incoming from the end face portion thereof and emit the mixed light as illumination light from the flat face portion thereof. The point light sources are a combination of point light sources having chromaticities different from each other within a predetermined standard chromaticity range, and mix light from the point light sources so that the chromaticity of the resulting illumination light fits into a target chromaticity range which is narrower than the standard chromaticity range.05-14-2009
20090122229Light guiding and dispersing plate and display device having the same - A monolithic light guiding and dispersing plate is provided in a backlighted display panel for receiving input light from one or more edge sources and for guiding the received light throughout the plate for substantially uniform reflection upwardly and substantially uniform dispersal toward an image forming plane located above the light guiding and dispersing plate. In one embodiment, the light guiding and dispersing plate has a light receiving surface upon which the light generated by an edge light source is incident, a top major surface which is adjacent to the light receiving surface and on which a plurality of first protrusions are formed and elongated in a first direction, wherein the first protrusions have cross-sections in the shapes of partial ellipses. The plate further has a bottom major surface in which light reflecting recesses are defined to reflect light upwardly towards the top major surface.05-14-2009
20100118230BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - In one embodiment of the present invention, a backlight device is disclosed wherein a contrast ratio is improved with a decrease in light source service life being suppressed, and a liquid crystal display device using such backlight device. The backlight device is provided with an, optical layer whose main surface is a light outgoing surface; a main light source that is arranged at a position facing a main surface of the optical layer and emits light toward the optical layer; a light guide plate that is arranged on a main surface side, so as to be parallel to the main surface, and has a main surface on an optical layer side as a light outgoing surface; a sub-light source that is arranged at a position facing a side surface of the light guide plate and emits light toward the side surface; and a driving portion for driving the main light source and the sub-light source. The main light source is provided with a plurality of fluorescent tubes arranged parallel to the optical layer. The driving portion outputs drive pulses to the plurality of the fluorescent tubes, respectively, and adjusts the light amounts of the plurality of the fluorescent tubes by modulating the pulse widths of the drive pulses (PWM dimming method).05-13-2010
20100073601LIQUID CRYSTAL DISPLAY APPARATUS CAPABLE OF LIMITING VIEW ANGLE - A liquid crystal display apparatus has a liquid crystal display device, a surface light source, and a view angle limiting device arranged between the surface light source and the liquid crystal display device. The view angle limiting device includes first and second transparent plates facing each other with a gap therebetween, a plurality of first ½ retardation layers having a predetermined shape formed to be spaced apart from each other on one of the facing inner surfaces of the first and second transparent plates, a plurality of second ½ retardation layers formed on the other inner surface at regions corresponding to the regions between the first ½ retardation layers, and a polarizing film provided at the outer surface of one of the first and second transparent plates that faces the surface light source.03-25-2010
20100073600PLANAR ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A planar illumination device 03-25-2010
20130038817BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device (02-14-2013
20130038816LIQUID CRYSTAL DISPLAY DEVICE AND LIGHT GUIDE PLATE THEREOF - A light guide plate comprises two supporting bars and a light transmission plate. Each of the supporting bars includes a wall and a first supporting protruded element. Each of the walls has a wall surface, which face each other. Each of the first supporting protruded elements is connected to one of the walls, and is protruded outside the wall surface. The light transmission plate has a light exiting surface, a light entering side surface and a bottom surface. The light exiting surface is disposed oppositely to the bottom surface, and the light entering side surface is connected between the light exiting surface and the bottom surface. The light transmission plate is connected between the supporting bars. Each of the first supporting protruded elements is disposed above the light exiting surface, and a first gap is disposed between each of the first supporting protruded elements and the light exiting surface.02-14-2013
20100045898BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit for an LCD device produces a more uniform brightness by reducing or preventing bright lines occurring at the location of each LED device. The backlight unit includes a plurality of light guide plates which are arranged to overlap with an incident portion of adjacent light guide plate to at least partially cover the LED array. Accordingly, the backlight unit can prevent the generation of bright lines and hot spots caused when the light guide plate does not cover the LED array. As a result, the LCD device may improve images of uniform brightness.02-25-2010
20100103351PRISM SHEET HAVING WET-OUT PROPERTY AND LCD BACK LIGHT UNIT THEREBY - A prism sheet, capable of enhancing wet-out ability in a whole back light unit while maintaining center brightness, transmittance and haze in good condition, is disclosed. The prism sheet includes a base film made of a transparent material and having a flat first surface, and a light refracting part including a plurality of unit prisms unitarily formed with the base film on a second surface of the base film, opposite to the flat first surface. The unit prisms have a predetermined shape of a cross section, and are arranged with orientation. When an angle formed between a ridge of the unit prism of the light refracting part and a normal line of the flat first surface is defined as θ04-29-2010
20100141870OPTICAL SHEET AND LCD APPARATUS HAVING THE SAME - Disclosed are an optical sheet and a LCD apparatus having the same. The optical sheet receives a light emitted from a light guiding plate which is disposed under the optical sheet and emits the light substantially perpendicular to a liquid crystal panel. The optical sheet comprises a first prism pattern made of a material having a first refractive index and a second prism pattern made of a material having a second refractive index which is larger than the first refractive index. The viewing angle of the LCD apparatus having the optical sheet is extended and the brightness thereof is enhanced while a gray scale inversion is reduced.06-10-2010
20120262647Liquid Crystal Display and Backlight Module Employed Therein - The present disclosure provides a backlight module. The backlight module includes a light guide plate and a light bar. The light guide plate includes a light incident surface, and the light bar is adjacent to the light incident surface. The light bar includes a printed circuit board and a plurality of point light sources alternately located on the printed circuit board. Each point light source includes an illuminator and an encapsulation apparatus. The encapsulation apparatus encapsulates the illuminator and fixes the light guide plate for limiting a distance between the light incident surface and the illuminator. The present disclosure also provides a liquid crystal display employing the backlight module.10-18-2012
20130027635LIGHTING UNIT, LIQUID CRYSTAL DISPLAY, AND ELECTRONIC APPARATUS - An end of a light guide plate used for a liquid crystal display and a lighting unit, which is positioned on one side in a first direction, is provided with a depressed portion, and another end of the light guide plate, which is positioned on the other side in the first direction, is provided with a projecting portion. Using the depressed portion and the projecting portion, the light guide plate is placed in a predetermined position of a frame body. The depressed portion and the projecting portion are formed at positions opposite each other in the first direction, and the projecting portion is equal to or smaller than the depressed portion in size.01-31-2013
20100328581Liquid Crystal Display Device - A liquid crystal display device includes a display panel, a backlight which radiates light to the display panel, a light emitting element which is mounted on the backlight, and a light guide plate on which light from the light emitting element is incident. The light guide plate has an upper surface and a bottom surface. The bottom surface has grooves formed therein delimited by at least one surface which extends at a slant with respect to the bottom surface. A reflection sheet is provided which reflects the light radiated from the bottom surface. The grooves are formed to produce a first light which is reflected on the grooves and a second light which is radiated from the grooves and is reflected on the reflection sheet, and an asymmetric prism sheet is arranged on the light guide plate.12-30-2010
20120182500SCANNING BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A scanning backlight unit, a liquid crystal display and television and a television are provided herein. The backlight unit including a light source unit having plural groups of light sources which emit light in a main incidence direction; a control unit which controls the plural groups of light sources; and a light guiding plate having a bottom surface formed with a dispersion pattern dispersing the light received from the light source unit, wherein the dispersion pattern includes a plurality of grooves, with a groove of the plurality of grooves having a shape with a first size parallel to the main incidence direction and a second size perpendicular to the main incidence direction, and wherein the first size is larger than the second size.07-19-2012
20120182499DISPLAY MODULE - A display module includes a display panel configured to display an image and a backlight. The backlight includes a light guide panel configured to guide light to the display panel, a light source element configured to supply light to the light guide panel, and a reflection sheet disposed over the light guide panel, wherein a chromaticity compensation layer is formed in the backlight unit. The chromaticity compensation layer formed in the backlight reduces yellowing.07-19-2012
20130208214BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - The present invention relates to a backlight module and a liquid crystal display (LCD) device, and the backlight module comprises a light guide plate, a base, a light source and a specular reflection plate. An included angle is provided between a light output surface of the light source and a light input surface of the light guide plate, and the included angle is smaller than 90 degree. The backlight module and the LCD device according to the present invention can increase the light coupling efficiency of the backlight module by changing the shape of the light output surface of the light source, so as to solve the technology problem that the light coupling efficiency of the traditional backlight module and the LCD device is relatively low.08-15-2013
20080297694BACKLIGHT MODULE OF REDUCING LIGHT LEAKAGE FOR USE IN A LIQUID CRYSTAL DISPLAY DEVICE - A backlight module includes a frame, a plurality of light tubes disposed on the frame, an optical sheet, a first light tube fixing component disposed on a side of the frame, and a second light tube fixing component disposed on a bottom surface of the frame. The frame includes a plurality of holes defined on a bottom surface of the frame. The first light tube fixing component is used for fixing the plurality of light tubes on the frame. The first light tube fixing component includes light proof member and a light reflective component. The light proof member is used for blocking light from the plurality of light tubes. The light reflective component is used for reflecting light from the plurality of light tubes toward the optical sheet. The light proof member and the light reflective component are integrally formed. The second light tube includes a substrate plate, a plurality of supporting holders disposed on a first side of the substrate plate, and a plurality of engaging portions disposed on a second side opposite to the first side. Each engaging portion is made of light proof materials and corresponds to one of the plurality of holes. The substrate plate, the plurality of supporting holders, and the plurality of engaging portions are integrally formed.12-04-2008
20090303417SURFACE ILLUMINATOR AND LIQUID CRYSTAL DISPLAY USING SAME - The present invention provides a surface illuminator having a uniform luminance over a large area by using a laser light source, having a wide color reproduction range, and capable of suppressing a speckle noise, as well as a liquid crystal display using the same. The surface illuminator of the present invention includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that makes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and making the incident laser beam to emit from a first major surface. Further, the liquid crystal display of the present invention includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from backside in this liquid crystal display.12-10-2009
20110007242LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display (LCD) device, an LED PCB with the reflection layer formed on surface thereof is installed at an upper side of the LED array and a reflection plate extends such that it sufficiently covers the lower portion of the LED array to thus make light emitted from the light source incident to its maximum level, thus coping with the reduction in the quantity of light resulting from making the LCD device thinner. The LCD device includes: a liquid crystal panel; an LED array supplying light to the liquid crystal panel; a light guide plate installed in a direction in which the LED outputs light, and guiding light; a reflection plate formed between the LED array and a lower portion of a lower cover; and an LED PCB attached to an upper portion of the lower cover at an upper side of the LED array and having a reflection layer formed at a side facing the light guide plate. Because an existing LED housing reflector is removed, a cost and processing time can be reduced and an assembling process is simplified to improve a defective rate and production yield.01-13-2011
20130057807LIGHT GUIDE PLATE, SUFRACE LIGHT SOURCE DEVICE, AND DISPLAY DEVICE - A light guide plate includes a body portion, first unit optical elements extending on the body portion in the light guide direction, and second unit optical elements disposed in between the first unit optical elements on the body portion. The width of each first unit optical element gradually decreases from that at the center to that at each end in the light guide direction. The ratio of the height to the width in each first unit optical element at the center is higher than the ratio of the height to the width in each second unit optical element.03-07-2013
20090040431Liquid crystal display panel with improved image contrast - The present invention relates to a liquid crystal display panel with improved image contrast comprising an array of pixel regions and a sequence of a recycling backlight structure comprising broadband rear interference polar (RI-Polar) having a transmission axis AB with preset orientation, a spatial intensity modulation structure comprising a broadband front interference polar (FI-Polar) having a transmission axis approximately parallel to the transmission axis AB, a spectral filtering structure, and antireflection means. Each said pixel region spatially encompasses a plurality of subpixel regions. The RI-Polar and FI-Polar are multilayer structures of stacked layers. At least one layer of each structure is optically anisotropic, made by means of Cascade Crystallization Process and characterized by a globally ordered biaxial crystalline structure with an intermolecular spacing of 3.4±0.3 Å in the direction approximately parallel to the transmission axis AB. Said layer is transparent in the wavelength band of visible light, and is formed by rodlike supramolecules, which represent at least one polycyclic organic compound with a conjugated π-system and ionogenic groups.02-12-2009
20090040430Backlight module with bezel having protrusions thereon and liquid crystal display using same - An exemplary backlight module includes at least one light source, a light guiding plate having a light incident portion adjacent to the at least one light source, a bezel having a plurality of protrusion; and a reflector disposed between the light guiding plate and the protrusions of the bezel. The protrusions abut edges of the reflector, and provide supporting force to attach the reflector to the bezel. A related liquid crystal display is also provided.02-12-2009
20090040428Lightguide plate, planar light unit and display apparatus - A sheet-shaped lightguide plate has a substrate layer (02-12-2009
20090040427ILLUMINATION APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS - An illumination apparatus is disclosed. The illumination apparatus includes a polarization plate, a light source, and a light transmission film disposed between the polarization plate and the light source and including a plurality of prisms formed on a surface thereof. The plurality of prisms each have a ridge line in a first direction and are continuously arranged in a second direction perpendicular to the first direction. The light transmission film is disposed such that a ridge line direction of the plurality of prisms is one of a perpendicular direction and an approximately perpendicular direction to a transmission axis of the polarization plate. The plurality of prisms each have refractive indexes in the ridge line direction, an arrangement direction, and a thickness direction, the refractive index in the ridge line direction being larger than the refractive indexes in the arrangement direction and thickness direction.02-12-2009
20090091688LIQUID CRYSTAL MODULE - A liquid crystal module includes a liquid crystal panel, a lamp unit, a light guide plate, a rear frame and a light reflecting sheet. The lamp unit is configured to emit light. The light guide plate is configured to guide the light emitted by the lamp unit, and has a peripheral face. The rear frame is disposed rearward of the light guide plate, and has a facing portion facing a part of the peripheral face of the light guide plate. The light reflecting sheet is disposed between the light guide plate and the rear frame, and has a tab portion that is sandwiched between the part of the peripheral face of the light guide plate and the facing portion of the rear frame.04-09-2009
20090091687Liquid Crystal Display Device - A liquid crystal display device includes at least a liquid crystal display panel, which uses a pair of transparent substrates which are arranged to face each other with liquid crystal disposed therebetween as an envelope, and a light guide plate, which guides light from a light source, being sequentially arranged from a viewer side. The liquid crystal display panel forms light reflection layers on a liquid-crystal-side surface of the light-guide-plate side transparent substrate using portions of respective pixels and forms color filters which face the light reflection layers on the liquid-crystal-side surface of one transparent substrate or a liquid-crystal-side surface of the other transparent substrate which faces the one transparent substrate. Light from the light source is irradiated such that respective colors thereof, which constitute three primary colors, are sequentially changed over.04-09-2009
20120224123LCD and Light Guide Plate Thereof - A light guide plate includes a main body, a main reflective structure and an auxiliary reflective structure. The main reflective structure has a first included angle and a second included angle with respect to a bottom surface of the main body. The auxiliary reflective structure is adjacent to the main reflective structure and has a third included angle and a fourth included angle with respect to the bottom surface. A height difference between the main reflective structure and the auxiliary reflective structure ranges between 1.5 micrometer and 5 micrometer, and a bottom width of the auxiliary reflective structure on the bottom surface is smaller than a bottom width of the main reflective structure on the bottom surface. A liquid crystal display is also disclosed herein.09-06-2012
20130063682Optical Film and Backlight Module and LCD Device Having the Optical Film - An optical film is to attach on a light-incident surface of a light guide plate which cooperates with a plurality of side-light sources in order to form a backlight module. A plurality of specially designed micro-structures is formed on the optical film to better deflect the light generated by the side-light sources before the light enters the light guide plate. Such that, by having the optical film, the dark areas of the light guide plate can be reduced, the effective visual area of the LCD device can be enlarged, and the number of side-light sources as well as the cost for producing the backlight module and the LCD device can be substantially reduced.03-14-2013
20090009689PLANAR LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS HAVING THE SAME - A planar light-emitting device includes a lightguide plate (01-08-2009
20090009688Liquid Crystal Display Device - The present invention provides a liquid crystal display device which can largely enhance a property of focusing light from a backlight. The backlight arranged on a back surface of a liquid crystal panel includes a light guide plate, a light source, a first asymmetrical prism sheet, and a second asymmetrical prism sheet. A reflection surface having an inclination of 2° or less for guiding light from the light source toward the liquid crystal display panel is formed on a back surface of the light guide plate. The first asymmetrical prism sheet and the second asymmetrical prism sheet respectively include projecting portions which extend in the arrangement direction of the light source and are arranged in parallel to each other in the direction which intersects the arrangement direction of the light source.01-08-2009
20120113359Backlight Unit and a Liquid Crystal Display Apparatus Applying the Same Therein - A backlight unit and a video display apparatus having a plural number of sets of one or more of light sources. A light guidance plate for guiding lights from the light sources to a side of a liquid crystal panel, to be emitted. The light sources are disposed on one end side of the light guidance plate. Assuming that width of the gap or groove is “d”, distance between a light incident surface of the liquid crystal panel and a light emission surface of the light guidance plate, or distance between a light incident surface of an optical member disposed between the liquid crystal panel and the light guidance plate and a light emission surface of the light guidance plate is “h”, and further 2.0 mm>d≧0.1 mm and 10.0 mm>h≧0.4 mm, then the following condition is satisfied: 4≦h/d≦100.05-10-2012
20080297695Liquid Crystal Display Device - An object of the present invention is to provide a liquid crystal display device having a light guide plate that is capable of providing improved liquid crystal display performance without generating a striped image. The liquid crystal display device includes a light guide plate, which illuminates a liquid crystal panel from its rear surface, and light sources, which shed a light ray on the light guide plate. The rear surface of the light guide plate is separated into a plurality of rear surface divisions by concave grooves. The light sources can adjust the brightness of each rear surface division. The display performance of the liquid crystal panel is improved by individually managing a plurality of regions of the liquid crystal panel, which correspond to the rear surface divisions, and darkening a rear surface division that corresponds to a region where the black color is predominant.12-04-2008
20120236231LIQUID CRYSTAL DISPLAY AND LED MODULE THEREOF - A liquid crystal display (LCD) includes a cover assembly; a liquid crystal panel; a light guide plate configured to guide light to the liquid crystal panel; a printed circuit board (PCB) to which the light guide plate is mounted; and a light emitting diode (LED) package which is mounted on the PCB and emits light to a lateral side of the light guide plate. The PCB includes a base substrate; a connecting hole which is formed in the base substrate to couple the base substrate to the cover assembly with a connecting member; an insulating layer which is coated on the base substrate while avoiding a head part of the connecting member; and a spacer tape which is provided on an upper side of the insulating layer so that the light guide plate is evenly mounted on the PCB.09-20-2012
20130162932BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A backlight unit and a display device having the same are discussed. According to an embodiment, the backlight unit includes a light source configured to generate light; and a light guide plate configured to distribute the light received from the light source, the light guide plate including: at least one body, each of the at least one body divided into a plurality of blocks, and a plurality of reflective patterns formed on a bottom surface of the body, wherein the plurality of reflective patterns are selectively provided at some of the plurality of blocks.06-27-2013
20130162933ELECTRONIC DEVICE - An electronic device including a display is provided. The display displays a received information content, and the information content has a horizontal direction. The display has a horizontal direction parallel to the information content's horizontal direction. The display includes a display panel, a backlight module and a first polarization unit. The backlight module is disposed at a side of the display panel, wherein the backlight module includes a horizontal prism sheet. The horizontal prism sheet includes a plurality of first prisms, wherein top angles of the first prisms are larger than or equal to 80 degrees and are smaller than 90 degrees. The display panel is located between the first polarization unit and the backlight module. A first angle between a transmission axis of the first polarization unit and the horizontal direction of the display is larger than 45 degrees and smaller than 135 degrees.06-27-2013
20090073346BACKLIGHT AND LIQUID CRYSTAL DISPLAY APPARATUS - The backlight includes a first light guide plate which emits a light inputted from an end face thereof from a main surface thereof, a second light guide plate which includes an end face for an incoming light and an end face for an emitting light, and which is arranged behind the first light guide plate, a reflection sheet which is arranged between the first light guide plate and the second light guide plate, a chassis which houses the first light guide plate, the second light guide plate and the reflection sheet, and a rear cover which fixes the first light guide plate, the second light guide plate and the reflection sheet with the chassis. The first light guide plate and the second light guide plate are positioned in a thickness direction thereof.03-19-2009
20090115937LIGHT GUIDE PLATE AND LIQUID CRYSTAL DISPLAY USING THE SAME - Disclosed is a light guide plate, comprising a light guide plate body and a plurality of micro mirrors formed on an upper surface of the light guide plate body for controlling a reflection direction of light incident on the light guide plate. The amount of light output from a backlight module using the light guide plate can be controlled by adjusting an angle of each of the micro mirrors with respect to an incident light from a light source.05-07-2009
20120147293REDUNDANT 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
20100033653Backlight Assembly and Liquid Crystal Display Apparatus Having the Same - A backlight assembly includes a light-guiding plate and a light-generating member. The light-guiding plate has a lower surface, an upper surface and a side surface at which a combining recess is formed. The light-generating member includes a light source and a body. The combining recess has a first side surface, a second side surface facing the first side surface and a light-entering surface connected to the first and second side surfaces. A first width of the combining recess adjacent to the side surface of the light-guiding plate is greater than a second width of the combining recess adjacent to the light-entering surface. Moreover, at least a portion of the body of the light-generating member is for being inserted into the combining recess.02-11-2010
20100171903ILLUMINATING DEVICE AND DISPLAY DEVICE - An illuminating device is provided that includes a light guide plate, a light source disposed on a side face of the light guide plate, and a light modulation element disposed on the surface or on the inside of the light guide plate and joined to the light guide plate. The light modulation element has a pair of transparent substrates disposed apart from each other and opposed to each other, an electrode capable of generating an electric field in a direction parallel to the surface of the transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates, and including a first region and a second region whose response speeds to the electric field are different from each other, and at least one of the first region and the second region has optical anisotropy.07-08-2010
20110279753BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - A display apparatus includes a light guide plate, a light source unit, a display panel, a receiving container, and a driving part. The light guide plate includes at least one chamfered corner and a light incident surface defined by the chamfered corner. The light source unit generates the light and is positioned adjacent to the light incident surface. The display panel receives the light to display an image and the receiving container includes a bottom and sidewalls extended from the bottom to receive the light guide plate and the light source unit. The driving part is electrically connected to the display panel to apply a driving signal to the display panel and is electrically connected to the light source unit to apply a power source voltage to the light source unit.11-17-2011
20090207340LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device including a liquid crystal display panel on which an image is displayed; first and second polarizing plates each attached to upper and lower surfaces of the liquid crystal display panel; a lamp emitting light; a light guide plate guiding light from the lamp to the liquid crystal display panel; and a prism sheet disposed between the light guide plate and the liquid crystal display panel and having a plurality of prism bulges arranged in a surface thereof, the prism bulges having a predetermined pitch, wherein an arrangement direction of the prism bulges on the prism sheet is cross to the transmission axis of the second polarizing plate at a predetermined angle to the transmission axis.08-20-2009
20090207342PLANAR LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - Provided is a planar light source device (08-20-2009
20090207341LIGHT CONTROL ELEMENT, SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A light control element capable of controlling deflection of light output through a light guide plate to a desired output viewing angle is provided. A light control element (prism sheet) has a plane of incidence on one surface thereof, and a plane of output on the other surface thereof. The plane of incidence is formed as having thereon a number of prism portions arrayed in parallel. Each of the prism portions has a first prism surface allowing incidence of light, and a second prism surface where the light entering through the first prism surface is reflected by total reflection on the inner side. The second prism surface has an outwardly-swelled curved profile, formed with a curvature that allows the light to output through the plane of output at a second output viewing angle wider than a first output viewing angle of a case where the second prism surface is flat.08-20-2009
20100201918LIQUID CRYSTAL DISPLAY APPARATUS AND LIQUID CRYSTAL DISPLAY PANEL THEREOF - A liquid crystal display (LCD) panel having a plurality of pixels includes a first substrate and a second substrate disposed opposite to each other. The first substrate has a common electrode layer which has a first common area and a second common area. The second substrate has a plurality of data lines, a plurality of scan lines, a plurality of signal lines and a pixel electrode layer. The data lines and the scan lines are disposed in array and around the pixels. The signal lines traverse the pixels, respectively. For each of the pixels, the pixel electrode layer overlaps the data line and/or the scan line, and is divided into a first pixel area and a second pixel area by the signal line. The first common area is disposed corresponding to the second pixel area. The first pixel area has a first slit pattern. At least one of the first common area and the second pixel area has a second slit pattern which differs from the first slit pattern in geometry.08-12-2010
20100201917LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME - Disclosed are a liquid crystal display device including LED local blocks commonly applicable to liquid crystal display panels having different sizes, regardless of model sizes of liquid crystal display device, and a method for fabricating the same.08-12-2010
20090040426DIRECTIONAL BACKLIGHT, A MULTIPLE VIEW DISPLAY AND A MULTI-DIRECTION DISPLAY - A directional backlight, a multiple view display and a multi-direction display A multiple view display (02-12-2009
20110299013PLANAR ILLUMINATION DEVICE AND DISPLAY DEVICE PROVIDED WITH THE SAME - A planar illumination device is provided that enhances the efficiency of use of light and its brightness while suppressing uneven brightness, that reduces an increase in the manufacturing cost and that can reduce the thickness of the planar illumination device. In this backlight device (planar illumination device) (12-08-2011
20110299012LIGHT GUIDE FILM - A flexible light guide film having a light-adjusting structure in the form of a lenticular-like microstructure on the bottom side of the light guide film. The light guide film has a substrate layer supporting a layer light-adjusting structure, which is in the form of an array of longitudinal lenticular lenses laterally arranged in parallel. A prismatic-like microstructure may be provided on the top light emitting side of the light guide film. The light guide film is fabricated by a process involving coating/embossing of a roll of sheet material, in a roll-to-roll continuous process. Advantages includes significantly reducing the thickness of the light guide film, and the roll-to-roll fabrication process provides for more precise replication of the microstructures on the master mold or drum onto the surface of the light guide film, which in turn reduces the failure rate and manufacturing cost.12-08-2011
20110292322ELECTRONIC DEVICE - An electronic device is provided. The electronic device includes a light source, a light guide, a display unit and a frame. The light source provides a light beam. The light guide includes a light emitting surface and a light entering surface, wherein the light beam enters the light guide through the light entering surface, and is emitted from the light emitting surface. The display unit is corresponding to the light emitting surface, wherein the light beam is partially emitted from the light guide, passes through the display unit to display an image. The frame covers the display unit and the light guide, wherein the frame has a display portion and a transparent portion, the image is displayed in the display portion, and the light beam is partially emitted from the light guide toward the transparent portion and passes through the transparent portion.12-01-2011
20110141402LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER - A lighting device 06-16-2011
20110134370LCD APPARATUS - An LCD apparatus includes an LCD panel having a color filter for a plurality of color components and having a plurality of pixels each associated with one of the color components of the color filter, and a side lighting-type backlight unit disposed under the LCD panel. The backlight unit includes a light guide and a light source disposed at least at one lateral end of the light guide, and further includes a reflecting layer on a side opposite to a side facing the LCD panel to reflect light coming towards the reflecting layer from the light guide. The color filter is configured to compensate a change in color spectrum in the ambient light that has passed through the LCD panel and the light guide and that has been reflected by the reflecting layer back to the light guide and the LCD panel so that the color temperature of white display of the LCD panel by the ambient light remains substantially the same as the color temperature of the original ambient light.06-09-2011
20090002602Liquid crystal display with micro-structures and liquid crystal display driving method - An exemplary liquid crystal display (01-01-2009
20090002601Backlight Assembly and Display Device Having the Same - In a backlight assembly of a display device, a supporting frame receives a light-guide plate while exposing a light-exiting surface of the light-guide plate. A first receiving member covers an opposite surface of the light-guide plate facing the light-exiting surface, and a side first portion of the light-guide plate adjacent to a first side surface is inserted into a first sidewall portion of the first receiving member. A first light source is disposed between the first side surface and the first sidewall portion. A first reflective sheet is extended along an inner surface of the first receiving member and surrounds the first light source. The backlight assembly may further comprise a second receiving member, a second light source, and a second reflective sheet. A lamp reflector may be omitted, assemblability of the backlight assembly and the display device, and protection against heat, may be improved.01-01-2009
20090002600Diffusion Plate Assembly - A diffusion-plates assembly and a direct-type backlight module assembly are provided. The diffusion-plates assembly includes a first diffusion plate and a second diffusion plate. There are pluralities of first microstructures on the emergent surface of the first diffusion plate, the first microstructures is for condensing light. The thickness of the first diffusion plate is above 0.4 mm, and the transmittance of the first diffusion plate is above 90%. The second diffusion plate is placed over or under the first diffusion plate, The thickness of the second diffusion plate is above 0.4 mm, and the transmittance of the second diffusion plate is 5001-01-2009
20110216270LIQUID CRYSTAL MODULE AND ELECTRONIC APPARATUS - Disclosed herein is a liquid crystal module having a liquid crystal display panel, and a backlight unit disposed on a back surface of the liquid crystal display panel. The liquid crystal display panel has a flexible printed wiring circuit substrate for a liquid crystal display panel. The backlight unit has a light guiding plate, a light emitting diode for emitting a light, a flexible printed wiring circuit substrate for a light emitting diode, and a case in which the light guiding plate and the flexible printed wiring circuit substrate for a light emitting diode are accommodated. The flexible printed wiring circuit substrate for a liquid crystal display panel extends along a side surface of the case. The flexible printed wiring circuit substrate for a light emitting diode has a derivation portion.09-08-2011
20090190070PLANAR ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE ADOPTING THE SAME - A planar illumination device includes a laser light source; a light guide plate for guiding light entered through an end surface to be outputted from a first principal surface; an optical element which forms diffusing light outputted from the laser light source into a substantially parallel light in a thickness-wise direction of the light guide plate and which outputs the resulting parallel light to the end surface of the light guide plate; and a first light deflecting unit for deflecting a propagation direction in the light guide plate of the light incident thereon, wherein the first light deflecting unit is arranged such that a degree of deflection of the light incident on the light guide plate differs according to positions in the light guide plate, to make an amount of light outputted from the first principal surface uniform in the first principal surface.07-30-2009
20090190069Lighting device and liquid crystal display device using the same - A lighting device includes: a light source; a light guiding plate; and a reflector. The light guiding plate includes: a light entrance part, which introduces light of the light source into the light guiding plate; and a plurality of reflecting parts, which are formed on at least the one of the light exit face and the opposed face to cause the introduced light to exit to outside. The plurality of reflecting parts are arranged in staggered pattern in a circumferential direction of a circle having the light entrance part as its center, and in a radius direction orthogonal to the circumferential direction. Therefore a reflecting surface of one of the plurality of reflecting parts that is placed in a back does not fall in a shadow of another one of the plurality of reflecting parts that is placed nearer to the light source, and incident light is reflected in a wide area.07-30-2009
20090190068LIGHT GUIDING BODY, SUBSTRATE FOR DISPLAY DEVICE, AND DISPLAY DEVICE - A display device higher in light use efficiency than conventional ones, a display device substrate suitably used for such a display device, and a light guide suitably used for an illuminator of such a display device are provided. The light guide has a plane of incidence on which light is incident and a plane of emergence from which light emerges, and has a first photonic crystal structure having a refractive index changing periodically along a direction substantially parallel to the plane of emergence.07-30-2009
20100060819LIQUID CRYSTAL DISPLAY, A LIGHT GUIDE FOR USE IN A LIQUID CRYSTAL DISPLAY AND A DEVICE COMPRISING SUCH A LIQUID CRYSTAL DISPLAY - The invention relates to liquid crystal display comprising image forming layers, at least one indirect light source and a light guide. The light guide comprises a first side facing the image forming layers, a second side opposite of the first side, and an in-coupling side facing the at least one indirect light source. The in-coupling side is a beveled in-coupling side.03-11-2010
20090153779LIQUID CRYSTAL DISPLAY AND METHOD OF MANUFACTURING THE SAME - The invention relates to a transflective liquid crystal display capable of display in both of transmissive and reflective modes and a method of manufacturing the same and provides a transflective liquid crystal display which can achieve high display characteristics in both of the transmissive and reflective modes. A configuration is employed which includes a liquid crystal display panel having a pair of substrates and a liquid crystal layer sealed between the substrates, a pixel region including a reflective area having a reflector for reflecting light entering from the side of one of the pair of substrates and a transmissive area for transmitting light entering from the side of the other of the pair of substrates toward the one of the pair of substrates, a backlight unit having a reflector and a light guide plate for reflecting the light which has entered the transmissive area from the side of the one of the pair of substrates and which has been transmitted by the area to cause the light to enter the transmissive area again from the side of the other of the pair of substrates, and a color filter layer formed only in the transmissive area of the pixel region.06-18-2009
20090153778LIGHTING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A lighting device includes: a plurality of backlights each having a light guide plate disposed in the back of a lighting object to guide light and emit the light to the lighting object and a light source disposed on a side surface of the light guide plate to emit the light to the light guide plate; and connection portions connecting the plurality of backlights. Here, the plurality of backlights connected to each other forms a backlight unit to emit light to the lighting object.06-18-2009
20090040429Liquid crystal display with point illuminator bonded to liquid crystal panel thereof - An exemplary liquid crystal display includes a liquid crystal panel, a light guide plate, and a point illuminator. The liquid crystal panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first and second substrates. The light guide plate is disposed on a side of the second substrate that is not in contact with the liquid crystal layer, and includes a light incident surface. The point illuminator is rigidly bonded to the side of the second substrate that is not in contact with the liquid crystal layer, and faces the light incident surface of the light guide plate, such that the position of the point illuminator is fixed relative to the light guide plate.02-12-2009
20100123858BACKLIGHT ASSEMBLY USING FLEXIBLE LIGHT GUIDING FILM AND LIQUID CRYSTAL DISPLAY MODULE USING THE SAME - A flexible light guiding film includes a base film having a substantially constant thickness, and a light controlling portion disposed on the base film. Edges of the light controlling portion and the base film are coplanar and define a light incident surface of the light guiding film. The light incident surface is thicker than the base film, but has a similar thickness with that of a light exiting surface of a light source.05-20-2010
20080291365LIGHT SOURCE MODULE, BACKLIGHT ASSEMBLY HAVING THE SAME, DISPLAY APPARATUS HAVING THE BACKLIGHT ASSEMBLY, AND METHOD THEREOF - A light source module includes a power supply plate, a light emitting chip, and a body mold. The light emitting chip is disposed on the power supply plate to lean to one side with respect to a center of the power supply plate along a first direction and electrically connected to the power supply plate. The body mold is connected with the power supply plate to expose the light emitting chip. Therefore, a thickness of a backlight assembly employing the light source module may be reduced.11-27-2008
20100118231LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is an LCD. The LCD includes a first substrate, a second substrate facing the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate, and a light source disposed at a lateral side of the second substrate to emit light toward the second substrate. According to the LCD, light is incident into the second substrate through a lateral side of the second substrate and an image is displayed by the incident light. Since the LCD does not require an additional light guide plate, the LCD can have a slim structure as compared with an existing LCD.05-13-2010
20100085510ILLUMINATING DEVICE, DISPLAY DEVICE, AND METHOD OF MANUFACTURING LIGHT MODULATION ELEMENT - An illuminating device includes a light guide plate, a light source disposed on a side face of the light guide plate, and a light modulation element disposed on a surface or on inside of the light guide plate and joined to the light guide plate. The light modulation element has a pair of transparent substrates disposed apart from each other and opposed to each other, a pair of electrodes provided on surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region and a second region both having optical anisotropy and having response speeds to an electric field different from each other.04-08-2010
20100085509LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device having brightness uniformity at its front and lateral sides is provided according to one or more embodiments. In one embodiment, the liquid crystal display device includes a reflection sheet reflecting light, an optical plate including a substrate for guiding light, a height-varying portion formed on one surface of the substrate, not facing the reflection sheet, and a prism pattern formed on the height-varying portion, and a plurality of light sources arranged on one lateral surface of the optical plate in a first direction so as to correspond to a position of the height-varying portion having a height not greater than an average height from the one surface of the substrate to the height-varying portion, wherein the prism pattern extends in a second direction substantially perpendicular to the first direction, and the average height is in a range of about 0.1% to about 10% of the thickness of the substrate.04-08-2010
20090079908Liquid Crystal Display Panel, Liquid Crystal Display Device, and Method of Manufacturing Liquid Crystal Display Panel - A liquid crystal display panel includes a first base, a second base, and a sealing member. The first base has a display-area portion including a transparent substrate, a light shielding film formed on a surface of the transparent substrate and having a through hole, a light reflecting film formed on the light shielding film, a color filter formed at least in the through hole of the light shielding film, and a transparent electrode formed on the surface of the transparent substrate. The second base includes a transparent substrate, and a transparent electrode formed on the surface of the transparent substrate. The sealing member is a member for sealing liquid crystal between the first base and the second base.03-26-2009
20090207344Illuminating device and liquid crystal display device - In an illuminating device, a plurality of light reflecting portions each including a plurality of prisms adjacent to one another are formed on one of an opposing surface and an exit surface of a light guide plate so as to be spaced apart from one another. Each of the plurality of prisms is in a shape of a triangle in section with one of the opposing surface and the exit surface being a base of the triangle, and is formed so as to protrude therefrom. Light introduced from a light source is reflected by the plurality of prisms to be illuminating light having directivity in a vertical direction. Light which has passed through a prism which is nearer to the light input portion is again taken into the light guide plate by an adjacent prism at a subsequent stage and can be reused.08-20-2009
20090207343LIQUID CRYSTAL DISPLAY DEVICE - A backlight which arranges light emitting diodes on a side surface of light guide plate adopts the structure which allows the easy removal of the light guide plate from a mold and makes it difficult for a stress or the like to influence the fine structure of a light incident portion of the light guide plate. In a liquid crystal display device having a backlight which radiates light to a liquid crystal panel, LEDs which constitute a light emitting element are mounted on a light guide plate which is mounted on a backlight, and edge portions of the light guide plate are tapered such that a width of the light guide plate is increased in the removal direction of the side surface of the light guide plate. Further, an ejector-pin mark is formed on a lower surface of the light guide plate by pushing an ejector pin in the removal direction of the light guide plate.08-20-2009
20100079703BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME - An exemplary embodiment of the present invention discloses a backlight unit with a plurality of light-emitting blocks and a light source driving section. The plurality of light-emitting blocks are arranged in a matrix shape along first and second directions different from each other. Each of the light-emitting blocks includes a light source unit having at least one light-emitting chip to emit light, and a light guiding unit to guide the light. The light source driving section controls the light source unit of the light-emitting blocks to drive the light source unit. Therefore, a thickness of the backlight unit may be reduced.04-01-2010
20090079907Virtual solar liquid crystal window - A display system includes a building, a wall enclosed within the building, and a light guide directing light from the exterior of the building to the wall within the building. A display is supported proximate the wall where the display includes a liquid crystal layer and not including a backlight. The light guide directing the light to the liquid crystal layer is in such a manner that the combination of the light and the liquid crystal layer results in an image displayed thereon.03-26-2009
20090273731Injection mold, light guide plate fabricated using the same, and LCD device having the light guide plate - An injection mold for forming a light guide plate including a first block, a second block configured to face the first block, a forming portion included between the first and second blocks facing each other and having a shape of the light guide plate, an injection portion formed at the first block and configured to receive injected resin for forming the light guide plate, and a gate portion configured to guide the injected resin from the injection portion to the forming portion. Further, a width of a first end portion of the gate portion that is connected to the forming portion is 50%-80% of a width of the forming portion.11-05-2009
20120268691Edge-Lit Backlight Device and Liquid Crystal Display - An edge-lit backlight device is disclosed in the present disclosure. The edge-lit backlight device comprises a light guide plate, light sources and a backplate. The light guide plate comprises two wedged plate portions and a rectangular plate portion, the two wedged plate portions are disposed at two sides of the rectangular plate portion respectively, and the wedged plate portions and the rectangular plate portion each comprise a light incident surface and a bottom surface. The light sources are disposed adjacent to the light incident surfaces of the wedged plate portions and the rectangular plate portion respectively. A liquid crystal display (LCD) is also disclosed in the present disclosure. The edge-lit backlight device and the LCD of the present disclosure are simple in structure, allow for regional control functions and can dissipate heat generated by the light sources in a timely and efficient way.10-25-2012
20090046220BACKLIGHT FOR LIQUID CRYSTAL DISPLAY DEVICE - A backlight for a liquid crystal display device includes a plurality of point light sources 02-19-2009
20090279020SURFACE-AREA LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - In a surface-area light source device, a light entrance side surface of a light guide plate of a surface-area light source device has a staircase shape having steps in the vertical direction, and light emission diodes are provided at each step. The structure enables the distance between a light emission diode provided at one step and light emission diodes provided at an adjacent step to be maintained greater even if the thickness of the light guide plate is reduced so as to decrease intervals of the light emission diodes in the direction of the thickness of the light guide plate. As a consequence, the amount of transmission and reception of heat produced by the light emission diodes is reduced to prevent an increase in the temperature of the diodes. This allows a reduction in the thickness of the light guide plate with the brightness of light emitted from the light guide plate maintained, enabling the surface-area light source device to be thinned. As a result, a large number of light emitting diodes are provided, so that the brightness of the surface light source device is increased.11-12-2009
20110170036AREA LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - An area light source device that is capable of more evenly emitting light and capable of enhancing the light emission luminance by exiting light of narrower directional characteristics. A light guide substrate includes a light introducing section and a light guide plate main body for exiting the light from a light exit surface. A number of diffusion patterns are formed at the light exit surface. A low refraction index layer is formed at the lower surface of the light guide plate main body, and a reflection layer is formed at the lower surface of the low refraction index layer. The point light source is arranged at a position facing the end face of the light introducing section. A tapered portion inclined to gradually increase the thickness of the light introducing section the farther away from the light source is arranged on the upper surface of the light introducing section.07-14-2011
20130215363Edge-Lit Backlight Module and LCD Device - The invention relates to the field of liquid crystal displays, and more particularly to an edge-lit backlight module and an LCD device. The edge-lit backlight module includes a light guide panel and a positioning part for positioning the light guide panel. The light guide panel is rigidly positioned in the direction facing a light source and buffer positioned in all the other directions. A new positioning structure for light guide panels is used by the edge-lit backlight module and the LCD device of the invention. The light coupling distance between the light guide panel and the light source of the edge-lit backlight module is controlled because the light guide panel is rigidly positioned in the direction facing the light source, so as to obtain preferable light guiding effect. The light guide panel is buffer positioned in other directions in order to absorb the heat expansion or cold contraction quantity of the light guide panel, and avoid the warpage and deformation of the light guide panel; and the fracture of the light guide panel caused by the rigid contact between the light guide panel and the positioning structure when the light guide panel is impacted is avoided.08-22-2013
20090273733PLANAR LIGHT-EMITTING DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS - A planar light-emitting device comprises a plurality of light-emitting units each including a lightguide plate and arranged adjacent to each other. Each lightguide plate has a lower surface opposite to an upper surface as the light-exiting surface and a peripheral side surface extending between the peripheral edges of the upper surface and the lower surface, a light-entrance surface being defined by a part of the peripheral side surface. The light-entrance surface and its opposite surface have first and second protruding portions extending from and along the light-entrance surface and the opposite surface, respectively. In each adjacently disposed pair of light-emitting units, the first protruding portion of the first light-emitting unit abuts against the second protruding portion of the second light-emitting unit. The light source is disposed underneath the abutting protruding portions.11-05-2009
20090273732PLANAR LIGHT-EMITTING DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS - A planar light-emitting device having a plurality of lightguide plates to provide a large light-exiting surface has a plurality of light-emitting units each having a lightguide plate having an upper surface as a light-exiting surface, a lower surface opposite to the light-exiting surface, a peripheral side surface extending between the respective peripheral edges of the upper surface and the lower surface, and a light entrance surface defined by a part of the peripheral side surface. Each light-emitting unit further has a light-emitting set adjacent to the light entrance surface to emit light into the lightguide plate through the light entrance surface, and a support member that fixedly supports the light source and the lightguide plate. The light-emitting units are arranged side by side so that the light-exiting or upper surfaces of their respective lightguide plates are substantially flush with each other.11-05-2009
20090273730Illumination display with enhanced illumination edge lighting - In general, an illumination display includes a light transmitting panel that provides enhanced illumination edge lighting. One or more light sources are optically coupled into an edge of the light transmitting panel to illuminate the light transmitting panel. The light transmitting panel refracts and reflects light such that a greater intensity of light may be emitted from one or more enhanced illumination portions, such as a raised enhanced illumination portion, of the light transmitting panel. The light source(s) may emit light of different colors corresponding to different conditions such that the illumination display indicates a condition by illuminating with the color corresponding to the condition. The illumination display may be used in various devices including, but not limited to, a device for checking the temperature of food.11-05-2009
20090279021Backlight unit and liquid crystal display device having the same - A backlight unit is provided and includes a light source emitting light, a light guide plate disposed parallel to the light source, and a reflective sheet disposed at a bottom of the light guide plate. One side of the reflective sheet is slanted toward the light guide plate. A reflective member includes three sides surrounding the light source and a slanted fourth side supporting a slanted bottom of the reflective sheet. A bottom cover contacts the three sides of the reflective member.11-12-2009
20090262283FOLDED BACKLIGHT SYSTEMS FOR LIQUID CRYSTAL DISPLAYS - A liquid crystal display is provided. The liquid crystal display includes a liquid crystal display panel having pixels configured to form an image; and a backlight system proximate to the liquid crystal display panel and configured to illuminate the pixels of the liquid crystal display panel. The backlight system includes a light guide including a plate portion generally parallel to the liquid crystal display panel and a first side portion extending generally perpendicularly from the plate portion, a light source configured to emit light into the light guide via the first side portion, and a heat sink coupled to the light source and configured to remove heat generated by the light source during operation.10-22-2009
20090284687Liquid crystal display - A liquid crystal display having a wide color reproduction range is provided. A liquid crystal display includes a liquid crystal panel driven based on image signals, a light source emitting light for illuminating the liquid crystal panel, and a light selective transmission filter, which has wavelength selective transmission characteristics corresponding to spectral characteristics of the light source, selectively transmits light generated from the light source in the specific wavelength regions based on the wavelength selective transmission characteristics, and guides the transmitted light to the liquid crystal panel.11-19-2009
20090284688LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device which can make the surface brightness of an edge-light-type backlight uniform is provided. The liquid crystal display device includes a liquid crystal display panel and a backlight which radiates light to the liquid crystal display panel. The backlight includes a light guide plate which is arranged on a back side of the liquid crystal display panel, a light source arranged on an outer peripheral portion of a first main surface of the light guide plate which faces the liquid crystal display panel in an opposed manner, and a reflection sheet which is arranged on a back side of the light guide plate as viewed from the liquid crystal display panel. The light guide plate is made of a transparent resin having a refractive index of 1.53 or less. On a surface of the light guide plate opposite to the first main surface, a second main surface which is substantially parallel to the first main surface and a plurality of inclined surfaces which are inclined at a preset angle with respect to the second main surface are formed. An angle of the inclined surface positioned near a position at which light from the light source is incident and an angle of the inclined surface positioned remote from the position at which the light from the light source from the light source is incident differ from each other.11-19-2009
20090290097BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method.11-26-2009
20110170035BACKLIGHT UNIT AND DISPLAY MODULE EMPLOYING THE BACKLIGHT UNIT - A backlight unit and a display module employing the backlight unit, the backlight unit including a light guide panel for guiding light to a display apparatus for displaying an image; and a plurality of light source devices arranged in a side portion of the light guide panel, wherein the plurality of light source devices are electrically connected to each other by connecting units having conductivity. The display module may be further slimmed since the limitation due to the thickness of a light source device circuit board is eliminated.07-14-2011
20090296026Led back-light unit and liquid crystal display device using the same - An LED back-light unit and other devices using the LED back-light unit are discussed. According to one embodiment, an LED back-light unit includes a light guide portion that includes a light guide plate and a reflection plate coupled to the light guide plate, wherein the light guide plate has a light input part and a first connection part, and wherein the reflection plate has a second connection part connected to the first connection part, and a light source including at least one light emitting diode, the light source emitting light toward the light guide portion.12-03-2009
20090167987Light Guide Plate, and Backlight Assembly and Liquid Crystal Display Having the Same - A light guide plate for guiding light includes a light-incident portion allowing light generated from a light source to be incident thereon, a light-facing portion opposite to the light-incident portion, and a first prism pattern disposed between the light-incident portion and the light facing portion and substantially normal to a path of light incident from the light-incident portion to the light-facing portion path.07-02-2009
20120293746LIGHT GUIDE MODULE AND BACKLIGHT USING SAME - A light guide module (11-22-2012
20080239204Light-Guide Plate and Display Apparatus Having the Same - A light-guide plate includes a base plate, first protrusion patterns and second protrusion patterns. The first protrusion patterns are formed on a left portion of an upper surface of the base plate with respect to a central line of the upper surface. The first protrusion patterns have a cross-section of a trapezoidal shape which has a top and a bottom parallel with each other and first and second inclined sides inclined at different angles with respect to the bottom side. The second protrusion patterns are formed on a right portion of the upper surface with respect to the central line. A cross-section of the second protrusion patterns have the trapezoidal shape and disposed substantially symmetrical to the first protrusion patterns with respect to the central line.10-02-2008
20090167989SURFACE LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - A surface light source includes a light source and an optical waveguide plate. The light source serves to emit light. The optical waveguide plate has an incident end face where the light is incident and a light exit surface where the light incident on the incident end face exits. Further, the optical waveguide plate has a refractive index n. The incident end face has a plurality of concave portions. The angle between a plane formed by the plurality of concave portions and a tangent plane of the incident end face is not more than (90−2·arcsin(1/n)) degree.07-02-2009
20080278660Backlight unit and liquid crystal display device having the same - Disclosed are a backlight unit and a liquid crystal display device having the same, capable of reducing tube current variation between light sources. The backlight unit includes a plurality of lamps provided at both ends thereof with electrodes and having a tubular shape, a plurality of lamp holders for fixing the both ends of the lamps, at least one substrate on which the lamp holders are mounted, and at least two conductors formed on the substrate in opposition to each other to generate capacitance for uniformly maintaining tube current of the lamps.11-13-2008
20080278659Light-Guide Plate, Method of Manufacturing the Same and Display Apparatus Having the Same - A light-guide plate includes an incident surface, a emissive surface and a reflective surface. The incident surface includes a plurality of light-control patterns formed in sectioned regions of the incident surface. The light-control patterns have shapes different from one another according to the regions corresponding to a position of a light source. The emissive surface is extended from a side of the incident surface. The reflective surface is opposite to the emissive surface.11-13-2008
20080278661Backlight Unit and Lcd Having the Same - Provided is a backlight unit. The backlight unit includes a frame, a light guide plate, a light absorption adhesive member, and a white light source. An opening is formed in the frame. The light guide plate is attached to the frame and formed larger than the opening. The light absorption adhesive member attaches the light guide plate to the frame and absorbs incident light. The white light source provides white light to the light guide plate.11-13-2008
20080303979ILLUMINATION UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - An illumination unit includes a light guide plate, and at least one optical sheet which is disposed on a major surface of the light guide plate. The optical sheet includes bent portions which are formed by bending portions of the optical sheet at a pair of opposed sides, and the light guide plate includes, at a pair of opposed end surfaces, recess portions in which the bent portions are inserted.12-11-2008
20080309849LIGHT SOURCE UNIT, BACKLIGHT ASSEMBLY INCLUDING THE SAME, LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME, AND METHOD THEREOF - A light source unit includes a light source, and a light guide pipe formed in a columnar shape and including a plurality of grooves, to which light emitted from the light source is incident, wherein dimensions of the grooves further from the light source are different from dimensions of the grooves closer to the light source, respectively.12-18-2008
20090322988Liquid crystal display device - A liquid crystal display device capable of preventing a split between a light guide plate and a prism sheet disposed at an upper side thereof and improving concentration efficiency, the device including a liquid crystal panel configured to represent an image, a lamp disposed below the liquid crystal panel to provide light to the liquid crystal panel, a light guide plate having the lamp disposed at least at one side thereof, and a birefringence optical sheet disposed between the liquid crystal panel and the light guide plate, and having a first prism pattern with a first refractive index, the pattern facing the liquid crystal panel, and a second prism pattern with a second refractive index higher than the first refractive index, the pattern facing the light guide plate.12-31-2009
20100208170SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A surface light source device has a surface-shaped light source having a light emission surface, a first prism sheet at a side of the light emission surface, and a second prism sheet in an opposite side from the surface-shaped light source with the first prism sheet interposed therebetween. The first prism sheet includes prisms having a greater length in a longitudinal direction and having an apical angle between 72 and 100 degrees which are arranged on a surface facing the surface-shaped light source. The second prism sheet includes prisms having a greater length in a longitudinal direction and having an apical angle between 100 and 125 degrees which are arranged on a surface facing a direction opposite the surface-shaped light source. The first and second prism longitudinal direction form an angle of 15 degrees or less, when the first and second prism sheet are viewed in a perpendicular direction.08-19-2010
20080239203SPATIAL LIGHT MODULATOR DISPLAY - An optical device (10-02-2008
20080303980Optical Film with Surface Structure - An optical film with a surface structure includes one surface of a substrate comprising a plurality of light control elements with their longitudinal axes arranged approximately parallel to each other, in which each element includes an independent peak formed by two inclined faces and the two inclined faces between each two independent peaks are connected to each other to form an independent valley; heights of the independent peaks are periodically varied; a virtual connecting line of summits of the independent peaks varied from high to low or from low to high is a straight line, a spacing interval between the independent valleys is varied in a geometric ratio with the height of the independent peak.12-11-2008
20120293745BACKLIGHT UNIT - A backlight unit according to embodiment comprise of a frame, a light emitting device module disposed on a side of the frame and a plurality of light guide members disposed in the direction of the light irradiated from the light emitting device, wherein the light guide members have light transmissivity and reflectivity different from each other.11-22-2012
20090033832BACKLIGHT MODULE AND APPLICATION THEREOF - A backlight module and an application thereof are disclosed. The backlight module comprises at least one light source and a light guide plate. The light guide plate is disposed at one side of the light source, wherein the light guide plate has a reducing region formed at one side of the light guide plate and close to the light source. The thickness of the light guide plate in the reducing region is decreased with the increasing distance away from the light source. The backlight module is applicable to a liquid crystal display (LCD) apparatus.02-05-2009
20100271568BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY - Disclosed herein are a backlight assembly and a liquid crystal display (LCD) having the same, wherein the backlight assembly includes a light guide panel having a plurality of lateral sides; and a plurality of light source units each emitting light to a respective lateral side of the plurality of lateral sides, wherein at least two lateral sides of the plurality of lateral sides, which receive light emitted from two respective light source units of the plurality of light source units, are neighboring lateral sides, and wherein at least one lateral side is longer than an incident surface which receives light emitted from the light source unit.10-28-2010
20110267563LIGHT GUIDE, SURFACE LIGHT SOURCE DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A light guide of the present invention is excellent in luminance uniformity and can have a reduction in the number of components and a reduction in production cost. The light guide of the present invention includes a main body of a light guide plate having a light incident plane and a light exit plane, and a distance maintaining section (11-03-2011
20090185109LIQUID CRYSTAL DISPLAY - A liquid crystal display capable of improving display quality while achieving a reduction in manufacturing cost. The liquid crystal display includes a liquid crystal panel having multiple pixels arranged at a first pitch; a light source for supplying light to the liquid crystal panel; and a light guide plate for guiding the light to the liquid crystal panel, wherein prisms are formed on the light guide plate at a second pitch, the second pitch is the sum of a quotient and a corrected value, the quotient is obtained by dividing the first pitch by a natural number m, the corrected value depends on a selected viewing distance and an interval between the liquid crystal panel and the prisms.07-23-2009
20090185108POLARIZER AND DISPLAY DEVICE HAVING THE SAME - A polarizer and a display device having the polarizer. The polarizer includes a polarization layer, a support layer formed on at least one side of the polarization layer, and a diffusion adhesive layer formed on the polarization layer which diffuses light incident from the polarization layer and prevents a diffused reflection of light incident from an opposite direction of the polarization layer.07-23-2009
20090059130Backlight device for liquid crystal display and method of fabricating the same - A backlight device for a liquid crystal display includes a substrate, and a plurality of white, red, green, and blue light emitting diodes arranged on the substrate.03-05-2009
20090059128Prism sheet having inclined ridges and liquid crystal display using the same - A prism sheet includes a transparent base film with first and second surfaces and an optical refracting part with a plurality of prism units on the second surface, wherein the prism units are integral with the transparent base film, each prism unit having a predetermined height and extending along a first direction on the second surface of the transparent base film, wherein each prism unit includes a ridge extending along the first direction, a distance along a normal between the second surface of the transparent base film and the ridge defining the predetermined height of the prism unit, and wherein at least two prism units include ridges inclined at a predetermined angle other than zero with respect to the second surface of the transparent base film, the inclined ridges being unevenly distributed on the second surface of the transparent base film.03-05-2009
20090015755Liquid crystal display device - A side type light emitting diode (LED) liquid crystal display (LCD) includes a prism light guide panel in a side type LED backlight to allow scanning and divisional driving to improve motion blur of video or an overall sharpness of an image. The side type LED LCD includes: a lower cover; first and second prism light guide panels disposed in a plurality of layers on the lower cover, ridges of prism mountains formed on the first prism light guide panel being substantially perpendicular to ridges of prism mountains formed on the second prism light guide panel; lamp units being provided on at least one side of each prism light guide panel along the ridges of the prism mountains; and a liquid crystal panel separated from the prism light guide panels that receives light transmitted through the first and second light guide panels emitted from the light units.01-15-2009
20090015754LIGHT EMITTING DIODE DEVICE AND APPLICATIONS THEREOF - A light emitting diode (LED) device and the applications are provided, wherein the LCD device comprises a light emitting direction and a cross-section perpendicular to the light emitting direction, wherein the cross-section has a first height perpendicular to the light emitting direction and a light emitting area having a second height perpendicular to the light emitting direction, the second height is substantially shorter than 70% of the first height.01-15-2009
20090213299DISPLAY DEVICE - A display device includes a light guide plate which includes a light transmission portion and an antireflection portion at two opposite end faces and which is provided with a light extraction portion in part of a surface, respective light sources which are arranged on outer sides of the two opposite end faces, a transmission liquid crystal panel located adjacent to the light extraction portion, and a synchronous drive unit that alternately turns ON the light sources and that displays an image that is synchronous with an alternating turn-ON operation of the transmission liquid crystal panel.08-27-2009
20090213298OPTICAL MODULATING DISPALY DEVICE AND PRODUCTION METHOD THEREFOR AND DISPLAY APPARATUS MOUNTING THE OPTICAL MODULATING DISPLAY DEVICE THEREON - The present invention relates to an optical modulating display device (08-27-2009
20110141400LIQUID CRYSTAL DISPLAY DEVICE - An LCD device is disclosed. The disclosed LCD device includes: a liquid crystal display panel configured to display images; a backlight unit configured to include a light source provided for emitting light and optical sheets provided for improving optical characteristics of light which is emitted by the light source; a bottom cover with a receiving portion configured to receive the liquid crystal display panel and the backlight unit; and a heat guide member disposed on a front surface of the receiving portion of the bottom cover and configured to guide the heat generated in the light source toward the liquid crystal display panel.06-16-2011
20090051852BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY USING THE SAME - A backlight module including a light guide plate, a light source and a transparent elastomer is provided. The light guide plate has a first light emitting surface, a bottom surface opposite to the first light emitting surface and at least a light incident surface contacting the first light emitting surface and the bottom surface. The light source is disposed adjacent to the light incident surface and includes a circuit board and a plurality of light emitting diode devices. Each of the light emitting diode devices is capable of emitting light passing through the light incident surface. The light emitting diode devices are electrically connected to the circuit board. The transparent elastomer is disposed between the light incident surface and each of the light emitting diode devices.02-26-2009
20090167990Liquid Crystal Display Appliance - An object of the present invention is to provide a liquid crystal display appliance for controlling a plurality of divided area in the display screen. In order to achieve the above object, the liquid crystal display appliance according to the present invention includes a lighting apparatus which includes a light source, and an light guide plate to diffuse lights from the light source to obtain a surface light source; and a liquid crystal panel which is placed opposed to the lighting apparatus and includes a liquid crystal layer. The light guide plate is made by bonding a plurality of transparent light guide members each of which has a different refractive index greater than 1.07-02-2009
20110141401BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit being scan-driven is discussed. The backlight unit according to an embodiment includes light sources configured to emit light, and a light guide plate disposed parallel to the light sources and configured to convert spotted lights entered from the light sources into two-dimensional light. The light guide plate includes a plurality of air barriers arranged at a fixed interval and configured to guide lights from the light sources in blocks with a width of the fixed interval.06-16-2011
20090213300SURFACE LIGHT SOURCE CAPABLE OF CHANGING RANGE OF SPREAD ANGLE OF EXIT LIGHT, AND LIQUID CRYSTAL DISPLAY APPARATUS USING THIS SURFACE LIGHT SOURCE - A surface light source includes first and second light sources that emit lights, and an optical deflection element. The optical deflection element changes light emitted from the first light source into first illumination light having a maximum value of an exit light intensity present in a direction parallel to a normal line of the surface light source, a spread angle range, and high directivity in a direction of the normal line and allows the changed light to exit therefrom. The optical deflection element also changes light emitted from the second light source into second illumination light having a maximum value of an exit light intensity in an oblique direction inclined at an angle with respect to the normal line and a spread angle range wider than that of the first illumination light and allows the changed light to exit therefrom.08-27-2009
20090213301BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY - A backlight apparatus of a sidelight type includes a light guide plate having an incident face on a lateral face and a light source unit having a plurality of substrates. The plurality of the substrates are respectively disposed on the incident face side of the light guide plate such that each of substrate faces of the substrates is parallel with a light exit face of the light guide plate, and the substrates are adjacent to one another in a thickness direction of the light guide plate. A plurality of light emitting devices that emit light along the substrate faces are mounted in columns on each of the substrate faces of the plurality of the substrates such that emitting directions of the light emitting devices are directed to the incident face.08-27-2009
20090316077LIGHT GUIDE BLADE WITH COLOR BALANCING STRUCTURES AND BLUE ABSORPTION COMPENSATION FOR LARGE SCREEN LED BACKLIGHT UNIT - One or more embodiments of the present invention provide apparatuses, methods and systems to form a thin LED backlight unit for a large-screen flat-panel display. The backlight unit is able to achieve improved color mixing within a shorter mixing distance than the conventional art, while maintaining desired brightness uniformity, thereby allowing for a shorter bezel of a display device. One or more embodiments of the present invention include one or more light guides, which, by operating together, provide thin backlight units. High system efficiency is provided by introducing a recycling enhancement component, and uniform color distribution is achieved by incorporating color shift compensation. Multiple light guides are arranged adjacent to one another can offer a progressive scan illumination feature.12-24-2009
20090316075Dual liquid crystal display device - A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.12-24-2009
20090316074LIGHT SOURCE DEVICE, BACKLIGHT DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A light source device having light guide elements (12-24-2009
20100002169UNITARY LIGHT GUIDE PLATE, LIGHT GUIDE PLATE UNIT, PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A unitary light guide plate includes a light exit plane, a thick portion located substantially on a center portion of the light exit plane, thin end portions formed on both sides of the thick portion, a half portion of a parallel groove formed on a backside of the light exit plane to accommodate linearly arranged light sources, inclined back portions arranged so as to become thinner from the thick portion to the thin end portions, and scattering means for scattering light entering from the light sources accommodated in the parallel groove into the thin end portions and propagated through the inclined back portions toward the thick portion. A light guide plate unit has two or more of the unitary light guide plates coupled together in such a way that respective light exit planes are arranged to form a same plane.01-07-2010
20100165252BACKLIGHT OF LIQUID CRYSTAL DISPLAY DEVICE - In a backlight of a liquid crystal display device, the screen of a liquid crystal panel is divided into a plurality of rectangular regions, an edge-light type light guide plate is provided corresponding to each of the rectangular regions, and a plurality of LEDs are provided on the end face of each edge-light type light guide plate. The brightness of the image displayed on each of the rectangular regions is obtained based on an image signal, and, based on the brightness, the brightness of the plurality of LEDs corresponding to each of the rectangular regions is controlled. Accordingly, the power consumption can be reduced as compared with the case where the entire liquid crystal panel is illuminated with uniform brightness. Furthermore, the edge-light type light guide plate is used to allow a decrease in number of the LEDs and the wiring arrangements.07-01-2010
20100182542LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device including: an, optical switching member; a light guide panel; and a light source, the light guide panel including, on at least one of a front surface and a back surface thereof, a plurality of surface structures including: a first raised surface extending outward being formed as a free surface; a first light reflection surface entering inside from the first raised surface; a second light reflection surface extending outside from the first light reflection surface; and a second raised surface which continues from the second light reflection surface and is formed as a free surface, whereby a liquid crystal display device may be obtained, which includes a thin light guide panel with a thickness of, for example, 1 mm or less.07-22-2010
20100182540LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device including a thin light guide plate and, capable of preventing light leakage from light sources is provided. The light guide plate is formed of a sheet. On a back face of the light guide plate, a first projection and a second projection that protrude outwardly and a reflection face provided between the first projection and the second projection are provided. The light sources are disposed on a side face of the light guide plate. A light entering portion is disposed on the side face where the light source is provided. A thin film portion is included between the light sources adjacent to each other in the light entering portion.07-22-2010
20100182539BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY - A plurality of LEDs (07-22-2010
20100188610Area active backlight with steerable light source - A liquid crystal display includes a backlight. The backlight includes a plurality of waveguides to selectively direct light. A set of selection elements in combination with the backlight selectively direct light to the front of the display.07-29-2010
20100253883LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device, wherein the backlight has a light guiding plate, a first light source group made up of light sources aligned along a first side of the light guiding plate and a second light source group made up of light sources aligned along a second side that faces the first side, the first light source group has a first region where the distance between adjacent light sources is a first distance and a second region where the distance between adjacent light sources is a second distance that is smaller than the first distance, the second light source group has a third region facing the first region and a fourth region facing the second region, the third distance between adjacent light sources in the third region is smaller than the fourth distance between adjacent light sources in the fourth region, and semiconductor devices are positioned so as to face the first region.10-07-2010
20110109844BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - A backlight unit and a liquid crystal display including the same are provided. The backlight includes a light guiding plate, a reflector, and at least one LED assembly including an LED light source, a substrate, and a support plate. A plurality of protrusions formed on a cover of the liquid crystal display are configured to mate to a plurality of concave portions formed on the light guiding plate, the reflector, and the LED assembly to mount the various components of the liquid crystal display onto the cover.05-12-2011
20100253881Backlight unit and liquid crystal display using the same - A backlight unit capable of improving contrast properties by implementing a local dimming method while making the backlight unit slim, and a liquid crystal display using the same are provided. The backlight unit includes a first light guide plate array including a plurality of first light guide plates arranged in parallel in a first direction to define a first light guide channels; a second light guide plate array including a plurality of second light guide plates arranged in parallel in a second direction intersected with the first direction to a second light guide channels; a first light array arranged near at least one end of the first light guide plate array to illuminate light to the at least one end of the first light guide plate array; and a second light array arranged near at least one end of the second light guide plate array to illuminate light to the at least one end of the second light guide plate array.10-07-2010
20100253882BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY USING THE SAME - A backlight unit comprises: a first light guide plate comprising intaglio patterned lines formed along a first direction thereon to define light guide channels in the first direction; a second light guide plate disposed under the first light guide plate and comprising intaglio patterned lines formed thereon along a second direction crossing the intaglio patterned lines of the first light guide plate to define light guide channels in the second direction; first light sources disposed to face the side of the first light guide plate and irradiating light to the light guide channels of the first direction; and second light sources disposed to face the side of the second light guide plate and irradiating light to the light guide channels of the second direction.10-07-2010
20120188485BACKLIGHT UNIT WITH CORNER LIGHT SOURCE - A backlight unit having a corner light source unit includes an optical unit having an optical sheet stacked on a bottom sash, and a liquid crystal display panel stacked on the optical sheet, and a light source unit located at the bottom sash to allow radiated light to be transferred to the liquid crystal display panel via two surfaces of the liquid crystal display panel.07-26-2012
20100220264LIQUID CRYSTAL DISPLAY DEVICE AND MOBILE ELECTRONIC DEVICE USING THE SAME - There is provided a liquid crystal display device which can easily be made thin and which is capable of high-quality displaying, as well as a mobile electronic device having the same.09-02-2010
20090273734Structure of light emitting device array - A LCD backlight with mosaic structure is provided. Each of the backlight unit blocks comprises light sources, light guide plate, electric controlling circuitry and mechanical interfacing features.11-05-2009
20090073347Liquid crystal display device - In a backlight which arranges light emitting diodes on a side surface of a light guide plate, even when the light emitting diodes having a thickness larger than a thickness of the light guide plate are used, it is possible to manufacture the light guide plate with high accuracy by injection molding. In a liquid crystal display device having a backlight which radiates light to a liquid crystal panel, LEDs are mounted on the light guide plate formed on the backlight as a light emitting element, and an S-shaped inclined portion whose thickness is not changed is formed on the light guide plate from a light incident surface to a light emitting surface of the light guide plate. Since the thickness of the inclined portion is not changed, it is possible to make the pressure of resin flow at the time of performing injection molding uniform thus manufacturing the light guide plate with high accuracy.03-19-2009
20090073345LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display including a liquid crystal display panel formed by sandwiching a liquid crystal layer between an active matrix substrate and a counter substrate, and a backlight system that illuminates the liquid crystal display panel from the active matrix substrate side, an optical sensor for detecting the intensity of ambient light is provided in a peripheral region of a display region in a substrate surface of the active matrix substrate on the liquid crystal layer side. The optical sensor is located near the outer edge of the display region that is perpendicular to the direction (X direction) in which the directivity of emitted light of the backlight system is highest.03-19-2009
20090322989Liquid crystal display - The liquid crystal display includes: a liquid crystal panel; a backlight unit that includes a light guide plate that is positioned at a lower part of the liquid crystal panel and that guides light emitted from a light source in a direction of the liquid crystal panel, and a plurality of optical sheets that provide light emitted from the light guide plate to the liquid crystal panel; and a plurality of step parts that are formed from a base surface to an upper surface in order to receive the liquid crystal panel and the backlight unit, wherein a step part facing the liquid crystal panel among the plurality of step parts includes a main support having an area patterned to be apart from the liquid crystal panel.12-31-2009
20090115938Liquid Crystal Display Device - A light guiding plate is manufactured with high precision and in a short period of time in a backlight where light emitting diodes are provided on the side of the light guiding plate, even in the case where the light guiding plate is formed so as to have a spherical surface. In a liquid crystal display device having a backlight for illuminating a liquid crystal panel with light, LED's are provided in a light guiding plate in the backlight as a light emitting element, the light emitting portion of the light guiding plate is formed so as to have a spherical surface by applying heat and pressure to a resin in sheet form, and the light guiding plate is manufactured by fusing a light entering portion formed of a resin through injection molding with the light emitting portion.05-07-2009
20090316076ELECTRODE FOR COLD CATHODE TUBE, AND COLD CATHODE TUBE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An electrode (12-24-2009
20090167988LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display (LCD) device having light scattering patterns at an edge region of a light guide plate, capable of preventing a hot spot phenomenon occurring when an edge-type backlight unit is implemented with using light emitting means such as light emitting diodes (LED). The LCD device comprises: an LC panel; a light guide plate disposed below the LC panel, and having light scattering patterns formed in a plurality of groups with a constant gap therebetween at one or more edge regions on an upper surface thereof; and light emitting devices disposed at a side wall of the light guide plate, each light emitting device disposed to correspond to a region between the light scattering patterns, for emitting light.07-02-2009
20090109373Liquid Crystal Display - In a liquid crystal display equipped with a side edge backlight device, visualization of “a dot provided to a light guide plate” in the vicinity of the light source while keeping the luminance of the display screen. The shapes and the arrangement of the light diffusing dots (dots) provided to the principal surface of the light guide plate of the backlight device are made different between the area of the principal surface in the vicinity of the light source and the other areas, thereby adjusting the whiteness of the light guide plate in the vicinity of the light source. The plurality of dots formed in the vicinity of the light source are each composed of a first section for diffusing the light propagating the light guide plate, and a second section surrounded by the first section and less capable of diffusing the light, and are disposed in the vicinity of the light source in a zigzag manner.04-30-2009
20100182541Backlight Unit and a Liquid Crystal Display Apparatus Applying the Same Therein - A backlight unit, being thin-sized, but having high definition and high uniformity of luminance, and a video display apparatus applying the same therein, has a plural number of sets of at least one or more of light source(s) (07-22-2010
20130135561ILLUMINATING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE - Provided is an illuminating device capable of preventing luminance unevenness from developing therein. An illuminating device (05-30-2013
20100302480EDGE LIT LOCALLY DIMMED DISPLAY - An edge lit locally dimmed display has a spatial light modulator illuminated by a light source. The light source is positioned at an edge and behind the spatial light modulator. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.12-02-2010
20110122340LIQUID CRYSTAL DISPLAY AND ASSEMBLY THEREOF - The present invention is broadly directed towards a receiving container for an LCD apparatus for securing a lamp and lamp wiring connected to a lamp. The receiving container has features for substantially preventing the lamp wiring from being disconnected from the lamp. For example, a first through-hole for receiving the lamp wiring, a first trench, securing members, and securing projections are utilized to substantially prevent lamp wiring from being disconnected from a lamp. Additionally, the LCD apparatus is easily handled, dissipates heat effectively, and has a light weight.05-26-2011
20110025950LIGHT GUIDE PLATE AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A light guide plate for a backlight unit of a liquid crystal display device includes one side surface where light from a first light source is incident; the other side surface opposite to the one side surface; a front surface combining the one and the other one side surfaces; and a rear surface including a plurality of light guide patterns, each of the plurality of light guide patterns including a protruding portion and a groove portion, wherein one of the protruding portion and the groove portion is positioned at a center of the other one of the protruding portion and the groove portion.02-03-2011
20100134722BACKLIGHT MODULE AND DISPLAY DEVICE USING THE SAME - A backlight module includes: a light guide plate including a light-entering surface; a light source module disposed beside the light-entering surface; and a reflector including an opening adjacent to the light-entering surface. The light source module is disposed in the reflector and emits light toward the light-entering surface through the opening. A height of the opening is less than a thickness of the light guide plate.06-03-2010
20110242458LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device, including: alight guide plate; first light-emitting diodes and a first connector, which are opposed to a first side surface of the light guide plate; a first substrate on which the first light-emitting diodes and the first connector are mounted; second light-emitting diodes and a second connector, which are opposed to a second side surface of the light guide plate, the second side surface being on a side opposite to the first side surface; and a second substrate on which the second light-emitting diodes and the second connector are mounted, in which: the first connector is opposed to any one of the second light-emitting diodes; the second connector is opposed to any one of the first light-emitting diodes; and the first connector and the second connector are disposed without being opposed to each other.10-06-2011
20090103009Liquid crystal display and light guide plate - A large liquid crystal display (04-23-2009
20110085112ULTRA-THIN BACKLIGHT - A thin-profile, optically efficient lighting device for use with, among other things, flat information displays, includes a combination of two optically coupled light propagating structures. The first structure may be a compound hyperbolic-elliptic element, adapted to receive light from at least one light source, such as a light emitting diode, and inject it into the second structure, which generally is larger and has hyperbolic-elliptic shape and a plurality of flux extractors. The latter redirect the light flux so that it propagates out of the second structure with a desired luminance and/or intensity distribution in a direction that is essentially perpendicular to the surface of the second structure. The flux extractors may also be of the active, i.e. wavelength-converting, type.04-14-2011
20090257002COMPOSITE POLARIZING SHEET AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME - A liquid crystal display (“LCD”) includes an LCD panel including a polarizing plate disposed on at least one surface thereof, a light guide plate (“LGP”) disposed below the LCD panel and including reflective patterns which reflect light incident on the LGP toward the LCD panel, and a composite polarizing sheet disposed between the LCD panel and the LGP and including; a surface layer having a plurality of prism patterns which extend in a first direction and which are arranged substantially parallel to each other, and a reflective polarizing layer having a transmission axis oriented in a second direction other than the first direction, wherein the second direction is one of substantially parallel to or perpendicular to a polarizing axis of the polarizing plate.10-15-2009
20090322987CHANNELIZED 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
20100053503Backlight unit and liquid crystal display device including the same - A backlight unit for a liquid crystal display panel includes a lamp, a plurality of optical sheets, a light guide that guides light from the lamp toward the optical sheets, and a reflector facing a rear surface of the light guide. The light guide includes a first plurality of geometric shapes at the rear surface thereof that substantially directs the light incident on the light guide toward the optical sheets, and a second plurality of geometric shapes at a peripheral portion of the rear surface thereof to prevent the reflector from sticking to the light guide, a density of the second plurality of geometric shapes is less than the density of the first plurality of geometric shapes.03-04-2010
20100053504BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - A backlight assembly includes a light guide plate and a light-emitting module. The light guide plate guides light. The light-emitting module is disposed to face an incidence surface of the light guide plate. The light-emitting module includes a printed circuit board (PCB) vertically disposed to face the incidence surface and a plurality of LEDs mounted on the PCB to emit light toward the incidence surface. Each of the LEDs includes a blue chip emitting blue light, a red fluorescent substance and a green fluorescent substance for converting the blue light into white light. Therefore, a thickness of the backlight assembly is reduced and an LED-mounting stability of the LED is improved.03-04-2010
20100231827LIQUID CRYSTAL DISPLAY APPARATUS AND ILLUMINATING APPARATUS THEREFOR - An LCD apparatus includes an LCD panel to display an image and an LED backlight to illuminate the LCD panel from behind. The LCD panel has first sections divided in a vertical direction and second sections divided in a horizontal direction. The LED backlight includes an LED light source and an edge-type light guide. The LED light source includes LEDs that are arranged along at least one of upper and lower sides of the light guide and are allocated to the second sections, respectively. A brightness of an image displayed in a given second section is used to control a light quantity of the corresponding LED. Each LED radially emits light so that light beams from adjacent ones of the LEDs intersect each other.09-16-2010
20100134721OPTICAL MEMBER UNIT, LIGHTING DEVICE FOR DISPLAY, DISPLAY, AND TELEVISION RECEIVER - An optical member 06-03-2010
20110075071METHOD FOR MANUFACTURING A LIGHT GUIDE FOR A BACKLIGHT MODULE IN A LCD MODULE - A method of manufacturing a light guide for a backlight module in a liquid crystal display module is provided. The method includes the following steps: providing a foil; and pressing the foil at a first temperature above a glass transition temperature of a material of the foil to form a thickness profile of the light guide.03-31-2011
20110043724Backlight unit and display device using the same - The backlight unit comprises a bottom cover, a light guide plate on which a reflection layer is disposed on at least one side surface thereof, the light guide plate being disposed on an inside of the bottom cover, and a light emitting module disposed on at least one side surface of the light guide plate.02-24-2011
20110001901DUAL LIGHTGUIDE - A backlight subsystem includes first and second lightguides separated by an interfacial layer. The first lightguide has an output surface oriented toward an associated first illumination field, a back surface, and at least one light input edge. The second lightguide has output surface oriented toward an associated second illumination field, a back surface, and at least one light input edge. An interfacial layer is arranged between the back surfaces of the first lightguide and the second lightguide. The interfacial layer is substantially optically non-absorbing and may be predominately optically transmissive or predominately optically reflective.01-06-2011
20110255033Liquid Crystal Display Device - A liquid crystal display device includes a light guide plate, a light source module, a first tape, a circuit board holder and an elastic support piece, an optical film, a panel, and an elastic buffer piece. By implement of the liquid crystal display device of this invention, the thickness and the weight of the liquid crystal display device can be reduced.10-20-2011
20090231513ILLUMINATING DEVICE AND DISPLAY USING THE SAME - An illuminating device achieves higher brightness by improving the utilization efficiency of light from a light source in an illuminating device for emitting plane-shaped light. The backlight device includes a light guide member, and LED units facing side surfaces of the light guide member, and propagates light that is emitted by the LEDs and made incident to the side surfaces in the light guide member so as to emit plane-shaped light from a first main surface of the light guide member. The backlight device includes an insulating reflective member placed outside a second main surface of the light guide member facing the first main surface, and a metal reflective sheet laminated on the insulating reflective sheet on the side opposite to the light guide member.09-17-2009
20120200807LIQUID CRYSTAL DISPLAY WITH COLOR LIGHT GUIDE PANEL - An LCD including a backlight module and an LCD panel is provided. The LCD panel includes a color light guide panel, suitable for differentiating an incident light into multiple color lights. The color light guide panel includes a substrate and a color light output structure. The substrate has multiple pixel regions, and the color light output structure is disposed in each of the pixel regions. The color light output structure includes first˜fourth nano-patterns. The incident light is scattered by the first nano-pattern for producing a first color light, scattered by the second nano-pattern for producing a second color light, scattered by the third nano-pattern for producing a third color light, and scattered by the fourth nano-pattern for producing a fourth color light. The color light guide panel can output uniform and high luminous first˜fourth color light, and the LCD can display high quality image.08-09-2012
20100321612PLANAR LIGHTING APPARATUS AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - Provided are a planar lighting apparatus which can perform display without luminance nonuniformity and with a specified luminance distribution in a scanning direction and has high luminance and a large area, and a liquid crystal display device using such a planar lighting apparatus. The scanning light quantity of scanning light 12-23-2010
20080252818LIQUID CRYSTAL DISPLAY AND BACKLIGHT MODULE THEREOF - A backlight module including a frame, a plurality of light guide plates, a plurality of high refractive mediums, and a plurality of light sources is provided. The light guide plates are disposed within the frame and each of the light guide plates has at least one light incident surface and at least one light emitting surface. Additionally, high refractive mediums are disposed between two neighboring light guide plates. Moreover, the light sources are disposed beside the light incident surfaces of the light guide plates.10-16-2008
20080204631Surface light source device and display - Overlapping first and second light guide plates have incidence faces located opposite to each other. Each light guide plate has an emission restraint region, an emission gradually-increasing region and an emission promotion region arranged in order from incidence face toward distal end face. In each emission gradually-increasing region, emission light quantity increases gradually away from each emission restraint region toward each emission promotion region. The emission gradually-increasing regions of the light guide plates overlap each other. The emission promotion region of the second light guide plate overlaps with the emission restraint region of the first light guide plate while the emission restraint region of the second light guide plate overlaps the emission promotion region of the first light guide plate. Light from LEDs is limited by windows. Color-mixing of the LED-light occurs in each emission restraint region to become whitened light gaining emission intensity in the emission promotion regions.08-28-2008
20110164204Backlight Device for Liquid Crystal Display and Method of Fabricating the same - A backlight device for a liquid crystal display includes a substrate, and a plurality of white, red, green, and blue light emitting diodes arranged on the substrate.07-07-2011
20110134371ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE PROVIDED WITH THE SAME - Provided is an illuminating device wherein generation of luminance deterioration and luminance nonuniformity is suppressed. An illuminating device (06-09-2011
20110134369BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - Disclosed is a backlight unit provided with an improved external appearance and uniform brightness is disclosed. The backlight unit includes a light source, and a light guide plate configured to primarily and secondarily reflect light from the light source and to convert the reflected light into two dimensional light. One side portion of the light guide plate is formed to provide an undercut space enough to accommodate the light source.06-09-2011
20090257001Transparent substrare illumination device, and liquid crystal display device - A transparent substrate 10-15-2009
20100110340DISPLAY - A display comprises: a transmissive pixellated spatial light modulator (05-06-2010
20100110339LIGHT EMITTING ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE - A light emitting element (05-06-2010
20100110338LCD and Light Guide Plate Thereof - A light guide plate includes an incident face, a bottom surface, a main reflective structure and an auxiliary reflective structure. The bottom surface is connected to the incident face. The main reflective structure is disposed on the bottom surface and has a first and a second inclined surface. The auxiliary reflective structure is disposed on the bottom surface and has a third and a fourth inclined surface. The auxiliary reflective structure and the main reflective structure have an interval therebetween, in which the interval ranges between 0.2 micrometer and 0.5 micrometer, and a bottom width of the auxiliary reflective structure on the bottom surface is smaller than a bottom width of the main reflective structure on the bottom surface. A liquid crystal display is also disclosed herein.05-06-2010
20100214509LIGHT GUIDE PLATE, SURFACE-EMITTING APPARATUS, LIQUID CRYSTAL DISPLAY APPARATUS, AND METHOD OF PRODUCING A LIGHT GUIDE PLATE - A light guide plate includes a light-emitting surface, a light-reflecting surface opposed to the light-emitting surface, and a light-incident surface including a protrusion formed continuously along an edge portion of the light-emitting surface. Accordingly, light that has entered the protrusion is transmitted through the protrusion and totally reflected on an inner surface of the light-emitting surface to thus propagate inside the light guide plate. As described above, since incident light components emitted toward an upper portion of the light-incident surface can be effectively blocked by the protrusion, luminance distribution characteristics as well as a light use efficiency can be improved. The light guide plate is produced by a punching press process.08-26-2010
20080218661Liquid crystal display having flexible printed circuit sandwiched between liquid crystal panel and light guide plate thereof - A liquid crystal display includes a liquid crystal panel and a backlight module parallel to the liquid crystal panel. The backlight module includes a light guide plate, a light source and a flexible printed circuit. The light guide plate includes a light incident surface. The light source is provided adjacent to the light incident surface of the light guide plate. The flexible printed circuit includes a light source driving end. The light source driving end is electrically connected with the light source. The light source driving end is bent and is sandwiched between the liquid crystal panel and the light guide plate. The light source driving end abuts the light guide plate.09-11-2008
20080218660Liquid crystal display module - In a liquid crystal display module of edge light system, a periphery of a liquid crystal panel, a light guide plate and a reflective sheet are laid one upon another and surrounded by a case, and a lamp and a reflecting plate are disposed between an incidence surface of the light guide plate and a side of the case. A rear side of the module is not covered by the case. The reflecting plate is of a groove type that the lamp is held in the groove while an opening of the groove is opposed to the incidence surface. The case has an opening formed in a predetermined side of the case. The reflecting plate is insertable through the opening. The reflecting plate is slid from the opening while a reflecting plate bottom is in abutment against a side of the case, thereby being detachably attachable.09-11-2008
20100195023BACKLIGHT DEVICE FOR LIQUID CRYSTAL DISPLAY - A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 08-05-2010
20100195022LIQUID CRYSTAL DISPLAY BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY - It is aimed to provide an LCD backlight device and liquid crystal display that can suppress light quantity loss and ensure uniform brightness.08-05-2010
20110261291TRANSPARENT DISPLAY DEVICE - Disclosed is a transparent display device for enhancing image quality, and the transparent display device may include liquid crystal display panel; a light source disposed at one side of a lower portion of the liquid crystal display panel to emit light; a first polarizing plate to first-polarize the light emitted from the light source; a light guide plate at a lower portion of the liquid crystal display panel to receive the light first-polarized by the first polarizing plate through a lateral surface thereof, a pattern being formed on the upper surface of the light guide plate to output the incident first-polarized light in a lower direction of the light guide plate; a second polarizing plate at an upper portion of the liquid crystal display panel to control the amount of light transmitting the liquid crystal display panel; and a first optical sheet at a lower portion of the light guide plate to reflect the first-polarized light received from the light guide plate, and transmit a second polarization component of natural light received from the lower portion thereof.10-27-2011
20100026933SECONDARY DISPLAY USING PDLC - A secondary display is provided on, in, or under the case of an electronic device at a location convenient for viewing. The secondary display includes PDLC and a backlight. The backlight is preferably either an electroluminescent panel or an array of light emitting die. In the latter case, a transflector is located between the light source and the PDLC.02-04-2010
20100020268BACKLIGHT APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS - A backlight apparatus is provided that enables a balance of brightness to be maintained and long life to be achieved over the entire area of a display screen. Light guide plate 01-28-2010
20120147295BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME, AND LIGHT-EMITTING DIODE USED THEREFOR - There are provided light-emitting layer provided on transparent substrate and emitting light of a specific wavelength, first reflecting layer formed on a light exit side relative to light-emitting layer and including a function of reflecting light emitted from light-emitting layer, second reflecting layer provided on a side of substrate in a manner to interpose light-emitting layer between first reflecting layer and second reflecting layer; light diffusion layer that diffuses light emitted from light-emitting layer is disposed between first reflecting layer and second reflecting layer;06-14-2012
20120147294Backlight Unit and Liquid Crystal Display Device Using the Same - “A backlight unit having a LED light source which includes a light guide plate partitioned in areas having a tapered shape formed of a thick and thin portion. The light guide plate forms a thick and thin portion repeated at certain intervals, and the repeated thick portions and the repeated thin portions gradually decrease in thickness. The LED light source is attached to a lateral side of thick portions. Grooves are formed in the light irradiation direction of the LED light source and in a direction perpendicularly intersecting the light irradiation direction. Each of the grooves is formed in an concave shape. There is a relation 0.2/30<=W/D<0.1 where D denotes the distance between the light guide plate and a light diffusion plate, and W denotes the width of each of the grooves. An inclination angle 0 relative to the center of each of the grooves is between 9 and 15 degrees inclusive.06-14-2012
20110051046OPTICAL SHEET, BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME AND METHOD OF FABRICATING OPTICAL SHEET - Disclosed is to decrease a fabrication cost and reduce a thickness of a liquid crystal display device by processing light transmitted through a liquid guide plate by virtue of a single optical sheet, the optical sheet including a base film, a plurality of prism patterns extending from one side to another side of the base film, and refraction layers between the prism patterns, thereby totally reflecting light incident from the light guide plate to be supplied to a liquid crystal display panel.03-03-2011
20110051045Backlight Unit And Display Apparatus Including The Same - A backlight unit may be provided that includes a substrate, light sources, a light guide plate, at least one reflecting member, and an optical sheet. The light sources may be on the substrate. The light guide plate may include a light incident part having a light incident surface to which streaks of light respectively emitted from the light sources are laterally incident, and a light emitting part emitting the incident streaks of light upward. The reflecting member may be disposed on a lower surface of the light guide plate, and may reflect the incident light. The optical sheet may be disposed above the light guide plate. The reflecting member may include a first region having a first reflectance and a second region having a second reflectance.03-03-2011
20110109843LIGHT GUIDE PANEL, BACKLIGHT UNIT AND DISPLAY APPARATUS - A light guide panel, a backlight unit and a display apparatus are provided. A display apparatus includes a light guide panel including a first surface having a first pattern that increases luminance of backlight emitted from a light emitting unit, and a second surface having a second pattern that increases uniformity of luminance of the backlight emitted from the light emitting unit.05-12-2011
20110063543LIQUID CRYSTAL DISPLAY DEVICE - Each of plural light source units is formed by combining a light source formed of plural light emitting elements mounted on a wiring substrate with a light guide plate having a side surface serving as a light incident surface. The wiring substrate is attached to the chassis such that the light output surface of the light emitting element is perpendicular to the light emitting element mount surface of the wiring substrate. The wiring patterns each with the larger width than that of the electrode are formed on both upper and back surfaces of the substrate at the portion to which the power feeding electrode of the light emitting element is soldered. They are connected via the through holes which are arranged in plural rows around the electrode.03-17-2011
20120113358DISPLAY APPARATUS AND BACK LIGHT APPARATUS - A back light apparatus according to an embodiment includes: an optical aperture part comprising a plurality of optical apertures arranged in parallel to each other; a light source unit comprising a plurality of line sources, the light source unit configured to generate line-shaped light rays associated with the optical apertures respectively; and a diffusion state switching unit configured to be capable of switching a diffusion state of light illuminated from the light source unit.05-10-2012
20110317100LIGHT EMITTING DIODE AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE WITH THE SAME - A light emitting diode adapted to improve light efficiency is disclosed. The light emitting diode includes: a light emitting chip; a first lead frame loaded with the light emitting chip and configured to include first through fourth tilted surfaces which expand outwardly from a region loaded with the light emitting diode, the first and second tilted surfaces being arranged symmetrically with each other in a first direction and the third and fourth tilted surfaces being symmetrical with each other in a second direction perpendicular to the first direction; a second lead frame separated by a fixed distance from the first lead frame; first and second wires configured to connect the first and second lead frames to the light emitting chip, respectively; and a mold frame configured to encompass the first and second lead frames and to include first and second reflection surfaces, which are arranged symmetrically with each other in the first direction of the first lead frame, and third and fourth reflection surfaces which are arranged symmetrically with each other in the second direction of the first lead frame.12-29-2011
20120044441LIGHTING DEVICE AND DISPLAY DEVICE - Provided is a lighting device (02-23-2012
20120057102BACKLIGHT MODULE - The present invention discloses a backlight module, used for a liquid crystal display apparatus. The backlight module comprises a back plate, positioned at the bottom of the backlight module; a display area being in the liquid crystal display apparatus in accordance with the back plate and overlapping therewith, and the display area has a display area center line; and a plurality of LEDs classified to belong to several bright bins respectively and the display area center line has a center corresponding to the LEDs, wherein the LEDs belonging to a higher bright bin are positioned closer to the center and the LEDs belonging to a lower bright bin are positioned farther to the center. The LED backlight module of the present invention can raise the usage rate of LEDs and reduce the cost efficiently.03-08-2012
20120002139LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device according to the present invention (01-05-2012
20120002138Pattern forming ink composition, light guide plate, light emitting unit and liquid crystal display element having the light emitting unit - The present invention relates to a pattern forming ink composition, and more particularly, to a pattern forming ink composition having high yellowing resistance, wherein the pattern forming ink composition including an acrylate-based resin having a ring structure (A), a compound having at least one ethylenically unsaturated double bond (B) and a photoinitiator (C). The pattern forming ink is printed as a reflection pattern on a light guide plate to scatter and reflect the light incident to the reflection pattern towards a light emitting surface of the light guide plate.01-05-2012
20120008067BACKLIGHT UNIT AND DISPLAY DEVICE INCLUDING THE SAME - A backlight unit and a display device including the backlight unit are provided. The backlight unit includes at least one light source unit and a light guide plate. The light source unit provides collimated light and controls light such that it is emitted in a plurality of light exit directions.01-12-2012
20120206670BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method.08-16-2012
20120026431LIGHTGUIDE WITH OPTICAL FILM CONTAINING VOIDS AND BLACKLIGHT FOR DISPLAY SYSTEM - A lightguide (02-02-2012
20120026430Uniform reflective light-guide apparatus with micro-structure, and backlight module and LCD device having the same - A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.02-02-2012
20120026429Light-guide apparatus with micro-structure, and backlight module and LCD device having the same - A light-guide apparatus for accompanying an edge light source to form a backlight module for an LCD display includes an upper light-distributing layer, a middle light-guiding layer and a lower reflective layer. The light-guiding layer further defines a light-introducing surface for allowing lights emitted from the edge light source to enter the light-guiding layer. The reflective layer reflects the lights back to the light-guiding layer. A light-exiting surface for allowing at least a portion of the lights to leave the light-guiding layer is defined on the top surface of the light-distributing layer and is perpendicular to the light-introducing surface. The light-distributing layer, the light-guiding layer and the reflective layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of air spacing in between. Three-dimensional micro-structures are constructed on a reflective surface interfacing the reflective layer and the light-guiding layer.02-02-2012
20090096957Liquid Crystal Display Device - To provide a liquid crystal display device having excellent uniformity in the brightness so that the performance of displays of liquid crystal can be increased.04-16-2009
20120154714Systems And Method For Displaying Images With Reduced Power Consumption - A method and a system for displaying images are provided. In the method, a pixel is provided that includes a layer of ferroelectric material and a layer of liquid crystal material. A first electric field is momentarily applied to the pixel to electrically polarize the ferroelectric layer to a first polarization. The first polarization is then used to maintain the liquid crystal material in a first orientation corresponding to a first apparent brightness of the pixel.06-21-2012
20100014027LED BACKLIGHT HAVING EDGE ILLUMINATOR FOR FLAT PANEL LCD DISPLAYS - One or more embodiments of the present invention provide apparatuses and systems to form edge-illuminated LED backlight units for flat-panel LCD displays. The backlight unit is able to achieve uniform color and brightness distribution with very small dimensions of depth and bezels. One or more embodiments of the present invention include a light guide coupled to a light guide plate, which, by operating together, provide simple, efficient, few LEDs and low cost backlight units. Effective coupling structures provide high system efficiency.01-21-2010
20090135337LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) including a backlight module and a LCD panel is provided. The backlight module has at least one white light source. BL05-28-2009
20110090427LIGHT GUIDE PLATE, BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - Provided is a light guide plate which can suppress glare with reduced thickness. Specifically, a light guide plate (04-21-2011
20110090426BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - Provided are a backlight assembly with improved heat dissipation, and a liquid crystal display (LCD) having such a backlight assembly. The backlight assembly includes: a light guide plate; a light source unit disposed on a side of the light guide plate; an intermediate housing covering an upper surface of the light source unit; and a lower housing coupled to the intermediate housing to accommodate the light guide plate and the light source unit, wherein the lower housing includes: a light source unit-fixing frame to which the light source unit is fixed, the light source unit-fixing frame contacting an inner surface of the intermediate housing; and a body portion disposed under the light guide plate and coupled to the light source unit-fixing frame.04-21-2011
20110102710BACKLIGHT MODULE AND DISPLAY MODULE - A backlight module that includes a light guide plate, a point light source having a light emitting surface, a first brightness enhancement film disposed above the light guide plate, and a second brightness enhancement film disposed between the light guide plate and the first brightness enhancement film is provided. The light guide plate has a rectangular pre-display area. A reference line intersects a margin of the rectangular pre-display area in 45 degrees. A normal of the light emitting surface intersects the reference line in a first included angle with ±18 degrees based on the reference line. The first brightness enhancement film has first prism structures extended in a first extending direction intersecting the normal in a second included angle with ±25 degrees based on the light emitting surface. The second brightness enhancement film is disposed between the light guide plate and the first brightness enhancement film.05-05-2011
20090290096TRANSPARENT SEE-THROUGH DISPLAY DEVICE - There is provided a see-through display device. A see-through display device comprises a liquid crystal plate filled with liquid crystals; first and second orientation plates respectively positioned on upper and lower surfaces of the liquid crystal plate, and controlling an initial alignment state of the liquid crystals; first and second conductive plates respectively positioned on an upper surface of the first orientation plate and a lower surface of the second orientation plate, and being filled with a conductive material; first and second transparent plates respectively positioned on an upper surface of the first conductive plate and a lower surface of the second conductive plate; first and second polarizing plates respectively positioned on an upper surface of the first transparent plate and a lower surface of the second transparent plate; and a transparent light guide plate spaced apart from a lower surface of the second polarizing plate, and allowing beams incident from a light source positioned at one side thereof to be totally reflected and emitted upward. Accordingly, a see-through display device comprises a transparent optical display device and a transparent light guide plate having a light source disposed at one side thereof, so that the display device can be optically transparent even when it is not operated.11-26-2009
20120162576SURFACE LIGHT SOURCE DEVICE AND LCD UNIT - A surface light source device having a local dimming function and an LCD unit using the device can include a light guide having a top surface including a plurality of linear convexes and a bottom surface including a plurality of dots. The device can also include a reflective sheet located adjacent the bottom surface, a prism sheet located adjacent the top surface, a diffusing sheet located adjacent the prism sheet, and a pair of LED light sources located adjacent both light incident surfaces of the light guide and divided into a plurality of groups. Each light emitted from the groups can be configured to be emitted independently from a respective one of local domains on a light-emitting surface of the device. Therefore, the disclosed subject matter can provide a surface light source device having a local dimming function with a simple structure as with a conventional edge light type device.06-28-2012
20100289986LIQUID CRYSTAL DISPLAY APPARATUS - A wavelength selection substrate 11-18-2010
20120249927LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes: a liquid crystal display panel having a display surface and a rear surface; a light guide plate arranged so as to avoid a position below an edge of the liquid crystal display panel on the side of the rear surface; a flexible wiring board having a portion arranged below the edge of the liquid crystal display panel with a gap disposed between the portion and the edge; a light source mounted, for introducing light, on a surface of the flexible wiring board on the side of the liquid crystal display panel at a position below the edge of the liquid crystal display panel; and a reinforcing plate located next to the light source on the opposite side to the light guide plate and attached to the surface of the flexible wiring board where the light source is mounted.10-04-2012
20120249926BACKLIGHT MODULE AND DISPLAY APPARATUS - The present invention provides a backlight module and a display apparatus. The backlight module comprises a back bezel and at least one light source. The back bezel has a first surface and a second surface opposite thereto, wherein the back bezel includes a plurality of convex portions formed on the second surface. The light source is disposed on the first surface of the back bezel, wherein at least a portion of the convex portions is positioned in a high-temperature region of a temperature distribution diagram of the back bezel. The present invention can use the convex portion of the back bezel to improve the heat-dissipation effect.10-04-2012
20120249925LIGHT CAVITY THAT IMPROVES LIGHT OUTPUT UNIFORMITY - A radiation device is disclosed. The device includes a light cavity including a top surface, a bottom surface, and side walls. A light source array including at least one light source is formed on a first side wall. The device also includes a reflective coating formed on at least the bottom surface. The top surface allows light transmission and includes a light conversion layer.10-04-2012
20100245717PRISM SHEET, AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE USING PRISM SHEET - Provided is a prism sheet which has high effects of suppressing Moiré fringes, high front luminance and reduced number of components when it is used as a prism sheet for a backlight unit for a liquid crystal display device. The prism sheet has a prism row having ridges formed in parallel to each other at equivalent intervals on one surface and a light diffusion layer containing porous particles on the other surface. The prism sheet preferably has the prism row on one surface and the light diffusion layer on the other surface by having a light-transmissive substrate in between.09-30-2010
20100245718LCD APPARATUS - An LCD apparatus includes an LCD panel having a color filter for a plurality of color components and having a plurality of pixels each associated with one of the color components of the color filter, and a side lighting-type backlight unit disposed under the LCD panel. The backlight unit includes a light guide and a light source disposed at least at one lateral end of the light guide, and further includes a reflecting layer on a side opposite to a side facing the LCD panel to reflect light coming towards the reflecting layer from the light guide. The color filter is configured to compensate a change in color spectrum in the ambient light that has passed through the LCD panel and the light guide and that has been reflected by the reflecting layer back to the light guide and the LCD panel so that the color temperature of white display of the LCD panel by the ambient light remains substantially the same as the color temperature of the original ambient light.09-30-2010
20100245716Display Device and Backlight Module with Thermal Isolating Layer - A display device and a backlight module thereof are provided. The display device further includes a display panel having a display area. The backlight module is disposed under the display panel and includes a light source holder, a light source, and a light guide plate. The light source holder has a sidewall, a top plate, and a bottom plate, wherein the bottom plate partially overlaps the display area of the display device. The light guide plate is disposed corresponding to the display area of the display device and has one end located in an opening between the top plate and the bottom plate. A thermal isolating layer is interposed between the light guide plate and a portion of the bottom plate which corresponds to the display area. The perpendicular distance between the light guide plate and the portion of the bottom plate overlapping the thermal isolating layer is greater than a perpendicular distance between the light guide plate and the other portion of the bottom plate.09-30-2010
20120127400ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY - It is an object of the invention to provide a technique capable of suppressing variations in luminance in the vicinity of a light entrance surface of a light guide plate. An illumination device includes a point light source, and a light guide plate having a side surface serving as a light entrance surface opposed to the point light source, and a main surface serving as a light exit surface. The light entrance surface of the light guide plate is provided with unevenness formed by arraying at predetermined pitches a plurality of protrusions each projecting from the light entrance surface and extending in a direction perpendicular to the light exit surface. Each of the top surface and the bottom surface of the unevenness is provided with a plurality of micro protrusions each extending in the direction perpendicular to the light exit surface and having a height smaller than the above protrusion.05-24-2012
20120127399LIQUID CRYSTAL DISPLAY DEVICE AND LIGHTGUIDE - A lightguide to be used in a liquid crystal display device includes a light exit surface, a reflection surface opposed to the light exit surface, and a light entrance surface, which is one side surface. In a region of the light exit surface or the reflection surface, which is on a front side of an intermediate portion between two light sources when viewed from the light entrance surface, a plurality of local-area line-shaped protrusions are arranged, which are extending in a first direction. Each of the local-area line-shaped protrusions reflects the entered light so that a component of the entered light which is orthogonal to the first direction is weakened. A length of a local-area line-shaped protrusion farthest from the two adjacent light sources, is larger than a length of a local-area line-shaped protrusion closest to any one of the two adjacent light sources.05-24-2012
20100208169Transflective display apparatus - Provided is a transflective display apparatus including a color reflective plate disposed at a light emitting surface of a light guide plate, and a display panel disposed at another surface of the light emitting surface of the light guide plate so that light emitted from a light source is reflected by a color reflective plate through the light guide plate and travels toward the display panel.08-19-2010
20090059129Light source assembly and liquid crystal display utilizing the same - An exemplary light source assembly includes a light guide plate, a printed circuit board facing the light guide plate, and at least two light emitting elements. The at least two light emitting elements are angled on the printed circuit board. Light emitted from the at least two light emitting elements is obliquely transmitted onto the light guide plate.03-05-2009
20090059127Liquid crystal display device - In a backlight which arranges light emitting diodes on a side surface of a light guide plate, even when the light guide plate is made thin by further reducing a thickness of the light guide plate and the light emitting diodes having a thickness larger than the thickness of the light guide plate are used, it is possible to manufacture the light guide plate with high accuracy in a short time. In a liquid crystal display device having a backlight which radiates light to a liquid crystal panel, LEDs are mounted on the light guide plate formed on the backlight as a light emitting element, a light radiation portion of the light guide plate is formed by molding by applying pressure and heat to a sheet-shaped resin, and a light incident portion of the light guide plate is formed by injection molding.03-05-2009
20120169969BACKLIGHT MODULE AND LIQUID CRYSTAL DIVICE USING THE SAME - A backlight module includes a light guide plate with a main body and a light source with a circuit board and a plurality of light bars. The main body has a light incidence surface and a light emitting surface. The light incidence surface has a plurality of accommodating grooves and the light emitting surface or the light incidence surface has a plurality of light-separation grooves which are perpendicular to the accommodating grooves. The accommodating groove has a first and a second light incidence parts. A reflecting layer is disposed on the surface of the circuit board being located between each two light bars. The light source is disposed on the light incidence surface and light bars are disposed for the accommodating grooves so as a predetermined distance located between the light bar and the second light incidence part is formed a light mixing space to reduce the production of bright lines.07-05-2012
20120176566BACKLIGHT DEVICE AND IMAGE DISPLAY APPARATUS - A backlight device of the present invention includes a substrate (07-12-2012
20120075556LOCALLY CONTROLLABLE BACKLIGHT - A backlight is provided and comprises an optical fiber light-emitting panel comprising an optical fiber light-emitting panel comprising at least one optical fiber light-emitting unit, wherein each optical fiber light-emitting unit comprises a light-emitting portion and a light-guiding portion which are connected together, the light-emitting portion forms a plane emitting area and the light-guiding portion extends to a side edge of the optical fiber light-emitting panel; and at least one illuminating light which is provided at the end surface of the light-guiding portion. Further, a liquid crystal display is provided.03-29-2012
20120176567LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device including a liquid crystal cell (07-12-2012
20120224122LIQUID CRYSTAL DISPLAY DEVICE - The liquid crystal display device has a liquid crystal display panel, a backlight for illuminating the liquid crystal display panel where the outer shape of the backlight in a plane has at least one corner of which the angle is greater than 90°, and a light guide plate LG having approximately the same form as the outer shape of the backlight, wherein a number of light emitting diodes are aligned along two sides (s09-06-2012
20120257144LIGHT GUIDING UNIT, LIGHTING DEVICE, AND DISPLAY DEVICE - In order to provide a new light guiding unit capable of accommodating to area-active driving, and a lighting device, a lighting device (10-11-2012
20090021668Backlight Module and Liquid Crystal Display Comprising the Same - A backlight module and a liquid crystal display including the backlight module are provided. The backlight module includes a light source, a light guide plate and a prism sheet. The light source is disposed at a side of the light guide plate, while the prism sheet is disposed adjacent to the light emitting surface of the light guide plate. The prism sheet has a plurality of prism structures facing the light guide plate, wherein each of the prism structures substantially has a vertex angle of about 55 to 70 degrees. Thus, light emitted from the light guide plate can be adjustably concentrated along the direction perpendicular to the panel.01-22-2009
20120081637BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY - A backlight module including a light guide panel (LGP), a light source, and a reflective sheet is provided. The LGP has a light entering surface, a light reflecting surface, and a light exiting surface. The LGP includes a plurality of first light guide micro-structures and a plurality of protruding micro-structures. The first light guide micro-structures are disposed on the LGP and distributed at the light reflecting surface. The protruding micro-structures are disposed on the LGP and distributed at the light reflecting surface. The protruding micro-structures and the first light guide micro-structures are distributed alternatively. The light source is disposed beside the light entering surface. The reflective sheet is disposed at a side of the light reflecting surface and is in contact with the protruding micro-structures. Moreover, a liquid crystal display with the above backlight module is also provided.04-05-2012
20120081636BACKLIGHT MODULE AND DISPLAY APPARATUS - A backlight module and a display apparatus are disclosed. The backlight module comprises a frame, a plurality of light guide units and a plurality of light sources. The frame includes an inside surface and a plurality of positioning convex portions, wherein the positioning convex portions are formed on the inside surface. The light guide units are disposed in the frame and have a plurality of positioning concave portions. The positioning convex portions of the frame correspond to the positioning concave portions of the light guide units, thereby positioning the light guide units in the frame. The light sources are disposed at one side of the light guide units. The backlight module is applicable to the display apparatus.04-05-2012
20120229731LCD and Light Guide Plate Thereof - A light guide plate includes an incident face, a bottom surface, a main reflective structure and an auxiliary reflective structure. The bottom surface is connected to the incident face. The main reflective structure is disposed on the bottom surface and has a first and a second inclined surface. The auxiliary reflective structure is disposed on the bottom surface and has a third and a fourth inclined surface. The auxiliary reflective structure and the main reflective structure have an interval therebetween, in which the interval ranges between 0.2 micrometer and 0.5 micrometer, and a bottom width of the auxiliary reflective structure on the bottom surface is smaller than a bottom width of the main reflective structure on the bottom surface. A liquid crystal display is also disclosed herein.09-13-2012
20080309848Backlight Device - All of LEDs 12-18-2008
20110122341LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER - A lighting device 05-26-2011
20080297698LIGHT ILLUMINATING UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A light illuminating unit includes light generating members and a light guiding plate. Each of the light generating members generates light. The light generating members include an LED. The light guiding plate includes a light-incident face onto which the light is incident, a lateral face facing the light-incident face, and a light-exiting face through which the incident light exits. The light-exiting face being configured to connect the light-incident face and the lateral face. An interval between the light-incident face and the lateral face varies in accordance with a position of each of the light generating members. Thus, a number of LEDs decreases, so that an assembly process of the light illuminating unit may be simplified, and manufacturing cost and power consumption thereof may be reduced.12-04-2008
20080297697Light guide plate, backlight assembly including the same, and liquid crystal display device including the same - Disclosed herein are a light guide plate, a backlight assembly including the light guide plate, and a liquid crystal display device including the backlight assembly which can uniformly maintain the brightness uniformity and prevent the moiré phenomenon. The light guide plate in accordance with the present disclosure includes: an incident surface, to which light generated from a light source is incident, including a diffusion pattern formed in a round shape; an emitting surface, through which the light is emitted, including a first prism pattern; and an opposite surface, formed opposite to the emitting surface, including a direction change pattern by which the direction of the light is changed toward the emitting surface.12-04-2008
20080297696LIGHT GUIDING PLATE UNIT, SURFACE LIGHT SOURCE APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS - A light guiding plate unit which can emit uniform light of a predetermined polarization, a surface light source apparatus and a liquid crystal display apparatus are provided. A light guiding plate unit is provided with a light guiding plate which can guide light and has a first surface from which light is emitted and a diffraction grating which is provided on the first surface of the light guiding plate, and the diffraction grating is formed of a number of metal wires in straight lines which are aligned in a direction approximately perpendicular to the long axis of the metal wires, and the length w of the metal wires in the direction in which the number of metal wires are aligned is approximately 55% or more and approximately 85% or less of the spatial period of the diffraction grating. Thus, the ratio of the length w of the metal wires to the spatial period is set to 0.65 or higher and 0.85 or lower, and thus, it is possible to control the amount of transmission of light in a predetermined state of polarization through the diffraction grating formed on the first surface.12-04-2008
20080297693Lamp reflector with grounding portion and backlight module and liquid crystal display device with same - An exemplary backlight module includes a light guide plate, a light reflector, and a frame accommodating the light guide plate and the light reflector. The light reflector includes a main surface and a protruding portion provided at the main surface with the grounding portion configured for electrically connecting the lamp reflector with the frame. An exemplary liquid crystal display device using the backlight module is also provided.12-04-2008
20120320311DISPLAY DEVICE - The present invention provides a display device which can ensure a large viewing angle while maintaining high light source energy use efficiency. The display device 12-20-2012
20080284945BACKLIGHT FOR LIQUID CRYSTAL DISPLAY - A backlight includes a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness. A plurality of antireflection features are on or in the first light input surface and second light input surface. Each antireflection feature has a base length value and a height value that are less than the light guide thickness. A right eye image solid state light source is positioned to provide light into the first light input surface and a left eye image solid state light source is positioned to provide light into the second light input surface.11-20-2008
20120327332LIGHT GUIDE PANEL, SURFACE LIGHT SOURCE APPARATUS INCLUDING LIGHT GUIDE PANEL, AND FLAT PANEL DISPLAY INCLUDING SURFACE LIGHT SOURCE APPARATUS - A light guide panel includes: a light guide layer having a light incident surface; a polarization separation layer configured to select a desired polarization among light emitted from the light guide layer and to emit light having the polarization; and a light homogenization layer including a plurality of fibers and a supporting medium of the fibers, the light homogenization layer configured to diffuse and scatter light incident on the light guide layer into the light guide layer. The polarization separation layer includes: a plurality of first fibers having birefringence; and a first supporting medium that is isotropic and configured to support the first fibers. The refractive index of the first supporting medium corresponds to at least one of two different refractive indices of the first fibers. The light homogenization layer includes: a plurality of second fibers having birefringence; and a second supporting medium that is isotropic and configured to support the second fibers.12-27-2012
20130010233LIGHT EMITTING DEVICE ARRAY AND BACKLIGHT UNIT - A light emitting device array includes a substrate including a first region and a second region that is inclined with respect to the first region, a first light emitting device package arranged on the first region, and a second light emitting device package that is arranged on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°.01-10-2013
20110141403LIGHT-EMITTING MODULE UNIT, LIGHT GUIDE UNIT, BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - In an LED module (MJ), a recessed portion (DH) is formed by hollowing at least a part of a region of a non-mounting substrate surface (06-16-2011
20110157521LIQUID CRYSTAL DISPLAY - A liquid crystal display according to the present invention includes a light source, an optical control member, and a liquid crystal display panel. Said optical control member includes a base having optical transparency and a plurality of linear structures provided on said base, a section of the linear structure orthogonal to its extending direction includes a first sectional portion having a triangular shape defined by first to third sides, and a second sectional portion having a plurality of triangular structures each having a smaller area than the first sectional portion and defined by fourth to sixth sides, the first side of the first sectional portion is abutted on and parallel to a surface of said base, the second sectional portion is provided on the second side of the first sectional portion, and the fourth side of the second sectional portion is abutted on and parallel to the second side of the first sectional portion. Said liquid crystal display panel having a polarizing plate arranged in a direction to transmit a P-polarized component is provided on the side of the light output surface of said optical control member. Therefore, the liquid crystal display according to the present invention can solve the problems of color separation and insufficient luminance.06-30-2011
20130021558LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC APPARATUS - In a liquid crystal display device, a reflecting surface is attached to a portion, which overlaps with a periphery portion of a light guiding plate where the light incident section is position in a surface on the light guiding plate side in the dispersing sheet which is positioned farthest to the light guiding plate side among a plurality of optical sheets which are positioned between the light guiding plate and a liquid crystal panel. As a result, light which is emitted from the periphery portion of the light guiding plate is returned into the light guiding plate by being reflected by the reflecting surface, and after this, is emitted as illumination light from a light emitting surface while progressing within the light guiding plate.01-24-2013
20130021559ILLUMINATING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, ELECTRONIC DEVICE, AND MANUFACTURING METHOD OF LIGHT GUIDE PANEL - When first grooves are formed by irradiating a lower surface facing a light outgoing surface of a light guide plate for an illuminating device with laser beams, an outer circumferential region is firstly irradiated with the laser beams to form second grooves. Then, the second grooves are inspected. Next, irradiation conditions of the laser beams are adjusted based on an inspection result of the second grooves, irradiation positions of the laser beams are linearly displaced from formation positions of the second grooves, and formation of the first grooves in the scattering reflection region is then started.01-24-2013
20080252819LIQUID CRYSTAL DISPLAY AND BACKLIGHT MODULE THEREOF - A backlight module includes a reflection sheet and a film structure disposed above the reflection sheet with a gap therebetween. A light source is disposed in the gap between the reflection sheet and the film structure so as to provide light. The film structure includes a first region for reflecting light incident thereupon from the light source and the reflection sheet, and a plurality of second regions for transmitting at least partially light incident thereupon from the light source and the reflection sheet.10-16-2008
20080231773Surface light source which selectively irradiates two linearly polarized light beams in polarized states different from each other and liquid crystal display apparatus using the same - A surface light source includes a light source which selectively irradiates two polarized light beams in polarized states different from each other, a light guide plate which includes a transparent plate having two plate surfaces facing each other and end faces surrounding the plate surfaces, and irradiates the two polarized light beams form an irradiation surface, and an optical element which irradiates irradiated light from the irradiation surface of the light guide plate toward a direction substantially normal to the light guide plate upon changing the propagation direction of the irradiated light. A liquid crystal display apparatus includes this surface light source, a polarization control element which is placed on the observation side of the surface light source and rotates the polarization plane of linearly polarized light transmitted through one of partitioned first and second areas through a predetermined angle, and a liquid crystal display device placed on the observation side.09-25-2008
20080231772FLAT PANEL DISPLAY AND FABRICATION METHOD THEREOF - A flat panel display is provided. The flat panel includes at least one light emitting device having a light emitting semiconductor device and a lens. The lens includes two reflective surfaces which are disposed at both sides with respect to a central axis of the lens. Refractive surfaces connect with the respective reflective surfaces and have a tilt included angle with respect to the central axis. Each of the refractive surfaces continuously extends from the reflective surface along a direction toward the central axis. A Fresnel surface is configured between the refractive surfaces. Light rays emitted from the light emitting semiconductor device reach the lens. A portion of the light rays reaching each of the reflective surfaces is reflected to at least one of the refractive surfaces and the Fresnel surface. The reflected light rays are refracted and collected with a convergent angle.09-25-2008
20100014026BACKLIGHT UNIT, METHOD FOR ASSEMBLING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE USING THE BACKLIGHT UNIT - A back light unit includes a light guide plate having a rectangle shape with first and second edges and a light source having a light element to emit light to a first edge of the light guide plate. The light guide plate emits the incident light from the light source to a liquid crystal display panel as a flat light source. An elastic frame is integrally formed with first and second frame elements in a rectangle shape so as to surround the light guide plate. The light source includes a metal frame clipped by a clip shape implemented provided in the first frame element. The first edge facing the second edge of the light guide plate is fitted to the metal frame. The second edge of the light guide plate is fitted to a second frame element having a clip portion for clipping the light guide plate.01-21-2010
20080225205Display With Focussed Illumination - A liquid crystal display with focused illumination is described. In an example, a light-source emitting a plurality of discrete colors is focused onto a liquid crystal display panel. The liquid crystal display panel has a plurality of pixels and each pixel has regions corresponding to the colors emitted by the light-source. Light of each color is focused onto the regions of the pixels corresponding to that color.09-18-2008
20080225204LIQUID CRYSTAL DISPLAY MODULE - The present invention provides a liquid crystal display module which can prevent the generation of display irregularities. The liquid crystal display module includes a liquid crystal display panel and a backlight device arranged on a back surface of the liquid crystal display panel. The backlight device is constituted of a light guide plate and a reflection sheet arranged on a back surface of the light guide plate. The liquid crystal display module includes a flexible printed circuit board having one end thereof mounted on the liquid crystal display panel and the other end thereof formed on a back side of the reflection sheet in an overlapping manner. An insulation sheet is arranged between the other end of the flexible printed circuit board and the reflection sheet.09-18-2008
20080225203BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY MODULE INCLUDING THE SAME - A backlight unit comprises a reflecting plate, a light guide plate disposed over the reflecting plate, and a plurality of optic films disposed over the light guide plate. The backlight unit further comprises a lamp horizontally spaced apart from the light guide plate, and a reflecting film corresponding to an upper portion of a space between the light guide plate and the lamp.09-18-2008
20130093981LED Back Light Module and Liquid Crystal Display Device - The present invention discloses a LED back light module and a LCD device, wherein the LED back light module comprises a lamp source fixing device for fixing the LED light bar, and said lamp source fixing device is provided with multiple fins. Because the fins are arranged on the lamp source fixing device for fixing the LED light bar of the present invention, the heat dissipation area is increased, and the LED heat dissipation is improved.04-18-2013
20130093980LIGHT GUIDE PLATE, SURFACE LIGHT SOURCE DEVICE, AND DISPLAY DEVICE - A light guide plate (04-18-2013
20130100381BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a backlight module, which comprises a light guide plate and a light source. The light guide plate comprises a light input side, a light output surface which adjoins to the light input side, and a bottom surface corresponding to the light output surface. The light source comprising a light-emitting surface is disposed at one side of the light input side of the light guide plate, and the light-emitting surface of the light source is corresponding to the light input side of the light guide plate. The backlight module further comprises a specular reflector which is disposed between the light-emitting surface of the light source and the light input side of the light guide plate. Light beams which are emitted from the light-emitting surface of the light source toward the outside of the light guide plate will enter the light guide plate after being specularly reflected by the specular reflector. The present invention further provides a liquid crystal display device.04-25-2013
20130100382LIGHT GUIDE PLATE, BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - A light guide plate is an optical transmissive plate and comprises at least one light incident surface for receiving light rays, one light exiting surface intersecting with the light incident surface, and one bottom surface opposite to the light exiting surface and formed with a plurality of grooves. The grooves are arranged perpendicularly to the light incident surface for adjusting a distance between a first grooves near the light incident surface and the light incident surface. Since a distance between the first microstructure near the light incident surface and the light incident surface is adjusted without modifying the light coupling distance, the hot-spot phenomenon can be reduced without increasing the cost of the light guide plate. Other grooves are arranged at increasing density and are slightly different for improving uniformity of the light rays outputted and luminance of the backlight module comprising the light guide plate.04-25-2013
20130114023LIQUID CRYSTAL PANEL ASSEMBLY AND IMAGE DISPLAY APPARATUS HAVING THE SAME - A liquid crystal panel assembly is provided, which includes a liquid crystal panel displaying an image, a light source unit arranged on a side of the liquid crystal panel, an optical sheet unit arranged in the rear of the liquid crystal panel, a reflection sheet arranged to be spaced apart from the optical sheet unit, a light scattering unit arranged adjacent to the light source unit, where the light scattering unit scatters light such that at least some of the light emitted from the light source unit is incident toward the reflection sheet, and a pattern member arranged on the reflection sheet, the pattern member including a pattern of repeating optical shapes.05-09-2013
20130128190Backlight Module and LCD Device - A backlight module is disclosed, which comprises a light guide plate, a point light source and a substrate. The light guide plate comprises a top surface and a bottom surface opposite to each other and a side surface located between the top surface and the bottom surface. The point light source is disposed on the substrate. The backlight module further comprises a backplate, a front frame and a first reflective unit. The backplate is adapted to accommodate the light guide plate. The front frame is disposed adjacent to the top surface of the light guide plate. The point light source is disposed adjacent to the side surface. A bisector line of a light emitting range of the point light source is directed towards a plane in which the top surface or the bottom surface of the light guide plate is located. The first reflective unit is adapted to reflect light emitted from the point light source into the light guide plate. A liquid crystal display (LCD) device comprising the backlight module is further provided in the present disclosure. The backlight module and the LCD device of the present disclosure feature a narrow frame and can dissipate heat easily.05-23-2013
20130128189Backlight Module and Liquid Crystal Display Device - The present invention discloses a backlight module and an LCD device, wherein the backlight module comprises a light bar, a light guide plate coupled to a luminous surface of the light bar, and a coupling light element arranged between the light bar and the light guide plate; and the coupled light element forms a coupled light channel faced to a light incident surface of the light guide plate around the luminous surface of the light bar. The present invention, by arranging the coupling light element between the luminous surface of the light bar and the light guide plate of the backlight module to be used for leading the light emitted by the light bar to the light guide plate, make the coupling light element formed the coupling light channel faced to the light incident surface of the light guide plate around the luminous surface of the light bar. Besides, the coupling light channel leads the light emitted by the light bar to the light incident surface of the light guide plate, and especially to reflect the wide-angle rays emitted by the light bar to the light incident surface of the light guide plate, and then to make the light emitted by the light bar entered into the light guide plate as much as possible. In this arrangement, the utilization rate of rays of the light emitting lamps is enhanced, the efficiency of the backlight module is enhanced and the display effect of an LCD device is improved.05-23-2013
20130135559Backlight Module and LCD Device - The present invention discloses a backlight module and an LCD device, comprising: a backplane and an LGP; the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, and the backplane is provided with rivet(s) for matching with the positioning hole; a buffer structure is arranged between the rivet and the wall of the positioning hole. In the present invention, because the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, the arrangement of the positioning hole does not influence the light guide area of the LGP; meanwhile, because a layer of buffer structure is arranged between the positioning hole and the rivet, the rupture of the part with concentrated stress in the positioning hole during collision is avoided. In addition, when the LGP is expanded with heat, the buffer structure can also avoid the extrusion damage caused by direct extrusion between the LGP and the rivet; when the LGP is contracted with cold, the gap between the LGP and the rivet is increased so that shake is easily caused. The gap between the LGP and the rivet is automatically filled by a buffer part through the elastic regulation of the buffer part. Thus, the shake collision of the LGP is avoided.05-30-2013
20130135560DISPLAY DEVICE INCLUDING SUB-BACKLIGHT - A display device including a sub-backlight unit which can prevent the obscure sights caused by light from the light source of the sub-backlight unit arriving on an article or reel of the main display screen and then reflecting in the frontal direction is provided. The sub-backlight unit includes a second light guide panel having an opening part formed therein corresponding to a transparent window, a second light source disposed around the second light guide panel, and a polymer dispersed liquid crystal (PDLC) sheet disposed close to the front side of the opening of the second light guide panel.05-30-2013
20130141669SURFACE LIGHT SOURCE APPARATUS - A light guide plate has a light incident surface configured to be arranged facing a point light source for introducing light from the point light source, a light outputting surface that outputs the light to an outside of the light guide plate, a light introducing section for confining the light from the point light source entered from the light incident surface, and a light guide plate main body having a thickness smaller than a maximum thickness of the light introducing section and being arranged to be continuous with the light introducing section, for outputting the confined light to the outside of the light guide plate from the light outputting surface by a light outputting element.06-06-2013
20110273645LED BACKLIGHT SYSTEM FOR LCD DISPLAYS - A LCD system including multiple light sources optically coupled through different light entry regions to at least one waveguide element positioned to backlight a LCD panel. A LCD system including multiple light sources coupled to light entry regions of two or more waveguides comprising a waveguide system positioned to backlight a LCD panel. Waveguides of various configurations and promoting even lighting of associated LCD panels are provided. Resulting LCD systems enable uniformly lit panels having diagonal measurements in excess of 12 to 14 inches, but the invention is not limited to panels of any particular size.11-10-2011
20080198298Backlight unit and display device having the same - Provided are a backlight unit and a display device having the same. The backlight unit includes a case having an opening, at least one lamp assembly disposed on a side surface of the case and including a light source, an optical transreflective unit on the case, the optical transreflective unit transmitting a portion of first light passing through the opening and reflecting a portion of second light generated from the light source, and an optical sheet including a first diffusion unit on the optical transreflective unit.08-21-2008
20080198297BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit which includes a structure in which the sensitivity of a light sensor for detecting color reproducibility of white light is increased, and a liquid crystal display (“LCD”) device having the same. The backlight unit includes a light source which generates light, a light guide plate which guides the light incident from the light source, a light sensor which detects the light emitted from the light guide plate and a mold frame which receives the light source, the light guide plate, and the light sensor. The mold frame includes a receiving recess which receives the light sensor, and a light sensing structure formed on a sidewall thereof being in contact with a side of the light guide plate which reflects the light emitted from the light guide plate and provides the light emitted from the light guide plate to the light sensor.08-21-2008
20130148058Display with Dual-Edge Light-Emitting-Diode Backlight - An electronic device may have a liquid crystal display with backlight structures. The backlight structures may produce backlight that passes through display layers in the display. The display layers may include color filter elements, a liquid crystal layer, and a thin-film transistor layer. The backlight structures may have a light guide plate with opposing first and second edges. The light guide plate and other display layers may be assembled within support structures such as a metal chassis and a plastic chassis. A first strip of light-emitting diodes may be attached to the first edge of the light guide plate in a position that is floating with respect to the metal chassis. A second strip of light-emitting diodes may be attached to the second edge of the light guide plate in a position that is fixed with respect to the metal chassis.06-13-2013
20110234943DUAL LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) is provided. The LCD includes at least one light source which provides light, a display panel which includes pixels reflecting the light from the light source, and at least one light guide plate (LGP) which is formed substantially parallel to a surface of the display panel and is separated from the display panel, wherein a predetermined space is defined between the LGP and the display panel, and the LGP guides the light emitted from the light source to the pixels and allows the light reflected by the pixels to pass through the LGP.09-29-2011
20110249221LIGHTING DEVICE AND DISPLAY DEVICE - A lighting device includes: a light guide plate; a light source disposed on a side face of the light guide plate; and a light modulation element disposed on a surface or in the inside of the light guide plate and adhered to the light guide plate. The light modulation element has a pair of transparent substrates disposed separately and oppositely, a pair of electrodes provided on respective surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region, having optical anisotropy, responsive to an electric field, and a second region, having optical anisotropy, unresponsive to an electric field. The second region has a striped structure with average striped texture size of 0.05 μm to 10 μm both inclusive in a short axis direction.10-13-2011
20100309412AMBIENT LIGHT BACKLIGHT FOR TRANSMISSIVE DISPLAYS - Devices are provided for using ambient light to illuminate transmissive displays. One such backlight includes a light source configured to provide artificial light to the transmissive display when the backlight is closed and a surface configured to reflect ambient light to the transmissive display when the backlight is open. Another backlight includes a surface configured to provide ambient light to the transmissive display even when the backlight is closed. In some implementations, power to the light source may be reduced or shut off when the backlight is open and/or when sufficient ambient light is being provided to the transmissive display.12-09-2010
20120281166LIGHT GUIDE PLATE, SURFACE ILLUMINATING DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - To provide a light guide plate yielding a high light use efficiency and capable of emitting light with minimized unevenness in luminance and yielding a distribution such that the central area of the screen is brighter than the periphery, a light guide plate includes a rectangular light exit plane, and a light entrance plane for admitting light traveling substantially parallel to the light exit plane, a rear plane provided opposite from the light exit plane, and scattering particles dispersed inside, the light guide plate further including two or more layers lying on one another in a direction substantially perpendicular to the light exit plane and having different particle densities of scattering particles, the two or more layers including a first layer having a particle density of Npo and a second layer having a particle density of Npr and located closer to the rear plane than the first layer, Npo and Npr having a relation Npo11-08-2012
20130182200LIGHT GUIDE PLATE, ILLUMINATION DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A light guide plate (07-18-2013
20110292321SHADOW ELIMINATION IN THE BACKLIGHT FOR A 3-D DISPLAY - A light guide device can provide a backlight for an LCD or a projection display. The light guide device includes a light-input end and an opposing end, opposing left and right sides which join the light-input end and the opposing end, and opposing front and back surfaces which join the light-input end and the opposing end. A birefringent film is provided on the opposing left and right sides of the light guide which switches a polarization of incident light. Incident light is provided at the light-input end having a right-handed circular polarization, in addition to light having a left-handed circular polarization. Light emitted from the front surface passes through a linear polarizer which selectively passes light to allow privacy of viewing by a user. The incident light can be provided at the light-input end using one or more cuboid rods, slab light guides, or discrete light sources.12-01-2011
20110310332SIMPLIFIED EDGE-LIT BACKLIGHT SYSTEM - A backlight system includes an extended area light guide (12-22-2011
20130188115Backlight Module and LCD Device - The invention discloses a backlight module and an LCD device. The backlight module includes an optical assembly at the edge of which an independent positioning lug for fixing the optical assembly is fixed, and the optical assembly is an LGP, a reflector sheet, or an optical film. The invention splits the optical assembly and the positioning part apart, and the optical assembly may be processed into a normal rectangular structure without secondary cutting for forming a positioning part, thereby reducing the waste of materials. The positioning lug has a small size and can be processed with the leftover material of the cut optical assembly.07-25-2013
20120019744LIQUID CRSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present invention is for a liquid crystal display device having a patterned retarder enabling stereoscopic image display and a light reflector capable of improving luminous efficiency provided on a panel of the display device, and a manufacturing method thereof, the liquid crystal display device includes; first and second substrates arranged opposite each other, a light reflector on the first substrate, a first black stripe on the second substrate facing to the light reflector corresponding to the light reflector, a liquid crystal layer formed between the first and second substrates, a retarder provided on top of the second substrate, a reflector placed below the first substrate, and a light source positioned below the reflector.01-26-2012
20120019743Uniform reflective light-guide apparatus, and backlight module and LCD device having the same - A uniform reflective light-guide apparatus can accompany an optional edge light source and includes a light-guiding layer, a reflective layer and a light-exiting surface. The light-guiding layer further has a lateral side to define a light-introducing surface for allowing entrance of lights from the edge light source. The reflective layer is to reflect incident lights back to the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights in the light-guiding layer to leave the light-guide apparatus. The reflective layer and the light-guiding layer are manufactured integrally by a co-extrusion process so as to avoid possible existence of an air spacing between the reflective layer and the light-guiding layer.01-26-2012
20120019742BACK LIGHT MODULE AND LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) and a back light module are provided. The back light module includes a light guide plate (LGP) and a plurality of light-emitting devices. The LGP has a plurality of partitioning grooves, a bottom surface, a light exiting surface, a first side and a second side. The bottom surface is opposite to the light exiting surface. The first side and the second side are located at the two opposite side surfaces of the LGP. The extension direction of each of the partitioning grooves extends from the first side towards the second side. Each of the partitioning grooves has an opening and the opening is located at the bottom surface. The plurality of light-emitting devices are disposed at least one of the first side and the second side. The liquid crystal panel of the LCD is disposed at the light exiting surface.01-26-2012
20130201428LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device is provided with: a liquid crystal display panel (08-08-2013
20130201427LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a liquid crystal display panel, a first back light module (BLU), a polarizer, a second BLU and a pattern retarder. The first BLU is disposed below the liquid crystal display panel for emitting light. The polarizer is disposed on the first BLU, to convert the light into a first light. The second BLU is disposed between the liquid crystal display panel and the first BLU for emitting a second light. The pattern retarder is disposed between the liquid crystal display panel and the first BLU. The pattern retarder includes plural first and second polarizing regions with orthogonal polarization states, and the first and second polarizing regions are arranged in an interlaced order. Also, the polarization state of the first light is orthogonal to the polarization state of the second polarizing region.08-08-2013
20120086890BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A mold frame used for a backlight device is thinned to enable a frame of a liquid crystal display device to be narrowed. Gates for injection molding are arranged on an inner side surface of a mold frame. The inner side surface forms recesses in portions including the positions of the gates. Protrusions for preventing optical sheets from dropping out are disposed on an edge of the optical sheets housed within the mold frame in correspondence with the recesses accompanied by the injection molding. The recesses are used for engaging the protrusions, thereby requiring no provision of additional recesses for engaging the protrusions.04-12-2012
20120086889LIQUID CRYSTAL DISPLAY AND BACKLIGHT MODULE THEREOF - A backlight module includes an LGP and a linear light source. The LGP includes a light-incident side surface and a top light-emitting surface that has a peripheral region and an effective illumination region. The linear light source includes a circuit board, solid-state light-emitting devices configured on and electrically connected to the circuit board, and a reflector covering a portion of the peripheral region. Light emitted from each solid-state light-emitting device enters the LGP from the light-incident side surface. The reflector includes first reflection parts that correspond to the solid-state light-emitting devices and second reflection parts. Each second reflection part is connected to two adjacent first reflection parts. Each first reflection part and each second reflection part extend towards the effective illumination region from an edge of the top light-emitting surface. An extension length of each first reflection part is shorter than that of each second reflection part.04-12-2012

Patent applications in class Edge lit type light guide behind liquid crystal