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Light Guide Plate patents



      
           
This page is updated frequently with new Light Guide Plate-related patent applications. Subscribe to the Light Guide Plate RSS feed to automatically get the update: related Light RSS feeds. RSS updates for this page: Light Guide Plate RSS RSS


Liquid crystal display device with brightness adjustment

Illumination device, display device, and television reception device

Electronic device

Date/App# patent app List of recent Light Guide Plate-related patents
07/24/14
20140205160
 Image sensing apparatus for fingerprint identification and related decoder circuit patent thumbnailnew patent Image sensing apparatus for fingerprint identification and related decoder circuit
An image sensing apparatus includes a substrate, a light guide plate, a plurality of photosensors and a light source. The substrate has a first side.
07/24/14
20140204612
 Light guide plate for backlight and manufacturing method therefor patent thumbnailnew patent Light guide plate for backlight and manufacturing method therefor
A light guide plate for a backlight. The light guide plate includes: a light source unit for generating light; a light guide plate proximate to the light source unit and including an upper surface and a lower surface; and a light emission pattern configured to diffuse a portion of the light directed toward an image display panel, and a first straight pattern configured to channel the light along a direction substantially parallel to a direction of propagation of the light generated by the light source unit, both the light emission pattern and the first straight pattern being disposed on one of the upper surface and the lower surface of the light guide plate, in which the first straight pattern has peaks and valleys formed in alternating and repeating manner in a direction substantially perpendicular to a direction of propagation of the light generated by the light source unit..
07/24/14
20140204611
 Display apparatus and light emitting module thereof patent thumbnailnew patent Display apparatus and light emitting module thereof
A display apparatus comprising a display panel and a light emitting module disposed oppositely is provided. The light emitting module comprises a light guide plate, a plurality of light guide grooves and at least a light unit.
07/24/14
20140204609
 Display device including backlight assembly patent thumbnailnew patent Display device including backlight assembly
A display device includes: a backlight assembly which generates and outputs light; and a display panel which displays an image with the light from the backlight assembly. The backlight assembly includes: a light emitting unit which generates the light; a light guide plate which guides the light provided from the light emitting unit toward the display panel and includes a protruding part which protrudes laterally from the light guide plate from the light guide plate at a first corner thereof; and a reflective member which is on a surface of the protruding part and reflects the light provided from the light emitting unit toward the protruding part and toward a second corner of the light guide plate and the periphery of the second corner..
07/24/14
20140204314
 Liquid crystal display device with brightness adjustment patent thumbnailnew patent Liquid crystal display device with brightness adjustment
An lcd device includes a backlight module, a liquid crystal layer, a brightness detecting module and a control unit. The backlight module includes a light guide plate and light sources.
07/24/14
20140204311
 Liquid crystal display device patent thumbnailnew patent Liquid crystal display device
The present invention provides a liquid crystal display device, comprising: a light source, a light guide plate having a light-exiting surface, a substrate having a first surface and a second surface opposite to the first surface, a display area of the second surface comprising a pixel area and at least one non-pixel area, and a gap provided between the light-exiting surface of the light guide plate and the first surface of the substrate, wherein, at least one slot is provided on the light-exiting surface of the light guide plate; a part of the light generated by the light source and entering the light-exiting surface of the light guide plate, after being refracted by the slot and the gap sequentially, is refracted by the first surface of the substrate into the substrate, and then enters the pixel area. According to the present invention, it is able to change the light transmission path, thereby to effectively reduce the light entering a non-pixel area..
07/24/14
20140204310
 Liquid crystal display device patent thumbnailnew patent Liquid crystal display device
Disclosed is an lcd device with reduced thickness and bezel width. The lcd device includes a liquid crystal display panel configured to include an upper substrate and a lower substrate that are facing-coupled to each other, a backlight unit configured to include a light guide plate which irradiates light incident from a light source module on the liquid crystal display panel and an optical sheet disposed on the light guide plate, and a coupling member configured to couple the liquid crystal display panel to the light guide plate with the optical sheet therebetween such that a sealed space is provided between the liquid crystal display panel and the light guide plate..
07/24/14
20140204289
 Electronic device patent thumbnailnew patent Electronic device
An electronic device includes a housing, a metallic support plate, a mounting frame, and a backlight module. The housing includes a side frame, and a mounting frame mounted on the side frame.
07/24/14
20140204275
 Illumination device, display device, and television reception device patent thumbnailnew patent Illumination device, display device, and television reception device
A backlight device (24) of the present invention includes: a chassis (22) having at least a bottom plate (22a) that is rectangular in a plan view; a light guide plate (20) that has light-receiving faces (20a), which are side faces, and a rear surface that faces the surface side of the bottom plate (22a); led light sources (28) that are arranged on the surface side of the bottom plate (22a) and that face the respective light-receiving faces (20a); protruding parts that have a protruding shape and spacer parts positioned on the surface side of the bottom plate (22a), facing the light guide plate (20) side; and a reflective sheet (26) that is arranged between the light guide plate (20) and bottom plate (22a). A portion of the end edge of the reflective sheet (26) is a free section (26b) that allows movement in the plate surface direction of the light guide plate (20), and the other end edges are restricted sections (26a) that restrict movement in the plate surface direction of the light guide plate (20) by being held between the respective spacer members and the light guide plate (20)..
07/17/14
20140198531
 Light guide plate patent thumbnailLight guide plate
The light guide plate includes two layers having different particle concentrations, in which the thicknesses of the two layers are varied to change the combined particle concentration of the light guide plate, and conditional expressions of 0.3 mm≦tlg≦4 mm and 0.3≦tcen/tlg≦1 are satisfied when the thickness in the direction perpendicular to the light exit surface is defined as tlg and the thickness at the center of the second layer is defined as tcen. The light guide plate of the present invention can have a large and thin shape, can emit light having high light use efficiency and small luminance unevenness, can obtain a middle-high or bell-shaped brightness distribution and can be easily manufactured..
07/17/14
20140198530
Circuit board and flat panel display including the same
Provided are a circuit board for irradiating light to a light guide plate and a flat panel display having a structure for efficiently fixing the circuit board and the light guide plate, the circuit board, including: a support substrate comprising a first area and a second area, the second area being bent from the first area; a plurality of light emitting device mounting parts disposed in the first area; and a protective member connecting part of an outer side of the plurality of light emitting device mounting parts.. .
07/17/14
20140198526
Light guide plate and lighting lamp
A light guide plate (lgp) and a lighting lamp including the lgp. The lgp has no frame and is easy to be spliced together.
07/17/14
20140198524
Light guide plate with v-shaped micro-structures on light output surface
A light guide plate includes a bottom surface and a light output surface opposite to the bottom surface. A number of scattering domes are positioned on the bottom surface.
07/17/14
20140198522
Side-edge backlight module
The present invention provides a side-edge backlight module, which includes a backplane, a backlight source arranged inside the backplane, and a light guide plate arranged inside the backplane. The backplane and the backlight source receive an aluminum-extruded heat sink arranged therebetween.
07/17/14
20140198279
Display apparatus having haze element
A display apparatus comprising a display panel, a light module and a haze element is provided. The light module comprises a light guide plate, a plurality of light guide elements and a first light emitting unit.
07/10/14
20140192554
Illumination device and display device provided therewith
Provided is an illumination device that can suppress uneven brightness in a member to be illuminated caused by the positioning structure of the light guide plate. An illumination device (10) includes light sources (11), a light guide plate (13) that guides light from the light sources, and positioning members (14) that position the light guide plate.
07/10/14
20140192553
Backlight module with light-varying structures formed in a light guide plate
A backlight module is disclosed. A light guide plate includes a main body and a plurality of light-varying structures.
07/10/14
20140192293
Liquid crystal display device
A liquid crystal display device includes: a light guide plate including a front surface, a back surface and an edge surface, the light guide plate being arranged such that the edge surface faces a light source, the light guide plate internally reflecting light incident from the edge surface and causing surface emission from the front surface; a liquid crystal display panel; and a reflective sheet arranged so as to face the back surface of the light guide plate. The back surface includes a first portion and a second portion.
07/03/14
20140185321
Light guide plate and backlight module
A light guide plate includes a plate body and a light incident portion, wherein the plate body has a top plate surface. The light incident portion is formed on a side of the plate body and has a thickness increasing as the light incident portion extends away from a center of the plate body.
07/03/14
20140185320
Optical coupling device and backlight module
An optical coupling device is used for optically coupling light sources with a light guide plate. The optical coupling device includes transparent light guide portions.
07/03/14
20140185319
Backlight module and display apparatus
The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel.
07/03/14
20140185317
Back light unit and image display device using the same
According to one embodiment, an edge light-type back light unit includes, a light source, a light guide plate and a light quantity controller. The light source configured to exit light.
07/03/14
20140185315
Backlight module
The present invention provides a backlight module, which includes a backplane, a backlight source arranged inside the backplane, a reflector plate arranged inside the backplane, a light guide plate arranged on the reflector plate, and a mold frame mounted to the backplane. The mold frame forms a projection.
07/03/14
20140184929
Display device and television receiver
Provided are: a thin display device that has reduced dimensions between a light guide plate and a display panel; and a television receiver provided with the display device. By threading screws, the edge of an opening and a bottom part press, with an elastic member interposed therebetween, the display panel and the light guide plate together.
06/26/14
20140177277
Light guiding plate
A light guide plate includes a light incident surface, a light output surface, a bottom surface opposite to the light output surface, and a plurality of dots formed on the bottom surface. Each dot includes a first curved surface, a second curved surface and two flat surfaces separately interconnecting the first curved surface and the second curved surface.
06/26/14
20140177276
Light guide plate having uniform light emission and backlight module
A light guide plate includes a light emitting surface, a bottom surface opposite to the light emitting surface, a light incident surface, and a side surface opposite to the light incident surface. The bottom surface is imaginarily divided into a plurality of rectangular portions along a direction from the light incident surface to the side surface.
06/26/14
20140177273
Backlight module using laser emitters as light source
A backlight module includes a laser light source and a light guide plate. The light source locates beside a side surface of the light guide plate.
06/26/14
20140177269
Light guide plate having uniform light emission and manufacturing method thereof
A light guide plate includes a main body and a number of micro protrusions. The main body includes a light emitting surface, a bottom surface, and a light incident surface.
06/26/14
20140177198
Light source module and keyboard having the same
A light source module includes a light guide plate, a reflective plate, and at least one light emitting component. The reflective plate is provided at one side of the light guide plate, and the light emitting component is adjacent to the light guide plate.
06/26/14
20140176877
Backlight assembly and liquid crystal display device including the same
Provided is a backlight assembly and a liquid crystal display including: a light source; a light guide plate; and a bottom chassis comprising an accommodating portion, a light source cover configured to accommodate the light source, a first sidewall, and a second sidewall, the accommodating portion comprising a first accommodating portion and a second accommodating portion detachably coupled with each other, wherein the light source cover is formed on a first edge of the first accommodating portion, the first sidewall is formed on a second edge of the first accommodating portion, and the second sidewall is formed on an edge of the second accommodating portion.. .
06/26/14
20140176876
Surface light source device and its light guide plate
A light guide plate has a light introduction part having an end face configured to have light incident thereon, and a light guide plate body disposed continuously to the light introduction part and comprising a thickness smaller than a maximum thickness of the light introduction part. The light guide plate body has a light emitting surface that emits the light incident from the end face.
06/26/14
20140176875
Light guide plate and surface light source device
A light guide plate has a light introducing portion configured to confine light that is incident from an end surface, and a light guide-plate main body configured to emit incident light to an outside from a light emitting surface and provided continuously with the light introducing portion in a thickness smaller than a maximum thickness of the light introducing portion. The light introducing portion has an inclined surface inclined toward the light guide-plate main body from a surface having a larger thickness than a thickness of the light guide-plate main body, on at least one of a surface at a light emission side and a surface opposite to the surface at the light emission side..
06/26/14
20140176874
Light guide plate and surface light source device
A light guide plate has a light introducing portion configured to confine light that is incident from an end surface, and a light guide-plate main body configured to emit incident light to an outside from a light emitting surface and provided continuously with the light introducing portion in a thickness smaller than a maximum thickness of the light introducing portion. The light introducing portion has an inclined surface inclined toward the light guide-plate main body from a surface comprising a larger thickness than a thickness of the light guide-plate main body, on at least one of a surface at a light emission side and a surface opposite to the surface at the light emission side.
06/26/14
20140176873
Light guide plate and surface light source device
A light guide plate has a light introduction part having an end face configured to have light incident thereon, and a light guide plate body provided continuously to the light introduction part and comprising a thickness smaller than maximum thickness of the light introduction part. The light guide plate body has a light emitting surface configured to emit light incident from the end face.
06/26/14
20140176872
Liquid crystal display device
Occurrence of an event can be prevented, whereby, when a backlight expands with heat, a light guide plate might move a group of optical sheets into contact with a middle frame and deform the sheets, thereby causing nonuniformity of luminance on a screen. In particular, a protrusion is formed at an edge of the plate, and the sheets are mounted on the plate to avoid the protrusion.
06/26/14
20140176870
Liquid crystal display device
A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate arranged so as to overlap the liquid crystal display panel, an optical sheet arranged between the liquid crystal display panel and the light guide plate, a frame accommodating the light guide plate therein and facing a circumferential edge portion of the liquid crystal display panel, and an adhesive fixing the circumferential edge portion of the liquid crystal display panel to the frame.
06/26/14
20140176869
Liquid crystal display device
An lcd device includes a liquid crystal panel; a backlight unit disposed at a rear side of the liquid crystal panel and including an led assembly and a light guide plate, wherein the light guide plate has a first surface facing the led assembly and a second surface opposite to the first surface; a cover bottom including a horizontal plane over which the backlight unit is disposed and a side perpendicular to the horizontal plane; a guide panel including a side wall and a horizontal portion, wherein the side wall has a first vertical portion surrounding an outer surface of the side of the cover bottom, and the horizontal portion is vertically bent from the first vertical portion and supports the liquid crystal panel, wherein at least one elastic stopper is formed at the side wall and contacts the second surface.. .
06/26/14
20140176868
Light guide plate with blunt edges
Electronic devices may include displays. A display may include display layers having an array of display pixels and a backlight unit that provides backlight illumination to the display pixels.
06/26/14
20140176864
Backlight unit for liquid crystal display device
A backlight unit for a liquid crystal display device includes a cover bottom including a horizontal plane and sides perpendicular to the horizontal plane; guides disposed at inner surfaces of the sides of the cover bottom and each including first, second and third portions, wherein the second portion protrudes from the first portion, and the third portion protrudes from the second portion and has elasticity; a reflection sheet disposed on the first portions; a light guide plate disposed over the reflection sheet and on the second portions; an led assembly disposed at a first side of the light guide plate; and optical sheets disposed over the light guide plate.. .
06/26/14
20140176861
Backlight unit and liquid crystal display device including the same
A backlight unit according to an embodiment includes: a light guide plate; a light emitting diode (led) assembly supplying a light to the light guide plate; and a reflecting plate under the light guide plate, wherein the led assembly includes: an led printed circuit board (pcb) disposed at a side of the light guide plate; a plurality of led chips over the led pcb, the plurality of led chips spaced apart from each other; a plurality of first lead frames electrically connecting the led pcb and the plurality of led chips; and an led housing surrounding the plurality of led chips and the plurality of first lead frames.. .
06/26/14
20140176860
Light guide plate, backlight module and liquid crystal display device including same
A backlight module includes a light guide plate and a plurality of light sources. The light guide plate includes a light incident part and a flat panel.
06/26/14
20140176851
Display device
The embodiments of this utility model provide a display device, comprising a display panel, a module frame supporting the display panel, and a light guide plate and a heat conducting plate each arranged on the back of the display panel, wherein a supporting plate supporting the module frame is arranged on the heat conducting plate. According to the display device of this utility model, the supporting plate is arranged on the heat conducting plate so as to stably support the bottom of the module frame, thereby to enhance the structural strength, to ensure the display panel to be supported stably and flatly, and to prevent the display panel from being warped or deformed due to the internal or external pressure.
06/26/14
20140176179
Pseudo-solar radiation device
A simulated sunlight irradiation apparatus of the present invention (100a) includes: a light guide plate (5) having an irradiation surface and a counter surface opposite to the irradiation surface; and a light absorbing member (8) which is provided on at least one of an irradiation surface side and a counter surface side of the light guide plate (5) and absorbs light in a predetermined wavelength region.. .
06/19/14
20140169036
Display device and method for fabricating reflective sheet for the same
A display device and a method of fabricating a reflective sheet for the same are provided. The display device includes: a display panel to display an image, a plurality of light emitting diodes (leds) to: generate and supply light to the display panel, a light guide plate to guide the light to the display panel, and a reflective sheet to reflect light toward a cover bottom below the leds toward the light guide plate, the reflective sheet including: a reflective layer, first and second skin layers respectively on upper and lower portions of the reflective layer, the first and second skin layers each including an embossing surface including a plurality of first reflective patterns to: prevent adhesion between the reflective layer and the light guide plate, and increase efficiency of light, and the reflective layer including a plurality of second reflective patterns, each including a filler in an air layer..
06/19/14
20140169035
Light guide plate and backlight module incorporating the same
A light guide plate includes a light incident face, a light exit face adjacent to the light incident face, a bottom face adjacent to the light incident face and opposite to the light exit face, and a plurality of sidewalls beside the light incident face and interconnecting the bottom face and the light exit face. The light incident face is recessed inwardly from an outer periphery of the light guide plate toward an interior of the light guide plate to define a recessed region of the light guide plate.
06/19/14
20140169030
Light guide plate
A light guide plate includes a light incident surface, a light emitting surface, and a number of micro-structures. The micro-structures are arranged on the light emitting surface.
06/19/14
20140169000
Method and equipment for manufacturing light guide plate and light guide plate therewith
In a backlight module, a diffusive structure and a prism structure are replaced by a diffusive prism film formed on a substrate and transferred via in-mold decoration by roller (imr) to a light guide body via injection molding. A reflection film is also transferred to an opposite side of the light guide body via the same way.
06/19/14
20140168949
Direct type backlight and display device
The present invention provides a direct type backlight and a display device provided with the direct type backlight. The direct type backlight includes: a backplate; a printed circuit board fixed on the backplate; a number of led lamp units fixed on the printed circuit board; side frames fixed on inner side walls of the backplate; reflection sheets covering inner wall of cavity formed by the printed circuit board and the side frames, said reflection sheets have lamp holes matching the led lamp units; outer frames fixed on upper sides of the backplate and the side frames; said direct type backlight further including: a silica gel light guide plate which this the cavity formed by the printed circuit board and the side frames to cover the reflection sheets and the led lamp units; and optical film disposed on upper surface of the silica gel light guide plate and located between the upper surface of the silica gel light guide plate and the outer frames.
06/19/14
20140168935
Illuminated keyboard
An illuminated keyboard includes a light source, a key structure, and a backlight membrane switch module. The backlight membrane switch module is disposed under the key structure for generating a key signal and transferring a light beam from the light source to the key structure.
06/19/14
20140168934
Illuminated touch keyboard
An illuminated touch keyboard includes a light source, a key structure, and a non-contact sensor board. The non-contact sensor board is used for sensing a depressing action of the key structure.
06/19/14
20140168864
Electronic device with unified display mounting structures
An electronic device is provided with a display such as a liquid crystal display mounted in an electronic device housing. The display has display layers such as a layer of liquid crystal material, a color filter layer, a thin-film transistor layer, and polarizer layers.
06/19/14
20140168575
Liquid crystal display
A liquid crystal display is described, which includes a backlight module and a liquid crystal display panel. The backlight module includes a light guide plate and a plurality of blue light-emitting diodes adjacent to the light guide plate.
06/19/14
20140168574
Liquid crystal display device
A liquid crystal display device includes a liquid crystal display panel and a backlight disposed on a back surface of the liquid crystal display panel. A light guide plate, a lower diffusion sheet and a lower prism sheet, are accommodated in a mold.
06/19/14
20140168573
Backlight unit and liquid crystal display device comprising the same
Disclosed are a backlight unit and a liquid crystal display device including the same with a light guide plate of a reduced size to enable driving at a low power and manufacture at a low cost despite using fewer light sources, and realizing high-brightness and high quality-driving. The backlight unit includes a lower case having a bottom surface and side walls extending upward extended from edges of the bottom surface.
06/19/14
20140168566
Liquid crystal display module, display device set including the same, and method of assembling liquid crystal display module
A liquid crystal display (“lcd”) module includes a liquid crystal panel, a mold frame provided below the liquid crystal panel and supporting the liquid crystal panel, a light guide plate provided below the mold frame, and a light source assembly coupled to an outside of the mold frame to accommodate the light guide plate therein, the light source assembly partially inserted into the mold frame, and supplying light to the light guide plate.. .
06/19/14
20140168565
Back frame for installing back light source, a back light source and a display device
The embodiments of the present invention provide a back frame for installing back light source, a back light source and a display device. The back frame comprises a frame body having an accommodation space for holding a light guide plate; a light source seat detachably connected to said frame body for placing a light source.
06/19/14
20140168526
Backlight device, display device, and television set
A backlight device (20) is combined with a display device (10) that has a display panel (11), such as a liquid crystal panel. The backlight device includes a chassis (21), a light guide plate (22) and optical sheets (23) arranged on the rear surface of the display panel (11), and an led package (24) that illuminates an edge face of the light guide plate.
06/19/14
20140168162
Touch sensitive display system
A display includes a display area that emits light and a border region surrounding at least a portion of the light emitting region. A light guide plate is overlaying the display area.
06/19/14
20140168087
Illuminated keyboard
An illuminated keyboard includes a key structure, a sensor board, a light source, a light guide plate, an adhesive layer, and a bottom plate. The sensor board includes a key wiring region for sensing a depressing action of the key structure and thereby generates a key signal.
06/19/14
20140166454
Sensing keyboard device with luminous key
A sensing keyboard device includes at least one luminous key, a non-contact sensor board, at least one light-emitting element, a light guide plate, and a bottom plate. When the non-contact sensor board is triggered by the at least one luminous key, at least one key signal is generated.
06/12/14
20140160796
Light guide plate and fabrication method thereof, extrusion equipment, backlight module and display device
The present invention discloses a light guide plate (lgp) capable of bidirectional focusing via a bidirectional micro-transmissive layer, a fabrication method of the lgp, an extrusion equipment, a backlight module and a display device. The lgp comprises a lgp substrate, the lgp substrate comprises at least one incident surface for receiving a light beam and one outgoing surface connected to the at least one incident surface, a bidirectional micro-transmissive layer is provided in the lgp substrate, the bidirectional micro-transmissive layer comprises a plurality of micro-transmissive points having biconvex surfaces.
06/12/14
20140160795
Light guide plate, backlight module and display device both with the light guide plate
A light guide plate, a backlight module and a display device both comprising the light guide plate are disclosed. The light guide plate comprises a light emitting surface and multiple side surfaces perpendicular to and connected to the light emitting surface, the side surfaces including at least one first side surface and at least one second side surface.
06/12/14
20140160794
Backlight source and assembly method of the same
The present invention provides a backlight source and an assembly method of the backlight source. The backlight source includes at least one light source, a printed circuit board, and a light guide plate on which a second alignment mark is arranged.
06/12/14
20140160793
Lighting module
A lighting module comprises a light guide plate including a predetermined pattern; a case covering both sides of the light guide plate; and a light source which is disposed in the case and is configured to emit light to the both sides of the light guide plate, wherein the light guide plate is configured to emit the light from the light source through a top surface and a bottom surface of light guide plate, and wherein the lighting module is configured to emit first light upward from the top surface of the light guide plate, and second light downward from the bottom surface of the light guide plate.. .
06/12/14
20140160792
Backlight module having optical fibers
A backlight module includes a light guide plate, a light source emitting light rays, and an optical fiber group corresponding to the light source. The light source has a light luminance surface.
06/12/14
20140160791
Backlight module and display device
A backlight module and a display device comprise: a light guide plate; a led light bar including a plurality of led lamps arranged at intervals at a side of the light guide plate so as to emit the light to the light-entering surface of the light guide plate, and a gap provided between the led light bar and the light guide plate; and a reflection member arranged outside the gap and reflecting the light from the led light bar toward the light guide plate, wherein first regions and second regions are arranged on the reflection member at intervals, the first regions correspond to positions of the led lamp, the second regions correspond to an interval between the plurality of led lamps and/or a position outside the led lamps at the end of the led light bar, and the first region has a reflective index less than the second region.. .
06/12/14
20140160789
Optical member and display device having the same
Disclosed are an optical member and a display device. The display device includes a light guide plate; a light source on a lateral side of the light guide plate; and a wavelength conversion member between the light source and the light guide plate.
06/12/14
20140160562
Light source device and stereoscopic display
A light source device includes: a light guide plate having first and second internal reflection planes facing each other; a first light source applying first illumination light from a side surface of the light guide plate into an interior thereof; a second light source facing the second internal reflection plane, and applying second illumination light to the second internal reflection plane; and a reflective member between the second internal reflection plane and the second light source. The second internal reflection plane is provided with a total-reflection region allowing the first illumination light to be reflected in a total-internal-reflection manner whereas allowing the second illumination light to pass therethrough, and a scattering region allowing the first illumination light to be reflected and scattered.
06/12/14
20140160397
Blacklight unit, liquid crystal display device having the same and fabrication method thereof
A backlight unit and a liquid crystal display device having the same which may facilitate control of output light through a light guide plate, improve light concentration effect, and reduce moire. The backlight unit includes light sources generating light, a light guide plate guiding light through an incidence surface opposite the light sources, emitting the light through an emission surface, and having lower patterns of a prism shape formed on the lower surface of the light guide plate opposite the emission surface by inclined surfaces and sub-inclined surfaces, and at least one optical sheet stacked on the emission surface..
06/05/14
20140153286
Light guide plate, backlight module and display device
The present invention is directed to a light guide plate, a backlight module and a display device with the light guide plate comprising a bottom surface containing space for holding light sources, a light emitting surface opposite the bottom surface and a quantum dot layer is arranged in the containing space in the direction of the light emitting surface. Since the bottom surface of the light guide plate is provided with the containing space for holding the light sources, and the light sources are limited within the containing space, light diffusion due to the fact that the light sources are positioned outside the light guide plate is reduced, loss of light is reduced, and quantity of the light sources in the backlight module is reduced.
06/05/14
20140153281
Backlight unit and display device
The present invention provides a backlight unit including a light source and a light guide plate, wherein the backlight unit further includes a set of reflectors, the set of reflectors includes a first reflector and a second reflector, the first reflector is arranged at a side of the light guide plate, the second reflector is arranged at the back of the light guide plate, the light source is arranged below the first reflector, the first reflector is used for reflecting light emitted from the light source into the light guide plate, and light exits from the front of the light guide plate after being scattered by the light guide plate and being reflected by the second reflector. Correspondingly, a display device including the backlight unit is provided.


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Light Guide Plate topics: Light Guide Plate, Light Guide, Liquid Crystal, Liquid Crystal Display, Display Panel, Control Unit, Terminal Equipment, Led Substrate, Partitioning, Prism Sheet, Irradiation

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This listing is a sample listing of patent applications related to Light Guide Plate for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Light Guide Plate with additional patents listed. Browse our RSS directory or Search for other possible listings.
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