Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
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Patent number: 8760603Abstract: A backlight unit and a liquid crystal display using the same are disclosed. The backlight unit includes a plurality of light sources generating light, a light source printed circuit board (PCB) on which the plurality of light sources are mounted, a protrusion that protrudes from one side of the light source PCB and is fastened to a connector used to supply a driving power to the plurality of light sources, and a bottom cover that receives the light source PCB and has a through hole through which the protrusion passes. The connector is exposed to the outside through the through hole.Type: GrantFiled: October 13, 2010Date of Patent: June 24, 2014Assignee: LG Display Co., Ltd.Inventors: Youngmin Kweon, Youngeun Lee, Junghoon Park
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Publication number: 20140168575Abstract: 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. The liquid crystal display panel is disposed above the backlight module. The liquid crystal display panel includes a first transparent substrate, a first electrode, a liquid crystal layer, a phosphor powder layer, a color filter, a second electrode and a second transparent substrate stacked above the light guide plate in sequence. The phosphor powder layer includes a plurality of green phosphor powder regions and red phosphor powder regions. The color filter is adjacent to the phosphor powder layer. The color filter includes a plurality of green color filter regions and red color filter regions respectively and correspondingly located, on the green phosphor powder regions and the red phosphor powder regions.Type: ApplicationFiled: March 18, 2013Publication date: June 19, 2014Applicant: RADIANT OPTO-ELECTRONICS CORPORATIONInventor: Yi-Tsuo WU
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Patent number: 8755006Abstract: A back plate includes an inner part, a bottom part, an outer part, a folded part and a fastener. The bottom part is connected to the inner part for providing a container space. The outer part is opposite the inner part. The folded part is connected with the outer part and the inner part. The fastener is disposed on the outer part. A method for manufacturing the back plate is also disclosed herein.Type: GrantFiled: October 19, 2010Date of Patent: June 17, 2014Assignee: Au Optronics CorporationInventor: Chia-Hsin Yu
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Patent number: 8755007Abstract: In a liquid crystal device, when the local dimming is adopted, at a light guide plate of a lighting device, light guide plate portions having a trapezoidal planar shape where two sides facing each other in the Y-axis direction have different lengths are arranged in the X-axis direction to have reverse orientations in the Y-axis direction. A light emitting element emits the light of a light source from the end surface of the light guide plate portion which is located at a short side into the light guide plate portion. A light scattering surface is installed at the space between the light guide plate portions.Type: GrantFiled: June 26, 2012Date of Patent: June 17, 2014Assignee: Seiko Epson CorporationInventor: Yoichi Momose
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Patent number: 8755002Abstract: A backlight assembly includes a light source unit including a circuit board, a light source disposed on a first plane, of the circuit board, and at least one connection unit disposed on a second plane opposite to the first plane of the circuit board and electrically connected to the light source, a receiving container having a bottom plate and sidewalls extending from edges of the bottom plate and receiving the light source unit, the bottom plate including at least one opening portion in which the connection unit is inserted and exposed to the outside, and at least one driving unit disposed at a rear surface of the receiving container and connected to the connection unit for driving the light source unit.Type: GrantFiled: November 21, 2011Date of Patent: June 17, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jin-Hee Park, Bong-Hyun You, Jae-Chang Choi
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Patent number: 8755005Abstract: A backlight includes a waveguide with a plurality of light emitting diodes positioned in cavities in the back surface in a center region of the waveguide. The back surface of the waveguide can be tapered from the center region to the edges so that the edges are thinner than the center region. Additionally, with the light emitting diodes in the center region of the waveguide, as opposed to along the edges, the bezel may be eliminated or at least minimized in height, e.g., 1 mm or less. Additionally, multiple waveguides may be used and configured in a āVā shape to minimize the bezel.Type: GrantFiled: September 24, 2008Date of Patent: June 17, 2014Assignees: Koninklijke Philips N.V., Philips Limileds Lighting Company, LLCInventors: Serge J. Bierhuizen, Gregory W. Eng
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Publication number: 20140160397Abstract: 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.Type: ApplicationFiled: November 26, 2013Publication date: June 12, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Hee-Cheoul Kim, Ju-Young Bang, Dong-Seok Lee, Yeong-Eun Son, Min-Gyu Choi
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Publication number: 20140160392Abstract: The present invention provides an optical fiber for backlight module, the optical fiber being a spiral, including: light-incident part to guide in light, near light-incident part close to light-incident part, and faraway light-incident part away from light-incident part; pitch and/or spiral radius of spiral optical fiber gradually decreasing from near light-incident part towards faraway light-incident part. The present invention also provides backlight module and LCD. With spiral optical fiber to guide in light from light source (e.g., LED or CCFL), backlight module and LCD use optical fiber as backlight source of backlight module to separate light and heat inside backlight module to avoid heat-dissipation problem. As such, the present invention effectively improves life span, optical characteristics and reliability of backlight module. Because light source is not inside backlight module, the known heat-dissipation means can be applied to increase life span of light source.Type: ApplicationFiled: December 19, 2012Publication date: June 12, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Dehua Li, Li-Yi Chen, Shihhsiang Chen
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Patent number: 8749731Abstract: A lighting device including a light source, a light guide plate, a first prism sheet which is arranged over the light guide plate, and a second prism sheet which is arranged between the first prism sheet and the light guide plate. The first prism sheet includes first prisms which are formed parallel to each other in the first direction on a first surface which is opposite to the second prism sheet, and the second prism sheet includes second prisms.Type: GrantFiled: May 22, 2013Date of Patent: June 10, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Tetsuya Oshima, Hirotaka Imayama, Yasuhisa Shiraishi, Yoshiharu Nagae
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Patent number: 8746952Abstract: In an illumination apparatus, a plurality of light-emitting elements are mounted to one surface (a first surface) of a light source substrate. The light source substrate is anchored to a substrate support portion using a screw that is tightened down into the substrate support portion from the opposite side as the light source substrate. Meanwhile, the light source substrate includes a metallic plate that configures another surface (a second surface) and a flexible wiring board that is affixed to the metallic plate on the side of the one surface (the first surface), and a through-hole that passes through the metallic plate is formed, as the hole for tightening down the screw, in the location of the light source substrate in which the screw is tightened.Type: GrantFiled: July 19, 2012Date of Patent: June 10, 2014Assignee: Seiko Epson CorporationInventors: Nobutaka Urano, Yoichi Momose
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Patent number: 8749729Abstract: 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.Type: GrantFiled: February 6, 2009Date of Patent: June 10, 2014Assignee: Sony CorporationInventors: Jun Sasaki, Yasuyuki Kudo, Makoto Aoki, Yosihide Nagata, Mariko Fukuda, Masahiro Ochiai
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Patent number: 8749730Abstract: 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.Type: GrantFiled: February 28, 2012Date of Patent: June 10, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yanxue Zhang
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Publication number: 20140152941Abstract: The present disclosure provides a backlight module and a liquid crystal display (LCD) device, including: a backplane, a light guide panel (LGP) arranged in the backplane, a light source arranged on a side of the backlight module and opposite to the light incident surface of the LGP, and a limit frame arranged at an edge of the LGP to limit movement of the LGP. The limit frame is made of sheet metal, the limit frame is configured with a limit structure and a fixing structure connected to the limit structure, the limit frame is fixed to the backplane by the fixing structure, and the limit structure butts and presses on an edge of the light emitting surface of the LGP.Type: ApplicationFiled: October 25, 2012Publication date: June 5, 2014Inventors: Shihhsiang Chen, Ruilian Yang
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Publication number: 20140152942Abstract: An surface light source device comprises: a light guide plate; a monochromatic light source located at a side of an incidence surface of the light guide plate; a cholesteric liquid crystal film, a ?/4 wave sheet and a wavelength converting thin film sequentially located at a side of an emission surface of the light guide plate. The surface light source device may improve the utilization rate of light and lower the costs.Type: ApplicationFiled: November 13, 2013Publication date: June 5, 2014Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: KIMAN KIM, JAEGEON YOU
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Patent number: 8743338Abstract: A liquid crystal display device is discussed. A liquid crystal display device includes according to an embodiment a liquid crystal panel having a liquid crystal layer formed between a first substrate and a second substrate, a backlight unit comprising a light source part located adjacent to a short side of the liquid crystal panel and a light guide plate configured to transmit a light emitted from the light source part to the liquid crystal panel, a supporting member configured to support the backlight unit, and a first heat radiating member radiating heat generated from the light source part, wherein the first heat radiating member is provided at one side of the supporting member, and is positioned between the light source part and the supporting member. According to the present invention, material cost for the light source part is reduced and production cost may be lowered accordingly.Type: GrantFiled: November 24, 2010Date of Patent: June 3, 2014Assignee: LG Display Co., Ltd.Inventors: Joung Beum Jun, Jong Hyeok Kim
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Patent number: 8743316Abstract: A light guide panel (LGP) for use in a liquid crystal display (LCD) apparatus includes a light-emitting pattern surface on which light-emitting patterns are formed, an opposite surface opposite to the light-emitting pattern surface, and four edge surfaces. Lenticular patterns are formed on one of the light-emitting pattern surface and the opposite surface. The light-emitting pattern surface includes a light-emitting part in which the light-emitting patterns are formed; and an edge part which extends along the four edge surfaces to enclose the light-emitting part and in which at least one fixing groove is formed to fix the LGP. The light-emitting part includes a pattern reducing region which faces the fixing groove and has a lower light-emitting pattern density than an other region of the light-emitting part.Type: GrantFiled: May 7, 2013Date of Patent: June 3, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Myung-ryul Jung, Do-hyeon Baek, Kil-hong Lee, Hyeong-sik Choi
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Patent number: 8743314Abstract: Disclosed are a reflecting plate capable of preventing inferiority of an image quality due to leakage of light emitted from LEDs to outside, a backlight and an LCD device having the same. An extension portion extending towards an LED substrate is formed on a side surface of the reflecting plate, the side surface where the LEDs are arranged. This may shield light emitted from the LEDs and leaked to a space between the LED substrate and the reflecting plate.Type: GrantFiled: December 17, 2010Date of Patent: June 3, 2014Assignee: LG Display Co., Ltd.Inventor: Young-Uk Son
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Patent number: 8743313Abstract: A front frame of a flat panel display having positioning structure allows a LCD cell to be positioned and mounted thereon along an assembly direction. A restraining frame may be further incorporated for positioning and spacing purposes for each component of the display. Optical films, a light guide component, a backlight unit, and a reflector of the flat panel display are then mounted in a row along the assembly direction on the restraining frame or the front frame, where the backlight unit and/or the reflector may be fixed to a back cover of the backlight module in advance. Finally, a speaker, wiring of the display, circuit boards, and a board cover are assembled to the front frame and the back cover.Type: GrantFiled: July 22, 2013Date of Patent: June 3, 2014Assignee: AmTran Technology Co., Ltd.Inventors: I-Chen Cheng, Hung-Tse Wang
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Patent number: 8740441Abstract: A backlight unit includes light emitting diodes (LED's) and light guide plate which guides light from the light emitting diodes to liquid crystal panel and is constructed so that light is emitted from light emission plane of light guide plate opposite to liquid crystal panel toward liquid crystal panel. Area of light emission plane of light guide plate is smaller than effective display area of liquid crystal panel and predetermined shape for diffusing or dispersing light is formed on a lateral side perpendicular to light emission plane of light guide plate and/or at an edge portion near the lateral side of the light emission plane.Type: GrantFiled: November 22, 2011Date of Patent: June 3, 2014Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Shoji Yamamoto, Satoshi Ouchi
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Publication number: 20140146272Abstract: A liquid crystal display device includes a liquid crystal panel, an adhesive member on a lower surface of the liquid crystal panel, a light guide plate below the adhesive member, an optical sheet between the light guide plate and the liquid crystal panel and a dummy film between the light guide plate and the adhesive member, wherein the adhesive member is discontinuous in an area adjacent to the dummy film.Type: ApplicationFiled: July 5, 2013Publication date: May 29, 2014Inventors: Eun Ju Shin, Joo Young Lee
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Publication number: 20140146273Abstract: A display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizer, a second polarizer and a viewing angle control layer. The second substrate faces the first substrate. A liquid crystal layer is disposed between the first substrate and the second substrate. A first polarizer is disposed on a lower surface of the first substrate and includes a first polarizing layer and a second polarizing layer stacked on each other. A second polarizer is disposed on an upper surface of the second substrate. A viewing angle control layer is disposed on the first polarizer and is configured to control a viewing angle of a column direction of the display panel.Type: ApplicationFiled: September 4, 2013Publication date: May 29, 2014Applicant: Samsung Display Co., Ltd.Inventors: SANG-JAE KIM, Boo-Kan Ki, Ji-Hye Kim, Hee-Wook Do, Jae-Won Park, Duck-Jong Suh, Jung-Hun Lee, Hyoung-Joo Lee, Seon-Ah Cho, Hyo-Sung Hong
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Patent number: 8736788Abstract: A liquid crystal display device includes a liquid crystal display panel, a light guide plate disposed on a lower part of the liquid crystal display panel, an LED circuit substrate disposed along at least one side of the light guide plate to accommodate an LED on a front surface thereof, and a heat transmission member having a first part that faces a lower surface of the light guide plate and a second part that is extendedly bent from the first part and faces the LED circuit substrate.Type: GrantFiled: June 12, 2006Date of Patent: May 27, 2014Assignee: Samsung Electronics Co., LtdInventors: Sung Ki Kim, Won-nyun Kim
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Patent number: 8736787Abstract: A liquid crystal panel module, a backlight module and a liquid crystal display (LCD) are provided. The liquid crystal panel module includes a liquid crystal panel and a diffraction grating layer. The liquid crystal panel has a plurality of pixels. The diffraction grating layer is disposed on the liquid crystal panel, and a maximum period of a grating of the diffraction grating layer is smaller than 1/10 of a size of the pixels. The backlight module includes a light guide plate, a light emitting element and a diffraction grating film. A light provided by the light emitting element emits from a light emitting surface of the light guide plate and is bended towards the light emitting element after passing through the diffraction grating film. The liquid crystal panel module and the backlight module can be applied to the LCD together or individually.Type: GrantFiled: January 6, 2011Date of Patent: May 27, 2014Assignees: Chimei Innolux Corporation, Chi Mei Corporation, Klaser Technology, Inc.Inventors: Wang-Yang Li, Hung-Yu Lin, Hsin-Wen Chang, Yi-Pan Liang, Chien-Chih Wang, Wai-Hon Lee, Hua-Fang Tsai
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Patent number: 8730430Abstract: A light-emitting element substrate mounting light-emitting elements is arranged on a front face of a chassis. The light-emitting element substrate is connected to a first connector. A power supply substrate for supplying electric power to the light-emitting element substrate is arranged on a rear face of the chassis. A second connector is connected to the power supply substrate. In addition, the first and the second connectors are connected to each other, so that the power supply substrate supplies electric power to the light-emitting element substrate via the first connector and the second connector. The second connector may electrically be connected to the power supply substrate via a harness.Type: GrantFiled: March 21, 2011Date of Patent: May 20, 2014Assignee: Japan Aviation Electronics Industry, LimitedInventor: Takeharu Naito
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Patent number: 8730431Abstract: The backlight has an anisotropic diffusion sheet disposed between the reflective polarizing plate and the optical path converter. The anisotropic diffusion sheet includes a refractive index anisotropic diffusion sheet stretched in an absorption axis direction in which a concave-convex portion is formed on a surface of the reflective polarized plate, and an isotropic material part laminated on a surface of the concave-convex part. The isotropic material part has an isotropic reflective index. The refractive index of the isotropic material part is the same as the refractive index in the transmission axis direction perpendicular to a stretching direction of the refractive index anisotropic sheet.Type: GrantFiled: September 8, 2011Date of Patent: May 20, 2014Assignee: Japan Display Inc.Inventors: Tatsuya Sugita, Masaya Adachi
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Publication number: 20140132848Abstract: A backlight device 24 of the present invention includes: a chassis 22 that has a bottom plate 22a, and a side wall 22b that rises on the front side of the bottom plate 22a from an edge of the bottom plate 22a; a light guide plate 20 that has a light-receiving face 20a, a light-exiting surface 20b, and an opposite surface 20c, and that is arranged such that the opposite surface 20c faces the surface of the bottom plate 22a; an LED substrate 30 that is arranged on the surface the bottom plate 22a and that abuts the side wall 22b; an LED light source 28 arranged on a front face of the LED substrate 30; a frame 14 arranged above the light-exiting surface 20b of the light guide plate 20; a first inclined portion 31 that is provided on the frame 14 and that inclines from the light guide plate 20 side towards the side wall 22b and from the bottom plate 22a side towards the light-exiting surface 20b; and a first abutting portion 41 that is arranged on the LED substrate 30 and that has a least a portion thereof abuttiType: ApplicationFiled: July 13, 2012Publication date: May 15, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Hirokazu Mouri
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Publication number: 20140132889Abstract: A color deviation balance thin film, a side-type backlight module and a liquid crystal display device. The color deviation balance thin film is applied to the side-type backlight module and the thickness of the color deviation balance thin film is gradually reduced along the backlight irradiation direction. The color deviation balance thin film is arranged in the side-type backlight module and the side-type backlight module with the color deviation balance thin film is arranged in the liquid crystal display device. When the side-type backlight module with the color deviation balance thin film is applied to the liquid crystal display device, the intensity difference of light at different positions along the backlight irradiation direction can be reduced, and the problem of the color deviation generated in the display picture can be effectively improved.Type: ApplicationFiled: November 1, 2012Publication date: May 15, 2014Applicant: BOE TECHNOLOGY GROUP CO., LTDInventor: Dejun Li
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Publication number: 20140132888Abstract: In order to prevent unevenness in planar light and reduce power consumption, a backlight unit A that emits planar light towards a front side thereof has a light-shielding part 500 provided on a package 50 at least on a front side of the backlight unit. The package 50 has an LED module 5 that surrounds an LED chip 51 that is a light source, and the light-shielding part 500 protrudes towards a light receiving face 22 of a light guide plate 2.Type: ApplicationFiled: June 8, 2012Publication date: May 15, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Kentaro Kamada
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Publication number: 20140132887Abstract: A light guide plate has an end surface configured to have light incident thereon, a light introduction part that confines light incident through the end surface, and a light guide plate body disposed to be continuously joined to the light introduction part. The light guide plate body has a thickness smaller than a maximum thickness of the light introduction part. The light guide plate body outputs the incident light to an outside from a lighting region through a light exit part. The light introduction part includes an inclined surface in at least one of a light-exit-side surface and an opposite surface of the light-exit-side surface. The directivity change pattern changes directivity of the light passing to the lighting region from the light introduction part.Type: ApplicationFiled: February 8, 2013Publication date: May 15, 2014Applicant: OMRON CORPORATIONInventor: Gouo Kurata
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Patent number: 8721153Abstract: A back reflector for a lightguide in a turning film backlight includes a prism film layer in direct contact with a reflective layer. The lightguide includes a light guiding region having a refractive index that is substantially spatially uniform. The reflective layer may be specular or diffuse and may include a multilayer polymeric film.Type: GrantFiled: December 3, 2008Date of Patent: May 13, 2014Assignee: 3M Innovative Properties CompanyInventors: Brian A. Kinder, Gary T. Boyd, Stephen K. Eckhardt, Chun-Yi Ting, Han-Lin Tung, Linda M. Rivard, Tao Liu
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Patent number: 8724049Abstract: Provided is a backlight unit within a liquid crystal display (LCD) device where the backlight unit includes one or more light-emitting diodes (LEDs) mounted on a printed circuit board (PCB). Positioning of the PCB and its LEDs is provided by a PCB fixing member which includes a base portion and a support portion extending upward from a surface of the base portion. The PCB fixing member is structured to transfer heat energy away from the PCB and to an attached portion of the LCD device such as to a lower housing which houses the PCB and the PCB fixing member. The PCB fixing member includes a press-fit insertion groove into which at least part of the PCB can be easily inserted, thus simplifying manufacturing while assuring appropriate heat dissipation.Type: GrantFiled: October 8, 2010Date of Patent: May 13, 2014Assignee: Samsung Display Co., Ltd.Inventor: Kwang-Jin Jeong
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Patent number: 8724047Abstract: The invention provides an LCD device, and the LCD device comprises a front frame, a middle frame, and a back frame in sequence from outside to inside. A light guide panel is arranged between the back frame and the middle frame. A cavity is formed by the middle frame, the back frame, and the light guide panel, and a light source assembly is arranged in the cavity. The middle frame is provided with a middle frame through hole communicated with the cavity, and the front frame is provided with a front frame through hole communicated with the middle frame through hole. Because the middle frame and the front frame of the invention are respectively provided with through holes, the heat accumulated in the cavity is directly dissipated to the outside through air convection. Compared with the heat dissipation mode of using conduction and air convection, the heat dissipation mode of the invention has the advantages of directness, simplicity, and convenience, thereby having preferable heat dissipation effect.Type: GrantFiled: March 16, 2012Date of Patent: May 13, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Gang Yu
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Patent number: 8721159Abstract: To improve a workability in assembling and disassembling of parts of a lighting device. A backlight unit 12 includes an LED board 18 having LEDs 17, a chassis 14, a light guide member 19 having an end portion arranged to face the LEDs 17, a power supply board 21 arranged outside the chassis 14 and supplying drive power to the LEDs 17, and a connector 20 mounted to the chassis 14 and supplying power between the power supply board 21 and the LEDs 17. The connector 20 includes an LED board supporting portion 20a that supports the LED board 18, a power supply board supporting portion 20b having a plate surface along which the power supply board 21 is inserted into and removed from and that supports the inserted power supply board 21, and a connection terminal 28 that comes in contact with the power supply board 21 with allowing relative slide in an inserting and removing direction of the power supply board 21.Type: GrantFiled: December 10, 2010Date of Patent: May 13, 2014Assignee: Sharp Kabushiki KaishaInventor: Yoshiki Takata
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Publication number: 20140125920Abstract: The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel. The backlight module comprises a light collector, optical fibers, a fiber light-outputting substrate and a light guide plate. The optical fibers are connected between the light collector and the fiber light-outputting substrate. The light guide plate is disposed at one side of the fiber light-outputting substrate. The light guide plate includes light diffusion recessions, and the light diffusion recessions face the light-outputting openings of the fiber light-outputting substrate. The present invention can use ambient light rays to form a backlight source.Type: ApplicationFiled: November 22, 2012Publication date: May 8, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Chechang Hu, Hu He
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Publication number: 20140125922Abstract: An edge-light type backlight device includes: a light guide plate that is housed in a frame-shaped member; a long wiring substrate 60 that is positioned at least on one side face of the light guide plate; a plurality of point-shaped light sources 80 that are positioned in the wiring substrate 60; and a rectangular heat spreader 70 that is positioned along the wiring substrate 60 and that dissipates the heat of the wiring substrate 60. The wiring substrate 60 and the heat spreader 70 are fixed to each other by screws 65 that are disposed on both ends in the lengthwise direction of the heat spreader 70, and are adhered to each other via a double-sided adhesive tape 75 that is positioned in the central portion of the heat spreader 70 in the lengthwise direction thereof.Type: ApplicationFiled: May 30, 2012Publication date: May 8, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Kentaro Terashima
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Publication number: 20140125921Abstract: An area light source device has a transfer-molded optical member, and a light source disposed in a position facing at least one of end faces of the optical member. Light incident to the optical member from the light source is output through a light exit surface of the optical member. A cutting back clearance portion is provided in at least one of corner portions of the end face of the optical member.Type: ApplicationFiled: February 8, 2013Publication date: May 8, 2014Applicant: OMRON CORPORATIONInventors: Koichi Takemura, Gouo Kurata, Yoshihisa Yamanaka, Masayuki Kojima, Morihisa Ota
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Publication number: 20140125919Abstract: The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel. The backlight module comprises a light collector, at least one optical fiber bundle, a fiber light-outputting substrate, a light guide plate and a fiber holding plate. The optical fiber bundle is connected between the light collector and the fiber light-outputting substrate. The light guide plate is disposed at one side of the fiber light-outputting substrate, and the fiber holding plate is configured to hold optical fibers of the optical fiber bundle. The present invention can use ambient light rays to form a backlight source.Type: ApplicationFiled: November 22, 2012Publication date: May 8, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Shih Hsiang Chen, Li-Yi Chen, Dehua Li, Guofu Tang
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Patent number: 8714805Abstract: A display apparatus includes a light source and a light guide plate including a light incident surface facing the light source and which receive the light, an opposite surface opposite to the light incident surface and which reflects the light and has an arc shape, connection surfaces at opposing sides of the light incident surface and which connect the light incident surface and the opposite surface, an upper surface connected to the light incident surface, the opposite surface and the connection surfaces and which outputs the light, and a lower surface opposite to the upper surface. The light incident surface of the light guide plate includes a first surface extending in a predetermined direction, and second surfaces inclined from the first surface in an area corresponding to the light source such that an optical recess having a polygonal pyramid shape is defined by the second surfaces.Type: GrantFiled: January 5, 2012Date of Patent: May 6, 2014Assignee: Samsung Display Co., Ltd.Inventors: Guk Hyun Kim, Oleg Prudnikov, Youngchan Kim, Byoungho Cheong
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Patent number: 8717514Abstract: An illumination device (3) is provided with a light-emitting diode (light source) (9), and a light guide plate (10) that guides light from the light-emitting diode (9) toward a prescribed propagation direction and that outputs the light toward a liquid crystal panel (object to be irradiated) (2). The illumination device is also provided with an optical sheet (optical member) (15) that is disposed so as not to make contact with the optical sheet (13) and that separates the optical sheet (13) from the liquid crystal panel (2) so as to create a prescribed space therebetween.Type: GrantFiled: September 27, 2010Date of Patent: May 6, 2014Assignee: Sharp Kabushiki KaishaInventors: Kazunori Minoura, Katsutoshi Kikuchi
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Patent number: 8717515Abstract: Provided is an LED substrate capable of being downsized in width. In addition, provided are LED substrates that can be disposed laterally in an efficient fashion. Each LED substrate (20) has a configuration that two single terminal connectors of a light-source-side substrate connector (single terminal connector) 40 including a light-source-side terminal 41 and a ground-side substrate connector (single terminal connector) 50 including a ground-side terminal 51 are included and disposed at right and left ends of each LED substrate so as to sandwich therebetween a plurality of LEDs (21) connected in series.Type: GrantFiled: November 18, 2010Date of Patent: May 6, 2014Assignee: Sharp Kabushiki KaishaInventor: Mitsuru Hosoki
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Patent number: 8708538Abstract: A vehicle lamp includes a plurality of light sources, and a light guide plate configured to emit light to the front side of the lamp from a second surface facing a first surface by internally reflecting light, which is emitted from the respective light sources, by a plurality of reflective elements formed on the first surface after causing the light to enter the light guide plate from a rear end face of the light guide plate. The light guide plate is curved to the first surface and gradually becomes thinner toward the front side. The reflective elements are disposed at a predetermined interval in a longitudinal direction and extend in a direction crossing the longitudinal direction.Type: GrantFiled: June 28, 2012Date of Patent: April 29, 2014Assignee: Koito Manufacturing Co., Ltd.Inventors: Kazunori Natsume, Hiroya Koizumi
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Patent number: 8711306Abstract: A liquid crystal display device includes a light transmitting substrate arranged on a parallax barrier liquid crystal panel; a light blocking frame formed on the light transmitting substrate; and a frame positioned in a state where the frame faces an end surface of a light guide plate. The light blocking frame is formed to cover a portion of the frame arranged adjacent to the light guide plate and a portion of the frame outside the portion The frame includes a body made of a material which reflects some of light incident on the body and allows some of the light to pass through the body, and a light blocking film formed on a portion of a surface of the body on a liquid-crystal-display-panel side which projects from the liquid crystal display panel while avoiding a surface of the body which faces the light guide plate.Type: GrantFiled: June 8, 2012Date of Patent: April 29, 2014Assignee: Japan Display Inc.Inventors: Eiji Oohira, Yuka Kuwajima
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Publication number: 20140111697Abstract: Provided is an illumination device that is capable of improving the utilization efficiency of light, while being lighter and thinner. This illumination device (10) is provided with: a light source (11) that emits ultraviolet light; a light guide plate (14) that guides the light from the light source; an optical member (15) placed between the light source and the light guide plate and that allows ultraviolet light emitted from the light source to pass through and that reflects visible light; and a fluorescent member (16) that is arranged between an ultraviolet light incident surface (15d) of the optical member and the light guide plate and that converts the ultraviolet light into visible light.Type: ApplicationFiled: April 3, 2012Publication date: April 24, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Kentaro Terashima
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Patent number: 8704964Abstract: A liquid crystal display device includes: a bottom frame having a bent portion at an edge thereof; a light guide plate over the bottom frame, the light guide plate spaced apart from the bent portion by a gap; a light emitting diode (LED) assembly facing a side of the light guide plate, the LED assembly fixed to the bent portion; a main frame having a rectangular band shape over the bottom frame, the main frame having a rib corresponding to the gap; a liquid crystal panel over the light guide plate; and a top frame surrounding a front boundary portion of the liquid crystal panel, the top frame combined with the bottom frame and the main frame.Type: GrantFiled: December 3, 2009Date of Patent: April 22, 2014Assignee: LG Display Co., Ltd.Inventors: Young-Bin Lee, Chung-Oan Seo
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Patent number: 8704974Abstract: A backlight assembly of a Liquid Crystal Display (LCD) is provided with improved heat dissipation capabilities. The improved dissipation capabilities come from one or more light-sourcing unit fixing frames that have extensions which protrude to outside a housing that houses light sourcing units of the LCD. The light-sourcing unit fixing frames mechanically interlock with the housing.Type: GrantFiled: October 1, 2010Date of Patent: April 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Cheol-Yong Noh, Jae-Chang Choi, Seong-Sik Choi
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Patent number: 8704972Abstract: A connector for a light source module includes a body portion and a terminal portion. The body portion includes a first opening portion and a second opening portion. The first opening portion receives a portion of the light source module. The second opening portion receives a portion of a light source driver which drives the light source module. The terminal portion includes a first terminal and a second terminal. The first terminal is in the first opening portion of the body portion. The second terminal is connected to the first terminal. The second terminal is in the second opening portion of the body portion.Type: GrantFiled: July 13, 2011Date of Patent: April 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jin-Won Jang, Moon-Shik Kang, Young-Sup Kwon, Min-Soo Choi, Seung-Wan Kim
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Patent number: 8704968Abstract: A liquid crystal display (LCD) includes an outer cover, a backlight module, a liquid crystal panel, and a bezel. The backlight module includes a reflection sheet, a light guide plate (LGP), an edge reflector, and a light source. The reflection sheet is disposed on the outer cover and faces the outer cover. There is an interval between the outer cover and the reflection sheet. The LGP is stacked on the reflection sheet and the edge reflector is disposed on the outer cover, wherein a containing space is defined by the outer cover and the edge reflector. The light source is disposed in the containing space. The liquid crystal panel is stacked on the LGP. The bezel is assembled to the outer cover. The outer cover and the bezel enclose the backlight module and the liquid crystal panel and the bezel exposes the liquid crystal panel.Type: GrantFiled: August 6, 2010Date of Patent: April 22, 2014Assignee: Coretronic CorporationInventor: Yin-Jen Lin
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Patent number: 8704801Abstract: A touch display apparatus including a light guide plate, a light emitting module, a display panel, a plurality of prism structures, an image transmission unit, and an image detector is provided. The light guide plate has a first surface, a second surface opposite to the first surface, and a light incident surface connecting the first surface and the second surface. The light emitting module includes at least one visible light source and at least one invisible light source. The prism structures are disposed between the first surface and the display panel. The image transmission unit includes a wedge portion and a light guide portion. The wedge portion is disposed between the prism structures and the display panel. The image detector is disposed beside the light guide portion for receiving the invisible light beam from the light guide portion. A backlight module is also provided.Type: GrantFiled: September 15, 2010Date of Patent: April 22, 2014Assignee: Coretronic CorporationInventors: Han-Wen Tsai, Fu-Ming Chuang
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Publication number: 20140104542Abstract: The present invention provides a light guide plate for emitting light radiated from a light source disposed at a side of the light guide plate. The light guide layer has a light incidence side for internally introducing light emitted from the light source at the side thereof; a polarization separation layer comprising a first matrix layer and a first fiber having birefringence and disposed more toward the light emission side than the light guide layer; a low refractive index layer having a lower refractive index than the refractive index of the first matrix layer; and an angle improvement layer comprising a second matrix layer having a second fiber disposed inside the second matrix layer.Type: ApplicationFiled: October 17, 2013Publication date: April 17, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hideki IMAMURA, Atsuki UEDA, Reina IWASAKI, Yoshihiro YOKOTE
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Patent number: RE44949Abstract: Laser lit flat panel displays are disclosed including edge-lit and direct lit backlights. In certain embodiments, laser assemblies are selected to obtain bandwidth distributions to reduce speckle.Type: GrantFiled: December 17, 2012Date of Patent: June 17, 2014Assignee: Corporation for Laser Optics ResearchInventor: Masayuki Karakawa