Reflector Having Particular Shape Behind Light Source Patents (Class 349/67)
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Patent number: 7855762Abstract: A liquid crystal module includes: a first support part for receiving and affixing ends of a plurality of lamps; an optical plate disposed above an upper surface of the first support part; a second support part for retaining the optical plate and having a lower surface above the optical plate, wherein the upper surface of the first support part or the lower surface of the second support part has a recessed portion contacting the optical plate such that a gap is formed between the optical plate, and one of the upper surface of the first support part and the lower surface of the second support part.Type: GrantFiled: November 14, 2008Date of Patent: December 21, 2010Assignee: LG Display Co., Ltd.Inventor: Dong Im Huo
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Publication number: 20100309412Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: December 9, 2010Inventor: David E. Paul
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Patent number: 7841730Abstract: A light source comprising sidelight type backlight light guide plate (L), wherein a transmittance angle dependent layer (T1) which transmits normally incident light and reflects obliquely incident light is disposed on one surface of the sidelight type backlight light guide plate (L), and a reflection plate (R) having a repetitive slope structure is disposed on the other surface of the sidelight type backlight light guide plate (L). The invention light source is less in absorption loss due to repetition of light reflection and the like.Type: GrantFiled: August 20, 2004Date of Patent: November 30, 2010Assignee: Nitto Denko CorporationInventors: Kazutaka Hara, Naoki Takahashi, Kentarou Takeda, Miki Shiraogawa
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Patent number: 7834955Abstract: A technology for effectively preventing deformation of a light reflector plate fabricated by forming a synthetic resin reflector plate into a three-dimensional shape enabling a thinner light reflector plate, and additionally, reducing processing costs is provided. An adhesive tape for shape-retention is adhered onto a reflector plate which is fabricated by forming predetermined areas of a light-reflecting plastic film or sheet into a three-dimensional shape.Type: GrantFiled: January 7, 2005Date of Patent: November 16, 2010Assignee: The Furukawa Electric Co., Ltd.Inventors: Osamu Suzuki, Yoshiyuki Nousou, Nobuyuki Morita, Kazuya Nagashima
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Publication number: 20100283717Abstract: A display device for performing image display by irradiating light from a light source to a display panel includes a transparent EL sheet which is disposed at aback surface side of the display panel and kept transparent in a non-luminous state, a reflection sheet which reflects the light from the light source to the display panel, a display control unit which controls the image display on the display panel, and a light emission control unit which controls light emission on the transparent EL sheet, wherein when the light emission control unit brings at least a part of a surface of the transparent EL sheet into a luminous state corresponding to the image display on the display panel controlled by the display control unit, an emitted light is irradiated to the display panel together with the light from the light source and the light reflecting from the reflection sheet.Type: ApplicationFiled: June 18, 2008Publication date: November 11, 2010Inventors: Hidekazu Oka, Takashi Morimoto
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Patent number: 7821094Abstract: A light emitting diode structure has a silicon substrate, a conductive layer, and a light emitting diode. The top surface of the silicon substrate has a cup-structure like paraboloid, and the bottom of the cup-structure has a plurality of through-holes penetrating the silicon substrate. The conductive layer fills up the through-holes and protrudes out from the through-holes. The light emitting diode is disposed on the top of the conductive layer protruding out from the through-holes and is located at the focus of the cup-structure.Type: GrantFiled: October 8, 2008Date of Patent: October 26, 2010Assignee: Touch Micro-System Technology Inc.Inventors: Hung-Yi Lin, Hong-Da Chang
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Patent number: 7821593Abstract: A backlight module includes a frame, a lamp stationary barrier, and at least one lamp. The lamp stationary barrier has at least one side wall formed by oblique lines. The lamp is disposed in the frame, and at least a portion of an electrode end of the lamp is covered by the side wall. The oblique side wall may effectively improve the luminance uniformity of the backlight module, and thus a liquid crystal display using this backlight module has good display quality.Type: GrantFiled: June 19, 2008Date of Patent: October 26, 2010Assignee: Chimei Innolux CorporationInventor: Han-Ping Lin
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Patent number: 7821595Abstract: A backlight module includes a frame, an optical element, a bottom plate, a holder, and a light source. The optical elements are located on the frame and a space between the sidewall of the frame and the optical elements. The bottom plate located under the optical elements. The light source is on the holder inserted into the space, The holder is inserted into the space along the direction toward the bottom surface of the bottom plate, and is removed from the space along the opposing direction.Type: GrantFiled: June 2, 2010Date of Patent: October 26, 2010Assignee: Au Optronics CorporationInventors: Therm-Hoo Ke, Ying-Feng Hsu, Chi-Chun Yang, Li-Chuan Yu, Tzu-Yi Liu, Tung-Liang Shao, Tung-I Yen, Shih-Chang Chang
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Patent number: 7816192Abstract: The present invention relates to a thin film transistor substrate and a fabricating method thereof. The thin film transistor according to one embodiment of the present invention comprises: a gate wire and a data wire formed to cross each other on an insulating substrate and define a pixel area; a thin film transistor formed on the intersection of the gate wire and the data wire; an inorganic insulating layer covering the thin film transistor and having a surface that a prominence and depression pattern formed on; and a reflective layer provided on the prominence and depression pattern. Thus, the present invention provides a thin film transistor substrate and a fabricating method thereof, which reduce the time required in the process and enhance the productivity.Type: GrantFiled: December 26, 2007Date of Patent: October 19, 2010Assignee: LG Display Co., Ltd.Inventor: Hyun-Ho Kim
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Patent number: 7815330Abstract: A backlight assembly, which can provide enhanced light emitting efficiency, and a display device, are provided. The backlight assembly includes a light generating unit comprising a substrate and a point light source connected to the substrate, and a receiving container positioned to receive light from the light generating unit, the receiving container comprising an embossing that corresponds to the point light source.Type: GrantFiled: January 11, 2008Date of Patent: October 19, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jeom-oh Kim, Gi-cherl Kim, Se-ki Park, Eui-jeong Kang, Seok-won Kang, Yong-hoon Kwon
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Patent number: 7808580Abstract: In a backlight assembly, a reflector member includes a base sheet reflecting a light and a connecting line disposed on a face of the base sheet and, and transmitting signals. An input pad is disposed at a first end portion of the connecting line and receives the signals, and an output pad is disposed at a second end portion of the connecting line and outputs the signals transmitted through the connecting line.Type: GrantFiled: October 18, 2007Date of Patent: October 5, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Si-Joon Song, Eun-Chae Jeon, Gi-Cherl Kim, Byung-Choon Yang, Young-Keun Lee, Eun-Jeong Kang
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Patent number: 7808581Abstract: A backlight apparatus includes a point source of radiant electromagnetic energy. A total internal reflection (TIR) lens has a vertical central axis located along a path of the radiant electromagnetic energy. The TIR lens receives and evenly distributes the radiant electromagnetic energy at an output face. The radiant electromagnetic energy exiting the TIR lens is substantially collimated and defines vertical optical paths parallel to the vertical central axis. A first diffuser receives the radiant electromagnetic energy from the output face of the TIR lens and spreads the radiant electromagnetic energy to a predetermined first angle relative to the vertical optical paths.Type: GrantFiled: January 18, 2008Date of Patent: October 5, 2010Assignee: Teledyne Lighting and Display Products, Inc.Inventors: George Panagotacos, David G. Pelka
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Patent number: 7808475Abstract: Backlight support is provided for flat panel displays through use of phospho-luminescent materials. Photo-luminescent materials are integrated into a flat panel display such as an LCD display as a back panel substrate or by embedding in display pixels. When ambient light levels exceed a predetermined threshold the material is activated allowing a reduction in active backlight power. The active backlight may be provided by an electrically supported system such as an ELP, a light pipe, an LED, etc. By reducing the power of the active backlight in an analog manner or through decreasing the duty cycle, an overall power savings is accomplished for the display. By embedding different photo-luminescent materials that operate at different wavelengths, color display may be enhanced while reducing power consumption. Display properties, such as transparency, contrast, etc., may be adjusted to affect phospho-luminescent backlight support.Type: GrantFiled: April 12, 2007Date of Patent: October 5, 2010Assignee: Microsoft CorporationInventor: Shawn M. Brown
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Patent number: 7804561Abstract: A cyan-colored composition for a color filter contains a phthalocyanine blue pigment comprising either of C.I. Pigment Blue 15:3 and C.I. Pigment Blue 15:4, or both, a phthalocyanine green pigment comprising C.I. Pigment Green 7, and a pigment carrier consisting of a transparent resin, a precursor of the resin or a mixture thereof. A color filter includes a red-colored filter segment, a green-colored filter segment, a blue-colored filter segment, and a cyan-colored filter segment or a yellow-colored filter segment.Type: GrantFiled: January 10, 2007Date of Patent: September 28, 2010Assignee: Toppan Printing Co., Ltd.Inventors: Hiroshi Sasaki, Kazunori Yamada, Yusuke Iida, Noriko Asashi
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Publication number: 20100238380Abstract: Disclosed are a backlight unit and a display apparatus having the same. The backlight unit comprises a light guide plate receiving light and outputting the light, a light emitting unit comprised at an one end portion of the light guide plate, a fixing frame comprising an opened interior, in which the light emitting unit and the light guide plate are comprised in the opened interior, and a reflection frame comprised at an outer side of the fixing frame and reflecting leaked light.Type: ApplicationFiled: August 16, 2007Publication date: September 23, 2010Applicant: LG DISPLAY CO., LTD.Inventor: Jae Hong Kim
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Patent number: 7796234Abstract: A device display includes a light guide with an optical fiber embedded in an optically transparent material, a pixel array that has a pixel aligned with a first end of the optical fiber, and a reflective mechanism provided at a second end of the optical fiber. The reflective mechanism is capable of reflecting light, received by the pixel, back to the pixel via the optical fiber.Type: GrantFiled: April 23, 2007Date of Patent: September 14, 2010Assignee: Sony Ericsson Mobile Communications ABInventors: Mats Kleverman, Gunnar Klinghult, Mats Wernersson
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Patent number: 7791683Abstract: A backlight system for a liquid crystal display includes a substantially planar, refractive waveguide having a first major face and a second major face opposite the first major face. The waveguide includes a viewable region corresponding to a viewable area of the liquid crystal display. The system further includes a light source positioned proximate to the second major face and within the viewing region for producing light. An injection feature is proximate to one or more of the second major face and the first major face and within the viewing region to optically couple the light into the waveguide such that the light becomes waveguided light. A plurality of extraction features is proximate to one or more of the second major face and the first major face and within the viewing region to optically couple the waveguided light out of the waveguide.Type: GrantFiled: November 19, 2007Date of Patent: September 7, 2010Assignee: Honeywell International Inc.Inventors: Brent D. Larson, Dennis M. Davey, Elias S. Haim
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Patent number: 7787073Abstract: A backlight unit includes a plurality of lamp array units, each having a plurality of LED lamps evenly arranged in one direction, a reflecting substance formed on an upper surface of each of the LED lamps to reflect light emitted from the corresponding LED lamp in a lateral direction, a light dispersion member provided over the lamp array units, and an outer case supporting the light dispersion member.Type: GrantFiled: December 28, 2005Date of Patent: August 31, 2010Assignee: LG Display Co., Ltd.Inventor: Ju Young Bang
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Patent number: 7787076Abstract: As a shape on a cross-section vertical to a longitudinal direction (L) of the hot cathode fluorescent lamp (20a (20b)), a light source rear side reflecting plane (62) of a reflector (60) includes a mound portion (623). The mound portion (623) is defined by two recessed inclining planes and protrudes toward a hot cathode fluorescent lamp (20a (20b)).Type: GrantFiled: July 21, 2006Date of Patent: August 31, 2010Assignee: Tohoku UniversityInventors: Tadahiro Ohmi, Yasuyuki Shirai, Kiwamu Takehisa
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Publication number: 20100214510Abstract: A backlight unit 77 includes a fluorescent tube 1, a backlight chassis 3 and a reflective sheet 4. The reflective sheet 4 is subjected to adjustment processing such that a high-brightness side of a brightness difference in the reflected light in the Y direction is brought close to a low-brightness side of the brightness difference.Type: ApplicationFiled: May 27, 2008Publication date: August 26, 2010Inventor: Yasumori Kuromizu
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Publication number: 20100208171Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes: a light emitting diode substrate on which light emitting diodes are mounted; a reflection sheet that is provided on the light emitting diode substrate and has holes formed therein, each of the light emitting diodes being provided inside each of the holes; and lenses provided on the light emitting diodes, for diffusing light from the light emitting diodes. Each of the lenses is larger than the each of the holes, and entirely covers the each of the holes and also covers a part of the reflection sheet including an entire periphery of the each of the holes.Type: ApplicationFiled: February 19, 2010Publication date: August 19, 2010Inventors: Sachiko YAMAZAKI, Ryutaro OKE, Ikuko IMAJO, Masashi BABA
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Publication number: 20100208168Abstract: The present invention provides a liquid crystal display device which can reduce the number of cables so as to prevent the occurrence of the brightness irregularities. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes an LED substrate on which a plurality of LEDs are mounted, a reflection sheet which is arranged on the LED substrate, a diffusion plate which is arranged in a spaced-apart manner from the LED substrate, side supports which support the diffusion plate at end portions of the LED substrate, connectors which are provided for electrical connection with an external device, and electronic parts which are electrically connected with at least one of these LEDs. The connectors and the electronic parts are mounted on the LED substrate below the side supports. The side supports exhibit higher light reflectance than the connectors and the electronic parts.Type: ApplicationFiled: February 19, 2010Publication date: August 19, 2010Inventors: Ryutaro OKE, Masashi Baba
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Patent number: 7773173Abstract: It is to suppress the interference of the reflected light easily and securely even in a highly fine liquid crystal display device. The reflection plate comprises recessed or protruded parts and a reflection film formed over the recessed or protruded parts. A unit shape of the recessed or protruded parts is a polygon, an arbitrary point other than a centroid of the polygon that constitutes the recessed or protrude part is placed at a position that meets with an orderly-mannered lattice point as an origin, and each of the unit-shape polygons is arranged at a position that is rotated randomly with respect to the origin.Type: GrantFiled: July 23, 2007Date of Patent: August 10, 2010Assignee: NEC LCD Technologies, Ltd.Inventors: Akio Kobayashi, Yasuki Kudo, Kenichirou Naka
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Publication number: 20100194724Abstract: A liquid crystal display device comprises a liquid crystal display panel; and a backlight. The backlight includes: a plurality of fluorescent lamps arranged in parallel in a plane parallel to the liquid crystal display panel; a housing for supporting each of the plurality of fluorescent lamps; and a plurality of blue light emitting elements each disposed between the housing and the plane in which the plurality of fluorescent lamps are arranged in parallel. The plurality of blue light emitting elements are arranged at positions overlapped with the plurality of fluorescent lamps when projected onto a plane parallel to a surface of the liquid crystal display panel from a direction perpendicular to the surface of the liquid crystal display panel, to thereby prevent yellowing from occurring in white color tone of the backlight.Type: ApplicationFiled: January 29, 2010Publication date: August 5, 2010Inventor: Takayuki OTA
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Patent number: 7760284Abstract: A liquid crystal device includes a liquid crystal panel; light sources; a light guide plate, opposed to the light sources, for guiding light emitted from the light sources to the liquid crystal panel; a flexible printed circuit board electrically connected to the liquid crystal panel; and a housing accommodating the liquid crystal panel and the light guide plate. The flexible printed circuit board is fixed to the rear face of the light guide plate in such a state that the flexible printed circuit board is curved. The liquid crystal panel is fixed to the housing with a light-shielding double-faced tape placed outside a display region including a sub-region containing the light sources. The light sources are spaced from the light-shielding double-faced tape with an adhesion-preventing member disposed therebetween or adhesion-preventing treatment is performed.Type: GrantFiled: March 7, 2007Date of Patent: July 20, 2010Assignee: Epson Imaging Devices CorporationInventor: Tetsuji Murase
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Publication number: 20100171904Abstract: A backlight module includes a plate and a plurality of light sources. The plate has a first surface and a second surface opposite to the first surface. The plate is bent to form a plurality of first grooves on the first surface and a plurality of second grooves on the second surface. The light sources are respectively disposed in the first grooves and the second grooves. The backlight module is capable of providing two plane light sources to different directions and has thinner thickness. A double-sided liquid crystal display using the above-mentioned backlight module is also provided.Type: ApplicationFiled: April 10, 2009Publication date: July 8, 2010Inventors: Mau-Yuan Hung, Sheng-Chieh Lung, Teng-Piau Peng
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Publication number: 20100165241Abstract: A backlight unit for a display device includes a light guide plate; a reflective sheet under the light guide plate; a lamp at least one side of the light guide plate and providing a light into the light guide plate; and an optical sheet disposed on the light guide plate and including a first lenticular sheet, the first lenticular sheet including a base film for diffusing the light through the light guide plate, a first lenticular lens disposed on a front surface of the base film and having a half-cylinder shape and a first printing pattern on at least one edge of a rear surface of the base film.Type: ApplicationFiled: September 3, 2009Publication date: July 1, 2010Inventors: Sung-Hun Kim, Hyeok-Joon Yoon, Byoung-Ku Kim, Jae-Hyun Park
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Patent number: 7746422Abstract: An exemplary liquid crystal display device (100) includes a first frame (11), a liquid crystal panel (12), a backlight unit (13) for providing uniform light for the liquid crystal panel, and a second frame (14) cooperating with the first frame to define a space receiving the liquid crystal panel and the backlight unit. The backlight unit includes a reflector (17) and a lamp (16) received in the reflector. The reflector includes a hook (175). The second frame includes a through hole (145). The hook engages in the through hole, thereby facilitating the fixing of the reflector to the second frame.Type: GrantFiled: August 20, 2007Date of Patent: June 29, 2010Assignee: Innolux Display Corp.Inventor: Chih-Chung Hsiao
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Publication number: 20100157201Abstract: An LCD device is disclosed. The LCD device is configured to include a plurality of insulation films between a balancely printed circuit board and a bottom cover and to form a plurality of air layers between the plurality of insulation films. Accordingly, noise caused by vibrations from electric currents flowing through lamps can be minimized.Type: ApplicationFiled: November 5, 2009Publication date: June 24, 2010Inventors: Kwan Sik Moon, Jung Hong Park
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Publication number: 20100141869Abstract: A passive daylight-coupled display having an LCD panel, a diffuser, and a curved reflector behind the LCD panel. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. A hybrid display includes both a passive backlight and an active backlight for providing backlighting from an active light source.Type: ApplicationFiled: December 8, 2008Publication date: June 10, 2010Inventors: Rolf W. Biernath, Jennifer R. Yi, Keith M. Kotchick, John S. Huizinga
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Patent number: 7733436Abstract: 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.Type: GrantFiled: March 1, 2008Date of Patent: June 8, 2010Inventor: Yuto Suzuki
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Patent number: 7733439Abstract: A front light guide panel including a plurality of embedded surface features is provided. The front light panel is configured to deliver uniform illumination from an artificial light source disposed at one side of the font light panel to an array of display elements located behind the front light guide while allowing for the option of illumination from ambient lighting transmitted through the light guide panel. The surface embedded surface relief features create air pockets within the light guide panel. Light incident on the side surface of the light guide propagates though the light guide until it strikes an air/light material guide interface at one on the air pockets. The light is then turned by total internal reflection through a large angle such that it exits an output face disposed in front of the array of display elements.Type: GrantFiled: April 30, 2007Date of Patent: June 8, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Jeffrey B. Sampsell, Russell W. Gruhlke, Mark Mienko, Gang Xu, Ion Bita
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Patent number: 7728924Abstract: An exemplary backlight module (2) includes a light guide plate (21) and a light source (23). The light guide plate includes a main body, a protrusion (217) extending from an end of the main body, a main light emitting surface (211), and a light incident surface (215) at the end of the main body. Wherein one side of the protrusion forms a part of the light emitting surface, another side (2171) of the protrusion is adjacent to the light incident surface. The protrusion and the light incident surface cooperatively form an accommodating space. The light source is substantially received in the accommodating space.Type: GrantFiled: October 16, 2007Date of Patent: June 1, 2010Assignee: Innolux Display Corp.Inventor: Yu-Cheng Cheng
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Patent number: 7724322Abstract: 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.Type: GrantFiled: September 20, 2007Date of Patent: May 25, 2010Assignee: Sharp Laboratories of America, Inc.Inventors: Xiao-Fan Feng, Scott J. Daly
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Patent number: 7719633Abstract: A light source apparatus capable of being reduced in size and thickness and superior in light combining performance includes a prism sheet unit having two mutually parallel prism surfaces each having a plurality of mutually parallel fine prism rows. The prism rows on the two prism surfaces intersect each other at a predetermined angle in plan view. A plurality of light sources are disposed at the light entrance surface side of the prism sheet unit to emit light so that the light is incident on the light entrance surface of the prism sheet unit at a predetermined angle thereto. The lights from the light sources are combined or color-mixed together by passing through the two prism surfaces, and the resulting combined or color-mixed light is emitted as exiting light.Type: GrantFiled: December 21, 2007Date of Patent: May 18, 2010Assignee: Citizen Electronics Co., Ltd.Inventor: Koya Noba
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Publication number: 20100110341Abstract: A backlight device in which a reflector can be easily taken in and out and can be efficiently replaced by preventing friction between a casing and the reflector from occurring when the reflector is assembled in the device and variation of optical characteristics after the assembling can be suppressed. In order to provide such a backlight device, the cross sectional shape of the reflector is gradually reduced in its inserting direction.Type: ApplicationFiled: December 7, 2007Publication date: May 6, 2010Inventor: Eiji Nittou
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Publication number: 20100110342Abstract: The present invention provides a light redirecting article for redirecting light toward a target angle, the light redirecting article comprising: an input surface comprising a plurality of light redirecting structures. Each light redirecting structure has (i) a near surface having two slopes, sloping away from normal in one direction as defined by a first inclination base angle ?1, a second inclination angle ?2, and a first half apex angle ?2, for accepting incident illumination over a range of incident angles and (ii) a far surface sloping away from normal, in the opposite direction relative to the input surface, as defined by a second base angle ?1 and a second half apex angle ?1. In addition, light redirecting structures has (b) an output surface opposing to the input surface, wherein the near and far surfaces are opposed to each other at an angle (?1+?2), and the base angle ?1 is greater than or equal to 90 degrees.Type: ApplicationFiled: November 4, 2009Publication date: May 6, 2010Applicant: SKC Haas Display Films Co., Ltd.Inventors: Xiang-Dong Mi, Xinyu Zhu, Jehuda Greener
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Patent number: 7710515Abstract: In order to solve the problem that sufficient center brightness is not always obtained in a conventional liquid crystal TV and a liquid crystal monitor, a backlight module of the invention includes a plurality of cold cathode fluorescent lamps (CFL) and a diffusing reflector below, the distance between the respective CFLs is arranged so that a central portion is narrow and an end portion is wide, and the backlight module includes a triangular sectional projection structure on at the diffusing reflector only between the CFLs between which the distance is the widest, in the end portion. According to the invention, enhancement of the center brightness without increasing consumption power, reduction in the number of CFLs, and cost reduction accompanying it are achieved.Type: GrantFiled: September 27, 2006Date of Patent: May 4, 2010Assignee: Hitachi Display, Ltd.Inventors: Tetsuya Ohshima, Hitoshi Taniguchi, Takayuki Ota, Fumihiko Hieda, Naotoshi Sumiya
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Publication number: 20100103347Abstract: A display for illuminating a liquid crystal display panel with laser light of uniform light quantity distribution, and an illuminator for irradiating with laser light of uniform light quantity distribution are provided. The display includes a liquid crystal display panel 204, laser light sources 205, 206, 207 emitting laser light having wavelengths of green, red, and blue colors, a waveguide plate 201 arranged at the back side of the liquid crystal display panel 204 and performing multiple reflection of laser light, and a diffusion plate 202 arranged at the back side of the waveguide plate 201, diffusing laser light propagating in the waveguide plate 201 and emitting the light toward liquid crystal display panel 204.Type: ApplicationFiled: July 26, 2006Publication date: April 29, 2010Inventors: Kiminori Mizuuchi, Kazuhisa Yamamoto, Shin-ichi Kadowaki, Tetsuro Mizushima, Akihiro Morikawa
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Publication number: 20100085511Abstract: A display device of the present invention includes: a display panel 100a including a plurality of pixels arranged in a matrix; a lighting device 50 including a light source 30 and a light guide plate 31 for outputting light toward the front; and a plurality of light condensing elements 54a placed between the display panel and the lighting device.Type: ApplicationFiled: November 9, 2007Publication date: April 8, 2010Inventors: Hisashi Watanabe, Takashi Sato
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Publication number: 20100079702Abstract: The disclosed subject matter includes providing a surface light source device using a plurality of different color light-emitting chips that can emit light with uniform color and a LCD unit having the same qualities. The surface light source device can include a light guide having a light incoming surface and a light-emitting surface, and light sources including the light-emitting chips located adjacent the light incoming surfaces. The light-emitting surface can include a light-mixing area that is spaced a distance L away from the light incoming surface, and the widest interval between the adjacent light-emitting chips is configured to be L/27 or less. Light emitted from the light sources can generate a mixture light with very little color variability in the light-mixing area, and the light can be emitted from the light-emitting surface other than the light-mixing area. Therefore, the LCD unit that includes a LCD located toward the light guide can illuminate the display with uniform color light.Type: ApplicationFiled: September 29, 2009Publication date: April 1, 2010Inventors: Takahiro Ito, Naoya Sone
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Patent number: 7688402Abstract: A backlight module includes a light box and multiple real light sources. The light box has an opening and a plurality of substantially parallel grooves recessed from a bottom surface thereof. Each of the slots has a reflection curved surface. A light source allocation line is defined between every two adjacent grooves. The light source allocation lines are parallel to the grooves. The sum of shortest distances between any point of the reflection curved surface and the two adjacent light source allocation lines is substantially the same. In addition, the real light sources are alternately allocated in the light source allocation lines. A part of light emitted from each light source is reflected from the reflection curved surface to the light source allocation line in which no light source is allocated. Thereby, a virtual light source is formed on the light source allocation line that does not contain a real light source.Type: GrantFiled: February 27, 2006Date of Patent: March 30, 2010Assignee: Chi Mei Optoelectronics Corp.Inventors: Kuo-Tsun Huang, Chen-Pin Hung
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Patent number: 7679697Abstract: An exemplary backlight module (11) includes a light guide plate (12), a reflector (18), and a light emitting diode unit (142). The light guide plate has a light incident surface (122). The reflector is positioned adjacent to the light incident surface, and has a reflection pattern (184) thereat. The light emitting diode unit is interposed between the light incident surface and the reflector.Type: GrantFiled: October 26, 2006Date of Patent: March 16, 2010Assignee: Innolux Display Corp.Inventors: Wei Wang, An Shih
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Publication number: 20100053505Abstract: An object of the present invention is to provide a backlight for a liquid crystal display device which is easy to repair and prevents the brightness from lowering on the screen, and thus can provide high-quality images, where the region where point light source elements are aligned is divided into a number of smaller regions, and backlight units are provided so as to correspond to the respective smaller regions, as well as a liquid crystal display device using the same.Type: ApplicationFiled: August 26, 2009Publication date: March 4, 2010Inventors: Sachiko YAMAZAKI, Ryutaro Oke, Ikuko Imajo
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Patent number: 7671940Abstract: A dual panel display has a housing, a first display panel, a second display panel, and a backlight module positioned between the first display panel and the fixing face of the housing. The backlight module includes a light guide panel, a light source, at least a transflective film and at least an optical property enhancement film between the light guide panel and the second display panel. The transflective film is positioned between the light guide panel and the fixing face for reflecting a part of light from the light guide sheet so that the part of light passes back into the light guide panel.Type: GrantFiled: March 23, 2006Date of Patent: March 2, 2010Assignees: Innocom Technology (Shenzhen) Co., Ltd., Innolux Display Corp.Inventors: Rui-Yong Li, Chuan-Pei Yu
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Publication number: 20100045899Abstract: Backlit LCD displays are becoming commonplace within many vehicle applications. The unique advantage of this invention is that it optimizes system power savings for display of low dynamic range (LDR) images by dynamically controlling spatially adjustable backlighting. This is accomplishes through use of a control technique that takes into account the sequential nature of the video display process.Type: ApplicationFiled: August 22, 2008Publication date: February 25, 2010Applicant: GENTEX CORPORATIONInventor: Harold C. Ockerse
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Patent number: 7667787Abstract: The present invention is directed to a transmission type liquid crystal display apparatus using a backlight device for delivering rays of display light which have been emitted from a large number of light emitting diodes to a transmission type display panel, wherein an optical sheet block (10) is provided between a liquid crystal panel (5) and a light source unit (7) including a large number of LEDs (12), the transmission type liquid crystal display apparatus comprising a light diffusion plate (15), consisting of resin, having light transmitting characteristic, which is adapted control incidence of rays of display light which have been emitted from the respective LEDs (12). At the light diffusion plate (15), light adjustment patterns (18) facing the respective LEDs (12) and adapted to take a shape which has dimensions including outer shape thereof and is longitudinally elongated are formed by light reflection ink.Type: GrantFiled: August 5, 2005Date of Patent: February 23, 2010Assignee: Sony CorporationInventors: Kazutoshi Mahama, Masato Hatanaka
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Patent number: 7665859Abstract: A backlight assembly for a liquid crystal display device includes a plurality of first light sources at a first distance from an optical sheet, a plurality of second light sources at a second distance from the optical sheet, and a reflecting sheet disposed behind the first and second light sources, in which the first distance and the second distance are substantially different.Type: GrantFiled: December 27, 2005Date of Patent: February 23, 2010Assignee: LG Display Co., Ltd.Inventor: Dae-San Lim
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Patent number: 7667788Abstract: An illumination system for a flat panel display device includes: a light guide plate made of an optically isotropic material; a light source disposed at a side of the light guide plate; an upper layer disposed on a top surface of the light guide plate and made of an optically anisotropic material; and a polarization selection emitting structure which is disposed at an interface of the light guide plate and the upper layer. The upper layer has two different refractive indices and one of the two refractive indices is the same as a refractive index of the light guide plate. In the polarization selection emitting structure differently polarized light is differently refracted, reflected, diffracted, or scattered based on polarization direction.Type: GrantFiled: August 7, 2006Date of Patent: February 23, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Moon-gyu Lee, Seung-ho Nam, Seong-mo Hwang, Young-chan Kim, Dong-ho Wee, Kyung-yeup Kim
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Patent number: 7651258Abstract: In a backlight assembly and a flat panel display apparatus, the backlight assembly has a diffusing plate, a supporting member and a reflecting plate. The supporting member has a base body portion, a supporting portion supporting the diffusing plate and a lamp holder receiving lamps to uniformly maintain spaced intervals between the lamps. The base body portion is disposed under the reflecting plate. The supporting portion and the lamp holder are inserted through engaging openings formed at the reflecting plate such that the supporting portion and the lamp holder are upwardly protruded with respect to the reflecting plate. Accordingly, the backlight assembly may reduce an area of the reflecting plate covered by the supporting member, thereby providing the light having uniform brightness distribution.Type: GrantFiled: September 14, 2007Date of Patent: January 26, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Yong-II Kim