With Plural Diverse Light Sources (e.g., For Day And Night) Patents (Class 349/68)
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Patent number: 7639317Abstract: A backlight unit of a liquid crystal display device includes a mold frame having a receiving space for receiving a reflection sheet, a prism sheet a diffusion sheet, a plurality of light-emitting diodes, and a shielding tape for affixing the reflection sheet, the prism sheet, the plurality of light-emitting diodes and the diffusion sheet within the receiving space, wherein a first color is colored at a plurality of first colored areas at a lower surface of the shielding tape corresponding to the plurality of light-emitting diodes and a second color is colored at a remaining area of the lower surface of the shielding tape other than the plurality of first colored areas.Type: GrantFiled: December 18, 2006Date of Patent: December 29, 2009Assignee: LG Display Co., Ltd.Inventor: Ki Hyun Cho
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Patent number: 7623197Abstract: A flat screen comprises a liquid-crystal element, such as an LCD element, for representing an image. Further, a plurality of point light sources, such as LEDs, are provided. Between the point light sources and the liquid-crystal element a light-guiding element is arranged. For rendering the brightness distribution more uniform, the light-guiding element comprises at a surface thereof a plurality of diffractive surface elements arranged in cells.Type: GrantFiled: March 3, 2006Date of Patent: November 24, 2009Assignee: Nanogate Advanced Materials GmbHInventor: Martin Klenke
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Patent number: 7614758Abstract: A backlight for a color liquid crystal display apparatus includes a first light-guide plate; a first incidence part for receiving light of a first primary color in a first area on a first lateral surface of the first light-guide plate; a second incidence part for receiving light of a second primary color light in a second area on a second lateral surface that is opposite to the first lateral surface of the first light-guide plate; and a third incidence part for receiving light of a third primary color in a third area on a rear surface of the first light-guide plate. The number of superposition steps is thereby reduced, light-guide plates can easily be superposed onto an LCD panel with high accuracy, and a lightweight and inexpensive backlight for a color liquid crystal display apparatus can be obtained.Type: GrantFiled: December 1, 2006Date of Patent: November 10, 2009Assignee: NEC LCD Technologies, Ltd.Inventor: Mitsuasa Takahashi
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Publication number: 20090267879Abstract: A liquid crystal display device includes a liquid crystal display panel for performing color display, and a backlight unit that includes RGB-LEDs and white LEDs. The RGB-LEDs and the white LEDs are different from each other in color difference between a white point and each primary color point in the respective images displayed on the liquid crystal display panel when the RGB-LEDs and the white LEDs are individually turned on. Further, the light source includes a backlight control section arranged to select one type of the light-emitting elements to emit light, so that the color difference in an image display on the liquid crystal display panel is smaller when the image has a higher lightness.Type: ApplicationFiled: June 8, 2007Publication date: October 29, 2009Applicant: SHARP KABUSHIKI KAISHAInventor: Takeshi Masuda
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Patent number: 7609248Abstract: A luminance control apparatus of a liquid crystal display device (LCD) is presented. The LCD includes a liquid crystal display panel divided into areas, lamps, an arithmetic unit, and a lamp driver. Fewer lamps are present than the number of areas. The arithmetic unit scans pixels of each area, extracts a peak value of the gray level of pixels of the area, and calculates a maximum peak brightness value and an average value of the area. The lamp driver controls the brightness of the lamps in accordance with the average value and the maximum peak brightness value.Type: GrantFiled: June 10, 2005Date of Patent: October 27, 2009Assignee: LG. Display Co., Ltd.Inventors: Hee Jung Hong, Kyung Joon Kwon
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Publication number: 20090262280Abstract: Provided is a liquid crystal display (LCD) without a color filter, the LCD including: a liquid crystal panel comprising front and rear glass substrates and a plurality of red, green, and blue liquid crystal subpixels disposed between the front and rear glass substrates corresponding to red, green, and blue lights, respectively; a backlight unit disposed in rear of the liquid crystal panel and comprising a plurality of three-color light supply units supplying the red, green, and blue lights, respectively, and separated from one another so that the plurality of three-color light supply units are compartmentalized; and a lenticular lens array disposed between the liquid crystal panel and the backlight unit, inducing the red, green, and blue lights irradiated by the three-color light supply units into the red, green, and blue liquid crystal subpixels included in the liquid crystal panel and comprising a plurality of lenticular lens groups comprising a plurality of lenticular lenses, wherein the plurality of lentiType: ApplicationFiled: March 19, 2009Publication date: October 22, 2009Inventor: Jin-Hyuk Kwon
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Patent number: 7605881Abstract: An LCD apparatus includes a backlight array in which a plurality of light emitting devices illuminate an LCD panel with a plurality of colors; a backlight driver driving each light emitting device to emit light and adjust light intensity; a signal analyzer analyzing an input video signal and outputting transform objective information on the basis of an analyzed result; and a controller controlling the backlight driver to adjust a display state of a picture displayed on the LCD panel on the basis of the transform objective information from the signal analyzer. A picture is displayed on an LCD panel to have wide range colors of color coordinates and includes a backlight unit having a short response time. A display state of a picture displayed on the LCD panel is adjusted by analyzing an input video signal and controlling a backlight unit.Type: GrantFiled: April 19, 2005Date of Patent: October 20, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-suk Kim, Jin-bog Kim
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Publication number: 20090256795Abstract: A power-saving display system without color filter is disclosed to include a backlight panel, a LED backlight set controlled to emit a first light source, a second light source, and/or a third light source to the backlight panel, a LCD panel disposed at a top side of said backlight panel, and a video signal controller controlled to output a first monochrome video image, a second monochrome video image, and/or a third monochrome video image to the LCD panel for synthesizing into a color video image for display on the LCD panel.Type: ApplicationFiled: October 31, 2007Publication date: October 15, 2009Inventors: Soshchin Naum, Wei-Hung Lo, Chi-Ruei Tsai
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Publication number: 20090251638Abstract: A multi-view liquid crystal display for different users to watch different images from different viewing angles is provided. The multi-view liquid crystal display includes a liquid crystal display panel, a first backlight module and a second backlight module. The first backlight module is disposed below the liquid crystal display panel. The second backlight module is disposed between the first backlight module and the liquid crystal display panel. Furthermore, the first backlight module provides a first plane light source and the second backlight module provides a second plane light source. An included angle ? formed between transmitting directions of the first and the second plane light sources ranges from 6 degrees to 176 degrees. Therefore, when different users watch the multi-view liquid crystal display which displays different images from different viewing angles, the resolutions of the images are the same as the resolution of the multi-view liquid crystal display panel.Type: ApplicationFiled: July 28, 2008Publication date: October 8, 2009Applicant: Au Optronics CorporationInventors: Shih-Chia Hsu, Chih-Jen Hu
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Publication number: 20090251627Abstract: The present invention provides a liquid crystal display device which can more improve a luminance when the liquid crystal display device includes a column spacer. The present invention is a liquid crystal display device including a pair of substrates and a liquid crystal layer interposed between the pair of substrates, and the liquid crystal display device having a red pixel, a green pixel, and a blue pixel, wherein a column spacer structure is arranged in the red pixel among three pixels of the red, green, and blue pixels, and the red pixel has the smallest aperture ratio of the three pixels.Type: ApplicationFiled: September 20, 2007Publication date: October 8, 2009Inventors: Ikumi Itsumi, Fumikazu Shimoshikiryoh, Masae Kawabata
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Publication number: 20090244440Abstract: An optical compensation film to be used in a VA mode liquid crystal display device, having retardation in plane at a wavelength of 550 nm, Re(550), falling within the range from 20 to 100 nm, and retardation along thickness direction at a wavelength of 550 nm, Rth(550), falling within the range from 60 to 120 nm, is disclosed. And a VA-mode liquid crystal display device having the optical compensation film, disposed between the liquid crystal cell and each of the pair of polarizing elements, is disclosed.Type: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: FUJIFILM CorporationInventor: Yusuke OHASHI
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Patent number: 7591579Abstract: A light source module includes a light guide plate having a light incident surface receiving light and a light emitting surface emitting the received light, a board arranged adjacent to the light guide plate and having a light source mounting surface, at least one first light source disposed on the light source mounting surface of the board to provide a first light to the light incident surface of the light guide plate, and at least one second light source disposed on both sides of the light source mounting surface adjacent to the first light source to provide a second light toward the first light source.Type: GrantFiled: September 13, 2007Date of Patent: September 22, 2009Assignee: LG Display Co., Ltd.Inventor: Moon Soo Yeom
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Patent number: 7588362Abstract: A backlight assembly, a display device provided with the backlight assembly, and a method of assembly the backlight assembly are provided. The backlight assembly includes a light source unit having a light source emitting light and a fixing member fixing the light source unit. The light source unit is inserted from an outer side of the fixing member into an opening portion formed in the fixing member to emit light through the opening.Type: GrantFiled: June 5, 2006Date of Patent: September 15, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Mun-Soo Park, Min-Gyu Kim
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Publication number: 20090219463Abstract: A light emitting diode (LED) package includes a base, a body and several LED chips. The body having an end surface is disposed on the base. A peripheral recess is formed in the end surface. The LED chips are disposed on a bottom of the peripheral recess for providing sidelight of the LED package. The LED package is connectable to a light guide pipe including a column having an external circumferential surface and an internal reflection surface, and a plurality of prism structures disposed between or on at least one of the external circumferential surface and the internal reflection surface for scattering light received by the light guide pipe from the LED package.Type: ApplicationFiled: May 15, 2009Publication date: September 3, 2009Applicant: CHI MEI OPTOELECTRONICS CORP.Inventor: Chen-Pin HUNG
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Patent number: 7583332Abstract: A color-fliterless liquid crystal display device includes a plurality of pixel units, each pixel unit includes a first sub-pixel and a second sub-pixel. The liquid crystal display device includes a plurality of light sources, each for emitting light having various wavelength ranges. A guide plate contains a first reflective surface and a second reflective surface for guiding light having various wavelength ranges toward the first and second sub-pixels.Type: GrantFiled: October 24, 2007Date of Patent: September 1, 2009Assignee: AU Optronics Corp.Inventor: Seok-Iyul Lee
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Patent number: 7580089Abstract: A liquid crystal display device including a backlight module, a liquid crystal display device panel and a second frame is provided. The backlight module includes a first frame. The first frame includes a first body, first fasteners and baffles. The first fasteners and the baffles are arranged on a sidewall of the first body. The liquid crystal display device panel is arranged on the backlight module. The second frame is assembled with the first frame for fixing the liquid crystal display device panel, and includes a second body and second fasteners arranged on a sidewall of the second body. The first fasteners fasten with the corresponding second fasteners, to limit the relative displacement between the first and second body along a first direction, and the baffles are adapted for limiting the relative displacement between the first and second body along a second direction.Type: GrantFiled: October 31, 2005Date of Patent: August 25, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chung-Hsing Ho, Yao-Tung Wang
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Patent number: 7575357Abstract: A backlight system and an LCD using the same are provided. The present backlight system is equipped with a light-source driving module and several light sources of different optimum working temperature ranges. Hence, according to the environmental temperature, appropriate light source(s) will be driven by the light-source driving module to maintain a constant light output of the backlight system.Type: GrantFiled: April 19, 2005Date of Patent: August 18, 2009Assignee: AU Optronics CorporationInventors: Meng-Chai Wu, Chin-Kun Hsieh
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Patent number: 7576811Abstract: A planar light source unit includes a metal frame retaining a light source panel provided with an light guide for inducing emission of light from a light source and a plastic frame that supports at least part of a peripheral edge of the light guide. The outer peripheral surface of the plastic frame with a fitting structure between the metal frame and the plastic frame and an outer frame portion contiguous to the support plate portion and sandwiched between the fixing means and the outer frame portion of the metal frame. A liquid crystal display panel is provided with a display region in which plural display pixels are arrayed and the planar light source unit.Type: GrantFiled: March 30, 2007Date of Patent: August 18, 2009Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventor: Ida Kazushige
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Patent number: 7553061Abstract: A side type backlight module including a first light guide plate (LGP), a plurality of second LGPs, a plurality of red point light sources, a plurality of green point light sources, and a plurality of blue point light sources is provided. The first LGP has a first light emitting surface, a bottom surface, and a first light incident surface connecting the first light exit surface and the bottom surface. The second LGPs are disposed beside the first light incident surface. Further, a plurality of red, green, and blue point light sources is respectively disposed beside the second LGPs. The lights emitted by the red point light sources, the green point light sources, and the blue point light sources are blended to be a white light by each of the second LGPs and then incident to the first light incident surface.Type: GrantFiled: July 23, 2006Date of Patent: June 30, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Wei-Yu Chang, Ju-Yi Hsieh, Chih-Chun Hsiao
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Publication number: 20090161039Abstract: A backlight device includes a first substrate having optical transparency and having a first surface and a second surface. An LED thin-film is fixed to the first surface of the first substrate. The LED thin-film is formed of epitaxially grown inorganic material layers as a P-N junction device. An anode electrode and a cathode electrode are formed on the LED thin-film. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film. An anode wiring is provided for connecting the anode driver IC and the anode electrode, and a cathode wiring is provided for connecting the cathode driver IC and the cathode electrode. A second substrate has optical transparency and having a function to diffuse incident light. The second substrate is provided so as to face the second surface of the first substrate.Type: ApplicationFiled: December 22, 2008Publication date: June 25, 2009Applicant: OKI DARA CORPORATIONInventors: Hiroshi Toyama, Yukio Nakamura
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Publication number: 20090147184Abstract: A liquid crystal display (LCD) including a backlight module and a liquid crystal display panel is provided. The backlight module has at least one white light source. BL1 and BL2 respectively represent relative maximum brightness peaks of an emission spectrum of the backlight module at a wavelength between 500 nm and 525 nm and between 530 nm and 560 nm, in which BL1/BL2?0.32. The liquid crystal display panel is disposed above the backlight module, and has two substrates and a liquid crystal layer sandwiched therebetween. One of the two substrates has a red filter layer, a green filter layer, and a blue filter layer, in which transmittances of the red filter layer and the green filter layer at wavelength of approximately 590 nm are both smaller than about 45%.Type: ApplicationFiled: March 12, 2008Publication date: June 11, 2009Applicant: AU OPTRONICS CORPORATIONInventors: Chun-Chieh Wang, Yu-Hui Chou, Hsueh-Ying Huang, Chen-Hsien Liao
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Patent number: 7545455Abstract: A liquid crystal display device is provided. The LCD device includes a top case, an inverter and a bracket. The top case surrounds a periphery of a liquid crystal display panel which displays a picture. The inverter supplies a high voltage AC power to a lamp which projects a light to the liquid crystal display panel. The bracket fastens to the top case and includes at least two fastening parts for insertion of opposite ends of the inverter, thereby reducing fabrication times for devices implementing the present invention and improving productivity.Type: GrantFiled: September 20, 2004Date of Patent: June 9, 2009Assignee: LG Display Co., Ltd.Inventor: Yong Sang Kim
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Patent number: 7545461Abstract: A liquid crystal display device comprising a liquid crystal display panel, a backlight and a heat sink member is disclosed. The backlight comprises a light-guiding plate disposed on one principal surface side of the liquid crystal display panel, LED light sources disposed on an end surface of the light-guiding plate, a mounting board for mounting the LED light sources thereon and a thermally conductive member connected to the mounting board. The heat sink member is connected to the mounting board through the thermally conductive member.Type: GrantFiled: July 25, 2006Date of Patent: June 9, 2009Assignee: Kyocera CorporationInventors: Hisao Kondo, Katsumi Tsuchida, Hisashi Narita, Shigenori Oota
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Publication number: 20090140972Abstract: A light source assembly includes a light source which emits light; a detector which detects the light and generates a light signal based on a property of the light; an operator operably connected to the detector and which receives the light signal and calculates a color coordinate of the light source based on the light signal; a comparator operably connected to the operator and which compares the color coordinate of the light source to a predetermined reference color coordinate; and a control unit operably connected to the comparator and which controls a pulse width modulation signal transmitted to the light source based on a result of the comparison of the comparator.Type: ApplicationFiled: November 20, 2008Publication date: June 4, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Se-Ki PARK, Gi-Cherl KIM, Sang-Il PARK, Jung-Hyeon KIM
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Patent number: 7540632Abstract: A lighting assembly topology that utilizes spectrum controlling materials to render the illumination compatible with night vision imaging systems. The lighting assembly can be used as either a general illumination source or can be used as a backlight for a transmissive display such as a liquid crystal display. The lighting assembly makes use of spectral filtering which is both transmissive and absorptive for specific spectral regions. The exit port of the lighting assembly is completely filtered with a red and near infrared reflective filter. The absorption of the near infrared spectrum to which NVIS are sensitive is reflected by the typical near infrared reflective filter covering the exit port and absorbed within the material lining the housing of the lighting assembly.Type: GrantFiled: November 21, 2006Date of Patent: June 2, 2009Assignee: Honeywell International Inc.Inventors: Randy M. Maner, Michael R. Praiswater
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Patent number: 7537371Abstract: The backlight device includes a plurality of packages, and a light guide plate. The package includes a housing for package, and a plurality of light sources. The housing for package includes a tubular part having a wall surrounding the circumference, a bottom wall provided at one end of the tubular part, and a passing part provided at the other end of the tubular part for passing the light from inside to outside of the tubular part. The plurality of light sources are contained in the housing for package and disposed in the bottom wall, and emit light. The plurality of packages are arrayed in one direction. At least part of the layout of light sources relative to the incident plane is different from mutually adjacent packages.Type: GrantFiled: December 28, 2007Date of Patent: May 26, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Naotada Okada, Toshitake Kitagawa
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Patent number: 7535524Abstract: In one embodiment, apparatus is provided with a display panel, a wavelength converting material, and a light source. The display panel is provided with an interface to receive control signals defining one or more primary images that are projected from the display panel. The wavelength converting material absorbs light of a first wavelength and emits light of a second wavelength. The wavelength converting material defines a secondary image that is projected from the display panel when the wavelength converting material is illuminated by the light of the first wavelength. The light source causes the wavelength converting material to be illuminated by the light of the first wavelength.Type: GrantFiled: May 27, 2005Date of Patent: May 19, 2009Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Janet Bee Yin Chua, Yue Hoong Lau, Tah Wee Tee, Rene P. Helbing
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Publication number: 20090122232Abstract: A planar light source device configured to illuminate a transmissive liquid crystal device having a display region configured of pixels arrayed in a two-dimensional matrix from the rear side, includes: planar light source units corresponding to hypothetical display region units into which the liquid crystal display device is divided; a light source provided to each planar light source unit has jC×jR (jC?2, jR?2) light-emitting device units which are classified into first and second light-emitting device units; each light-emitting device unit being configured of i (i?1) red, 2i green, and i blue light-emitting devices. At each planar light source unit, the light-emitting devices of each color are classified into first and second luminance values. The classification categories differ between first and second light-emitting device units. The first light-emitting device unit and the second light-emitting device unit are placed in at least twofold rotational symmetry.Type: ApplicationFiled: October 6, 2008Publication date: May 14, 2009Applicant: Sony CorporationInventor: Atsushi SEKI
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Publication number: 20090122227Abstract: The present invention provides an integrated backlight illumination assembly for an LCD display comprising, a substrate for providing structural and functional support to the assembly, a bottom reflector provided on the substrate and a plurality of solid state light sources provided in an opening of the bottom reflector for providing a point light source. Further, the invention provides a plurality of light films with a thickness between 10 microns to 3mm and having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light source to a uniform plane of light and a top diffuser for diffusing the uniform plane of light, and wherein the plurality of light films has a thickness between 0.1 mm to 1.0 mm and a bending stiffness between 50 to 1200 millinewtons.Type: ApplicationFiled: November 8, 2007Publication date: May 14, 2009Applicant: Rohm and Haas Denmark Finance A/SInventors: Qi Hong, Peter T. Aylward, Robert P. Bourdelais
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Patent number: 7530722Abstract: An electro-optical device includes a display panel, and an illumination device having a plurality of light sources emitting light of red, green, blue, and white. The illumination device is configured to illuminate the display panel by transmitting the light emitted from the plurality of light sources through the display panel. The chromaticity of a display screen of the display panel is adjusted to a predetermined chromaticity by changing the time for which each of the plurality of light sources is turned on within a time period of one frame.Type: GrantFiled: September 18, 2006Date of Patent: May 12, 2009Assignee: Epson Imaging Devices CorporationInventor: Ichiro Murai
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Patent number: 7525611Abstract: A system and method of backlighting a display using LEDs is night vision viewing compatible and requires no filters. The backlight includes an array of LEDs and a controller configured to selectively illuminate the LEDs in the array. The array of LEDs includes orange LEDs that are illuminated during a night vision viewing mode and may include red LEDs that are illuminated in a non-night vision viewing mode.Type: GrantFiled: January 24, 2006Date of Patent: April 28, 2009Assignee: Astronautics Corporation of AmericaInventors: Peter A. Zagar, Thaddeus Raymond Ulijasz
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Patent number: 7505093Abstract: A liquid crystal display module includes a backlight assembly having a lamp, a lamp housing surrounding the lamp and having an open portion along a first side, a light guide plate disposed adjacent to the open portion of the lamp housing, and a plurality of optical sheets disposed on the light guide plate, edge portions of the plurality of optical sheets are disposed spaced apart from the light guide plate by interposing a top portion of the lamp housing between a periphery of the light guide plate and the edge portions of the plurality of optical sheet, a liquid crystal panel disposed over the plurality of optical sheets, a main support disposed over the lamp housing and accommodating the liquid crystal panel, a top case surrounding edge portions of the liquid crystal panel, and a bottom case supporting and accommodating the backlight assembly.Type: GrantFiled: October 6, 2004Date of Patent: March 17, 2009Assignee: LG Display Co., Ltd.Inventor: Moon-Soo Yeom
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Publication number: 20090066879Abstract: A light source portion having laser light sources emitting red light, green light, and blue light and conventionally disposed integrally with the liquid crystal display panel is spatially separated from the liquid crystal display panel. Accordingly, the power supply, the optical system, and the heat source are incorporated into the light source portion and are thereby completely separated from the liquid crystal display panel. A laser beam emitted from the light source portion is guided to the liquid crystal display panel via a fiber. In this manner, it is possible to achieve a liquid crystal display device capable of significantly reducing the liquid crystal display panel in thickness and weight.Type: ApplicationFiled: February 21, 2007Publication date: March 12, 2009Inventors: Kazuhisa Yamamoto, Tatsuo Itoh, Tetsuro Mizushima, Shinichi Kadowaki
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Publication number: 20090059130Abstract: A backlight device for a liquid crystal display includes a substrate, and a plurality of white, red, green, and blue light emitting diodes arranged on the substrate.Type: ApplicationFiled: October 21, 2008Publication date: March 5, 2009Inventors: Jae Bum KIM, Seung Hoon YANG
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Patent number: 7494234Abstract: A polarizer includes a first prism plate having a plurality of first micro-prisms; a polarizing film formed on surfaces of the first micro-prisms; and a second prism plate having a plurality of second micro-prisms, the micro-prisms of the first prism plate and the micro-prisms of the second prism plate meshed with each other and integrated the polarizing film therebetween, the polarizing film being in direct contact with the first prism plate and the second prism plate. Furthermore, a method for manufacturing the polarizer and a backlight module using the polarizer is also provided.Type: GrantFiled: May 24, 2006Date of Patent: February 24, 2009Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Jen-Tsorng Chang
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Publication number: 20090046218Abstract: An electronic device, such as personal computer, incorporating a liquid crystal panel which uses LEDs as an illuminating light source for a liquid crystal panel to reduce power consumption and size of the electronic device. When 3-color LED lamps 13R, 13G, 13B of the LED light source 12 are lit, red, green and blue rays emitted from respective LED lamps enter the scatterplate 11 where they are scattered and mixed to produce white light LW which goes out from the entire surface of the scatterplate 11 to illuminate the entire rear surface of the transmission type liquid crystal panel 10. The white light LW that has entered the liquid crystal panel 10 is modulated according to the alignment of the liquid crystal material and passes through the color filters of the counter substrate. The user can view the transmitted light LT from the liquid crystal panel 10 as a color image.Type: ApplicationFiled: October 10, 2008Publication date: February 19, 2009Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventor: Shunpei YAMAZAKI
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Publication number: 20090040432Abstract: A transflective display includes pixels each including a reflective (R) sub-pixel, a transmissive (T) sub-pixel, and electrodes having features to cause multiple domains to form in a liquid crystal layer of the R sub-pixel and the T sub-pixel. The electrodes in the R sub-pixels have features that are different from features of the electrodes in the T sub-pixel to cause the liquid crystal layer in the R sub-pixel to have an optical phase retardation that is between 20% to 80% of an optical phase retardation of the liquid crystal layer in the T sub-pixel. The R sub-pixel and the T sub-pixel have substantially the same cell gap and are driven by the same pixel voltage.Type: ApplicationFiled: August 6, 2007Publication date: February 12, 2009Inventors: Ruibo Lu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
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Patent number: 7489294Abstract: The image display device includes a liquid crystal display device having a liquid crystal panel and a backlight and a backlight controller for allowing the backlight of the liquid crystal display device to be bright when environment light is bright and allowing the backlight to be dark when the environment light is dark such that light leak (minimum luminance) which is defined by an extinction ratio of liquid crystal will not grow more than a specified degree. The image display device enables displayed images to be really discernible regardless of brightness of environment light (surrounding light).Type: GrantFiled: January 3, 2005Date of Patent: February 10, 2009Assignee: FUJIFILM CorporationInventor: Satoshi Arakawa
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Publication number: 20090033833Abstract: A polarizing plate comprising a protective film provided on the both sides of a polarizer, wherein the polarizing plate has an adhesive layer provided on at least one side thereof, which adhesive layer comprising a (meth)acrylic copolymer composition composed of (A) a specific (meth)acrylic copolymer reactive with the following polyfunctional compound (B) and (B) a polyfunctional compound and having a specific gel fraction.Type: ApplicationFiled: November 30, 2005Publication date: February 5, 2009Applicant: FUJIFILM CORPORATIONInventor: Eiichiro Aminaka
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Publication number: 20080297701Abstract: In a backlight assembly, a display apparatus and a method thereof, the backlight assembly includes a base substrate, a plurality of point light sources, a receiving container and a converter. The base substrate includes a first connector electrically connected to the base substrate at a lower surface of the base substrate. The receiving container includes a side wall and a bottom plate, and receives the base substrate. The bottom plate faces the lower surface of the base substrate and includes an opening into which the first connector is inserted. The converter is disposed on an opposite side of the bottom plate of the receiving container from the base substrate and includes a second connector electrically connected to the converter at an upper surface of the converter. The second connector is separably connected to the first connector.Type: ApplicationFiled: March 27, 2008Publication date: December 4, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kwang-Hee Lee, Seong-Sik Choi, Han-Jin Ryu
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Publication number: 20080297700Abstract: A light-emitting module includes a plurality of lamp units and a plurality of LED units. The lamp unit generates first non-white colored light. The LED unit generates second colored light. Each LED unit is disposed between the lamp units. The first non-white colored light and the second colored light are mixed to generate third colored light. A backlight module and a liquid crystal display (LCD) are also disclosed.Type: ApplicationFiled: August 9, 2007Publication date: December 4, 2008Inventors: Chih-Hao Yu, Nai-Yueh Liang
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Publication number: 20080297702Abstract: A light emitting diode package according to an embodiment of the present invention includes a plurality of red LEDs, green LEDs and blue LEDs arranged for emitting a white light using a color mixing, at least one white LED emitting the white light and a printed circuit board having a circuit pattern for driving the plurality of red LEDs, green LEDs, blue LEDs, and white LEDs.Type: ApplicationFiled: November 22, 2006Publication date: December 4, 2008Inventors: Yong Gu Cho, Hyun Ha Hwang
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Publication number: 20080291152Abstract: A liquid crystal display apparatus includes a display panel in which liquid crystal pixels, which are composed with use of an OCB mode liquid crystal, are arranged in a matrix, first and second backlights which illuminate the display panel, and driving control means for controlling the display panel, wherein light from the first backlight is emitted with an inclination of a predetermined angle in a first direction to a plane which is perpendicular to a display surface of the display panel and extends along an alignment direction of liquid crystal molecules, and light from the second backlight is emitted with an inclination of the predetermined angle to the plane, the first direction and the second direction being symmetric to each other with regard to the plane.Type: ApplicationFiled: May 19, 2008Publication date: November 27, 2008Inventors: Kenji NAKAO, Yukio Tanaka, Shigesumi Araki, Kazuhiro Nishiyama
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Publication number: 20080284946Abstract: A lighting system has light-emitting diodes as light sources mounted on a circuit board, in which the light-emitting diodes include a red light-emitting diode, blue light-emitting diode and a green light-emitting diode, the light-emitting diodes are constituted of one single unit including one for each of the red, blue and green light-emitting diodes, and the one single unit is repeatedly arranged as plural pieces on the same circuit board, and each of the red, blue and green light-emitting diodes is individually connected electrically to emit a light.Type: ApplicationFiled: May 14, 2008Publication date: November 20, 2008Inventors: Makoto ABE, Akitoyo Konno, Kaoru Katayama, Takeshi Miitsu
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Publication number: 20080259250Abstract: 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: ApplicationFiled: April 23, 2007Publication date: October 23, 2008Applicant: SONY ERICSSON MOBILE COMMUNICATIONS ABInventors: Mats Kleverman, Gunnar Klinghult, Mats Wernersson
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Patent number: 7439984Abstract: An image signal processing method for performing nonlinear compensation on an image signal to be fed into a display device (103). The characteristics of nonlinear compensation are changed according to the brightness of a place in which the display device (103) is installed. This method can make the characteristics of brightness of human beings feel linear with respect to an image signal, even when the display luminance of the display device (103) is uniformly increased by the influence of ambient light.Type: GrantFiled: March 2, 2005Date of Patent: October 21, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Kazuhiro Yamada
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Publication number: 20080239205Abstract: A backlight module is provided. The backlight module includes a frame, a plurality of light emitting elements, at least one photo sensor device and a diffusing plate. The frame has a bottom plate on which the plurality of light emitting elements are disposed. The photo sensor device is distributed on the bottom plate and among the plurality of light emitting elements. It is to be noted that the photo sensor device includes a light mixing component having a receiving space configured at a bottom thereof, and a photo sensor chip received in the receiving space. The diffusing plate is disposed in the frame and above the light emitting elements and the photo sensor device. The backlight module has an excellent light outputting performance and an LCD using the same has better displaying performance.Type: ApplicationFiled: June 26, 2007Publication date: October 2, 2008Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Chung-Hsing Ho
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Patent number: 7430028Abstract: A viewing-angle adjustable liquid crystal display includes a display panel, a backlight unit, and a sidelight unit. The backlight unit is located under the sidelight unit, and the sidelight unit is disposed under the display panel. The sidelight unit includes a first sidelight source and a light-guide plate. The first sidelight source is disposed at one end of the light-guide plate. The displaying method includes providing direct light to the display panel in response to the narrow-viewing-angle-mode signal; and providing scattering light to the display panel in response to the wide-viewing-angel-mode signal.Type: GrantFiled: March 22, 2005Date of Patent: September 30, 2008Assignee: AU Optronics Corp.Inventors: Meng-Chang Tsai, Yung-Lun Lin, Chih-Ming Chang
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Publication number: 20080231775Abstract: A liquid crystal display device capable of reducing a time delay in lighting of the liquid crystal display device includes a liquid crystal panel, at least one fluorescent lamps disposed below the liquid crystal panel, formed as a cylindrical shape having a central axis and supplying light to the liquid crystal panel, and at least one auxiliary optical source disposed to face the liquid crystal panel while having the central axis therebetween and supplying light to the fluorescent lamps.Type: ApplicationFiled: December 28, 2007Publication date: September 25, 2008Applicant: LG.PHILIPS LCD CO., LTD.Inventor: Young-Eun Lee
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Publication number: 20080231589Abstract: A liquid crystal display (LCD) device is provided. The LCD device includes a liquid crystal panel, a backlight unit, first, second and third light emitting diode drivers, a light-intensity detector, and an adaptive light-intensity compensator. The backlight unit includes first, second and third light emitting diode arrays respectively generating red light, green light and blue light to provide white light to the liquid crystal panel. The first, second and third light emitting diode drivers generate operating voltages driving the first, second and third light emitting diode arrays, respectively. The light-intensity detector detects an intensity of white light provided to the liquid crystal panel. The adaptive light-intensity compensator controls the first, second and third light emitting diode drivers to compensate the intensities of the red light, the green light and the blue light, respectively.Type: ApplicationFiled: December 11, 2007Publication date: September 25, 2008Applicant: LG. PHILIPS LCD CO.,LTDInventors: Hyun Jin So, Sang Yoon Park