With Different Liquid Crystal Thickness For Each Color Of Filter Patents (Class 349/107)
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Patent number: 7916244Abstract: A liquid crystal display (LCD) having high luminance and color renditions is provided. The liquid crystal display includes a first insulating substrate, a gate line and a data line crossing each other on the first insulating substrate to define a pixel. First and second sub-pixel electrodes divide the pixel into two parts. A first switching element drives the first sub-pixel electrode and a second switching element drives the second sub-pixel electrode. A second insulating substrate faces the first insulating substrate. A color pattern is arranged on the second insulating substrate and overlaps the first sub-pixel electrode. A contrast pattern overlaps the second sub-pixel electrode.Type: GrantFiled: February 19, 2009Date of Patent: March 29, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-Hyun Hur, Kweon-Sam Hong, Woo-Sung Sohn, Bae-Heuk Yim, Hyun-Ho Kang, Jae-Yong Shin
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Patent number: 7911567Abstract: A reflective liquid crystal display (LCD) is provided for efficiently preventing white coordinates from being yellowish. The LCD includes a substrate having red color filters, green color filters, and blue color filters. The blue color filters have an overall area smaller than that of the red color filters and the green color filters while blocking green light better than the red color filters and blocking red light better than the green color filters.Type: GrantFiled: December 16, 2008Date of Patent: March 22, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Nam-seok Roh, Soo-guy Rho
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Patent number: 7880834Abstract: Realizes a structure for a transreflective liquid crystal display device in which one pixel is defined by four or more picture elements, the structure providing a high aperture ratio and being suitable for display for which the transmission mode is prioritized. A liquid crystal display device according to the present invention is a transreflective liquid crystal display device, comprising a plurality of picture elements including a first picture element, a second picture element, a third picture element and a fourth picture element for displaying different colors from one another; in which each of the plurality of picture elements includes a transmission area for providing display in a transmission mode and a reflection area for providing display in a reflection mode. Each picture element includes a mesh portion shaped to be meshable with an adjacent picture element; and the reflection area of each picture element is located in the mesh portion.Type: GrantFiled: February 19, 2007Date of Patent: February 1, 2011Assignee: Sharp Kabushiki KaishaInventors: Tokio Taguchi, Kazuhiko Tsuda, Mutsumi Nakajima, Keisuke Yoshida, Junichi Yamada
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Patent number: 7859736Abstract: A method for manufacturing an electro-optic device including: a display surface; a plurality of pixels including at least a first pixel for forming a first image and a second pixel for forming a second image and emitting light toward the display surface; a filter that allows, of the light, light emitted from the first pixel to a first range through the display surface to pass through, and light emitted from the second pixel to a second range through the display surface to pass through; and a substrate between the plurality of pixels and the filter. The method includes: providing the filter on the substrate, with the distance between the substrate and the filter kept at a distance set according to the thickness of the substrate.Type: GrantFiled: October 23, 2008Date of Patent: December 28, 2010Assignee: Sony CorporationInventor: Takashi Shinohara
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Patent number: 7847868Abstract: An apparatus, system, and method for subpixels of a light valve pixel having characteristics adapted to complement light within certain wavelength ranges are disclosed herein.Type: GrantFiled: June 3, 2005Date of Patent: December 7, 2010Assignee: Seiko Epson CorporationInventor: David Elliot Slobodin
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Patent number: 7847889Abstract: Panels for a display device, a liquid crystal display, and methods to manufacture the same are disclosed. A light blocking member on a first panel advantageously overlaps a transistor and an opaque element on a second panel for advantageously reducing or eliminating light leakage, thereby allowing for sharp viewing contrast.Type: GrantFiled: June 9, 2004Date of Patent: December 7, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Dong-Gyu Kim
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Patent number: 7843532Abstract: The present invention relates to a liquid crystal display panel that is adaptive for preventing rubbing defects and the fabricating method thereof. A liquid crystal display panel according to an embodiment of the present invention includes a black matrix on a substrate; and color filters formed at pixel areas which are defined by the black matrix, wherein a distance between the adjacent color filters is between about 0.1 ?m and about 5 ?m.Type: GrantFiled: December 15, 2004Date of Patent: November 30, 2010Assignee: LG Display Co., Ltd.Inventor: Woo Jin Kim
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Patent number: 7834961Abstract: A color filter substrate is provided, including a substrate, a color filter layer formed on the substrate and including color filters where at least one of the color filters has an opening that partially exposes a portion of the substrate, a planarization layer reducing a step difference between the color filter layer and the portion of the substrate exposed by the opening, and a transparent electrode formed on the planarization layer.Type: GrantFiled: December 27, 2006Date of Patent: November 16, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Ho Yang, Dong-Ho Lee
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Patent number: 7830477Abstract: A liquid crystal display device includes; a first substrate, a second substrate facing the first substrate and having a common electrode, and a liquid crystal layer, the first substrate including; a plurality of pixels, a thin film transistor, a pixel electrode, a color filter including a first sub color filter, a second sub color filter and a third sub color filter, each sub color filter including a different color, and a shield electrode receiving a common voltage and disposed substantially parallel to the data line along a boundary between adjacent pixels on the color filter, wherein the color filter disposed below the shield electrode comprises a convex region which protrudes toward the second substrate, the plurality of pixels comprise a first pixel having the first sub color filter, a second pixel having the second sub color filter and a third pixel having the third sub color filter, and the third sub color filter forms the convex region.Type: GrantFiled: October 31, 2007Date of Patent: November 9, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Dong-gyu Kim
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Patent number: 7808595Abstract: According to an embodiment, an array substrate for an LCD device includes a substrate, gate lines on the substrate along a first direction, data lines formed along a second direction and crossing the gate lines to define first, second and third pixel regions, thin film transistors at crossing points of the gate lines and the data lines, red, green and blue color filter patterns sequentially disposed in the first, second and third pixel regions, respectively, first, second and third common lines corresponding to the first, second and third pixel regions and receiving first, second and third common voltages, respectively, a pixel electrode over each of the red, green and blue color filter patterns and connected to one of the thin film transistors, and a common electrode over each of the red, green and blue color filter patterns and connected to one of the first, second and third common lines.Type: GrantFiled: December 28, 2007Date of Patent: October 5, 2010Assignee: LG Display Co., Ltd.Inventor: Gee-Sung Chae
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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: 20100238389Abstract: A display panel including a pair of substrates, a color filter layer, and a display medium is provided. The substrates including a plurality of pixels, wherein each pixel at least having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The color filter layer is disposed on one of the substrates and at least has a first color filtering pattern disposed in the first sub-pixel, a second color filtering pattern disposed in the second sub-pixel, a third color filtering pattern disposed in the third sub-pixel, and a fourth color filtering pattern disposed in the fourth sub-pixel. The display medium is disposed between the pair of substrates, wherein the display medium correspondingly disposed in the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel has thicknesses of T1, T2, T3 and T4, respectively, and T1>T2>T3 and T1>T4>T3.Type: ApplicationFiled: May 20, 2009Publication date: September 23, 2010Applicant: AU OPTRONICS CORPORATIONInventors: Chih-Cheng Chan, Sheng-Wen Cheng
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Publication number: 20100231832Abstract: The present invention provides a color liquid crystal panel in an e-mode of an IPS mode, which has a multi-gap structure, and in which a contrast in an oblique direction is enhanced. A first polarizer 1 is provided on a color filter 6 side of a liquid crystal cell 10 and a second polarizer 8 is provided on a liquid crystal layer 5 side of the liquid crystal cell 10. Further, a retardation film 2 is provided between the first polarizer 1 and the liquid crystal cell 10. The liquid crystal cell 10 has a configuration in which the color filter 6 is laminated on a glass substrate 3, and a liquid crystal layer 5 is interposed between the color filter 6 and a glass substrate 7. Regarding the thickness of the liquid crystal layer 5, a thickness dB of a region in contact with the blue color filter 6B is smallest, and a thickness dG of a region in contact with the green color filter 6G and a thickness dR of a region in contact with the red color filter 6R increase in this order.Type: ApplicationFiled: May 19, 2008Publication date: September 16, 2010Applicant: NITTO DENKO CORPORATIONInventors: Shouhei Maezawa, Masatoshi Tomonaga, Hiroyuki Takemoto
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Patent number: 7791574Abstract: There is provided an electro-optical device including pixels arranged in a matrix, each pixel having a plurality of color-display sub-pixels corresponding to a plurality of colors and a monochrome-display sub-pixel. The color-display sub-pixel and the monochrome-display sub-pixel can perform gray-scale display independently. One of the color-display sub-pixel and the monochrome-display sub-pixel displays images in a transmissive mode in which light emitted from a light source is modulated, while the other sub-pixel displays images in a reflective mode in which light incident from outside is modulated.Type: GrantFiled: August 22, 2005Date of Patent: September 7, 2010Assignee: Seiko Epson CorporationInventors: Kimitaka Kamijo, Keiji Takizawa
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Patent number: 7782425Abstract: A liquid crystal display includes a TFT array panel, a color filter panel, a liquid crystal layer in an OCB mode, a pair of compensation films provided on outer surfaces of the TFT array panel and the color filter panel, a pair of polarization films provided on outer surfaces of the compensation films, and so on. When the wavelength dispersion of the liquid crystal layer is larger than the wavelength dispersion of the first and the second compensation films, the cell gap on the red pixel area>the cell gap on the green pixel area>the cell gap on the blue pixel area. On the contrary, when the wavelength dispersion of the liquid crystal layer is smaller than the wavelength dispersion of the first and the second compensation films, the cell gap on the red pixel area<the cell gap on the green pixel area<the cell gap on the blue pixel area.Type: GrantFiled: September 18, 2002Date of Patent: August 24, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jang-Kun Song, Chang-Hun Lee
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Patent number: 7768600Abstract: Provided is an optical filter having a light-transmitting region of transmitting light having a predetermined wavelength and a light-blocking region disposed adjacent to the light-transmitting region to block out the light, wherein the light-blocking region has an optical density gradation relative to light in the normal direction, from the contact point to the light-transmitting region along an in-plane direction, and the optical density is the smallest at the contact point to the light-transmitting region.Type: GrantFiled: March 6, 2008Date of Patent: August 3, 2010Assignee: Fujifilm CorporationInventors: Hiroyuki Kaihoko, Ryuji Saneto, Yukito Saitoh
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Publication number: 20100188621Abstract: A liquid crystal display device of the present invention is arranged such that a retardation of a liquid crystal layer which obtained while no voltage is applied falls within ± (a value which is one-tenth of a main wavelength) of a value obtained by adding natural number times the main wavelength to a total retardation of at least one optical compensation film. This allows suppression of a transmittance during no voltage application.Type: ApplicationFiled: May 23, 2008Publication date: July 29, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Yohei Nakanishi
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Publication number: 20100182550Abstract: The present invention provides a color liquid crystal panel in an o-mode of an IPS mode, which has a multi-gap structure, and in which a contrast in an oblique direction is enhanced. A first polarizer 1 is provided on a color filter 6 side of a liquid crystal cell 10 and a second polarizer 8 is provided on a liquid crystal layer 5 side of the liquid crystal cell 10. Further, a retardation film 2 is provided between the second polarizer 8 and the liquid crystal cell 10. The liquid crystal cell 10 has a configuration in which the color filter 6 is laminated on a glass substrate 3, and a liquid crystal layer 5 is interposed between the color filter 6 and a glass substrate 7. Regarding the thickness of the liquid crystal layer 5, a thickness dB of a region in contact with the blue color filter 6B is smallest, and a thickness dG of a region in contact with the green color filter 6G and a thickness dR of a region in contact with the red color filter 6R increase in this order.Type: ApplicationFiled: May 19, 2008Publication date: July 22, 2010Applicant: NITTO DENKO CORPORATIONInventors: Shouhei Maezawa, Masatoshi Tomonaga, Hiroyuki Takemoto
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Publication number: 20100157212Abstract: Provided is a method of producing a liquid crystal cell substrate comprising forming an image having at least two different hues and having different thickness for the respective hue domains, and forming at least one monoaxial or biaxial optically anisotropic layer having different film thicknesses on the respective hue domains on the image.Type: ApplicationFiled: January 18, 2007Publication date: June 24, 2010Applicant: FujiFilm CorporationInventors: Morimasa Sato, Ichiro Amimori
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Patent number: 7733445Abstract: Chromaticity difference is decreased, which is caused by the difference of transmissivity when a light passes through a transparent conductive film to constitute pixels. Optical film thickness of each of transparent conductive films PXR, PXG, and PXB to constitute pixels (a product “nd” of refractive index “n” and film thickness “d”) is varied for each of color filters RF, GF, and BF for each pixel. The transparent conductive film is prepared by coating an ink (produced by dispersing fine particles of a transparent conductive film material such as ITO in a binder) via nozzle of an ink jet device, and then, by baking. Film thickness is controlled by the coating amount of the ink, and refractive index is controlled by volume ratio of the fine particles of conductive material to the binder contained in the transparent conductive film in consideration of those refractive indices.Type: GrantFiled: November 30, 2006Date of Patent: June 8, 2010Assignee: Future Vision Inc.Inventors: Makoto Abe, Tsutomu Tanaka
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Patent number: 7724419Abstract: A display includes a first substrate, a first electrode, a second substrate, a second electrode and a display material layer. The first electrode is disposed on the first substrate and the second electrode is disposed on the second substrate. The display material layer is disposed between the first electrode and the second electrode. The display material layer of the invented display includes a solution and a plurality of first micro beads, wherein each of the first micro beads further has a plurality of different axis lengths in different axis directions, and the axis length in at least an axis direction is different from the axis lengths in the rest axis directions so that the first micro beads present different arrangement densities in different driving frequencies under the influence of polarized self-arrangement effect.Type: GrantFiled: April 7, 2009Date of Patent: May 25, 2010Assignees: Chungwa Picture Tubes, Ltd., National Chiao Tung UniversityInventors: Shih-Kang Fan, Cheng-Pu Chiu, Ching-Hsiang Hsu, Chi-Neng Mo, Mei-Tsao Chiang
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Patent number: 7705936Abstract: A color filtering member for improving the brightness of a display device is presented. The color filtering member includes colored regions (e.g., regions with RBG color filters) and black-and-white regions for transmitting white light. The black-and-white regions may be colorless gaps between adjacent colored regions. Multiple planarizing layers may be deposited on the colored regions and the black-and-white regions to form a surface that is sufficiently even. The color filtering member may include an intercepting region that extends between neighboring colored regions. The position of the intercepting region is not centered between the two colored regions that it separates. Rather, the intercepting region is shifted in the direction of rubbing (in the direction of liquid crystal alignment) to more effectively cover the regions where light leakage occurs. This color filtering member may be combined with an array member and a liquid crystal layer to form a display device.Type: GrantFiled: December 23, 2003Date of Patent: April 27, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Ho Lee, Yong-Ho Yang
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Patent number: 7688409Abstract: A novel transflective liquid crystal display (LCD) is provided with a multilayer dielectric film transflector. The dielectric transflector is composed of alternating high and low refractive index dielectric material layers deposited directly on the inner side of the LCD substrate to avoid parallax. The transmittance of the dielectric transflector can vary from approximately 5% to approximately 95% by simply adjusting the individual dielectric layer thickness and the arrangement of layers. The thickness of the 10-layer film is approximately 700 nm, which does not affect the voltage drop on the LC. Two structures of the dielectric film using different positions of the materials of construction are provided and demonstrated. Such a transflective LCD exhibits outstanding features, such as, robust dielectric film, single cell gap, no parallax, and a simple fabrication process.Type: GrantFiled: December 7, 2006Date of Patent: March 30, 2010Assignee: University of Central Florida Research Foundation, Inc.Inventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas X. Wu, Xinyu Zhu, Zhibing Ge
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Patent number: 7671828Abstract: A color filter substrate includes a substrate and color layers of different colors which are disposed on the substrate. The color layers are provided in unit pixels. The unit pixels each include subpixels. The subpixels each include a reflection region where light entering the pixels is reflected and a transmission region where light entering the pixels is transmitted. The reflection and transmission regions include a different combination of two color layers selected from the color layers for each of the subpixels. The two color layers are adjacent to each other in a plane in the reflection region and are stacked on top of each other in the transmission region. The transmission region of at least one of the subpixels has an unstacked area where one of the two color layers is formed.Type: GrantFiled: March 2, 2006Date of Patent: March 2, 2010Assignee: Epson Imaging Devices CorporationInventors: Tomoyuki Nakano, Keiji Takizawa, Hideki Kaneko
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Patent number: 7663716Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, the liquid crystal display device having a dot region as an image display unit, the dot region including a transmissive display region and a reflective display region, wherein a thickness adjustment layer for adjusting the thickness of the liquid crystal layer is disposed between the liquid crystal layer and at least one of the first substrate and the second substrate, the thickness adjustment layer decreasing the thickness of the liquid crystal layer in the reflective display region compared with the thickness of the liquid crystal layer in the transmissive display region, and a metal line is placed on the second substrate so as to overlap, in plan view, an inclined region of the thickness adjustment layer disposed between the transmissive display region and the reflective display region.Type: GrantFiled: August 23, 2005Date of Patent: February 16, 2010Assignee: Seiko Epson CorporationInventor: Hitoshi Tsuchiya
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Patent number: 7646456Abstract: Disclosed is a liquid crystal display device having an improved display quality. The device includes a substrate; black matrix formed in a matrix pattern on one side of the substrate, wherein the black matrix divides the substrate into a plurality of cell areas; a color filter layer having a red color filter of a first thickness formed in one of the plurality of cell areas, a green color filter of a second thickness which is higher than the first thickness, and a blue color filter of a third thickness which is higher than the second thickness; and a first compensation layer formed by coating the color filter layer and the black matrix with a polymerizable liquid crystal, wherein the first compensation layer is hardened, thereby leveling the substrate, and includes a positive C-plate; and a second compensation layer on another side of the substrate, wherein the second compensation layer is made of one of an A-plate and a biaxial film.Type: GrantFiled: May 17, 2007Date of Patent: January 12, 2010Assignee: LG Display Co., Ltd.Inventor: Su Dong Roh
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Patent number: 7646454Abstract: A transflective Liquid Crystal Display device has a liquid crystalline (LC) cell with reflective portions (101 R) and transmissive portions (101 T). The LCD device has a dual cell-gap design, the cell gap (dT) for the transmissive portions differs from the cell gap (dR) for the reflective portions. According to the invention, this cell gap difference is effected by means of an optical retarder (120) inside the LC cell. A thickness of said optical retarder (120) is such as to compensate the difference in cell gaps. Preferably, the optical retarder is a patterned retarder extending essentially only over the reflective portions (101 R) of the cell, and having quarter wave retardance.Type: GrantFiled: June 2, 2004Date of Patent: January 12, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Jacob Bruinink, Sander Jurgen Roosendaal
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Patent number: 7639323Abstract: 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 maximum brightness peaks of a normalized emission spectrum of the backlight module at a wavelength between 500 nm to 520 nm and between 445 nm to 465 nm, in which 0.91?BL1/BL2?0.99. The liquid crystal display panel is disposed above the backlight module, and has a plurality of substrates and one liquid crystal layer located between them. One of substrates has a red filter layer, a green filter layer, and a blue filter layer, and the coordinate values of the red filter layer, the green filter layer, and the blue filter layer in CIE 1931 chromaticity diagram satisfy predetermined relation expressions.Type: GrantFiled: March 3, 2008Date of Patent: December 29, 2009Assignee: Au Optronics CorporationInventors: Chun-Chieh Wang, Yu-Hui Chou, Ya-Ling Hsu, Chun-Liang Lin, Chen-Hsien Liao
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Patent number: 7636140Abstract: The present invention relates to transflective color liquid crystal displays that provide for improved balancing and optimization of color and white points in transmissive and reflective mode. The invention is base on the deliberate increase of light absorbance at sub-pixels of selected colors. The light absorbance can be increased by the inclusion of light absorbing portions (803) on the transflector (800) at sub-pixel level, which then reduces the total reflectivity and/or transmittivity of that sub-pixel. Selecting the light absorbance in accordance with the present invention may be combined with the use of color filters having differentiated thickness and/or pinhole color filters.Type: GrantFiled: February 23, 2005Date of Patent: December 22, 2009Assignee: Tpo Hong Kong Holding LimitedInventor: Rudolf Jozef Marie Beeren
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Publication number: 20090310069Abstract: A liquid crystal display includes a lower panel, an upper panel facing the lower panel and including a plurality of red color filters, green color filters, and blue color filters, and a liquid crystal layer interposed between the lower and upper panels. The liquid crystal layer has first, second and third cell-gap portions corresponding to the red, green and blue filters, respectively, and the first second and third cell-gap portions have cell gaps Dr, Dg and Db, respectively. A first compensation film is disposed on an outer surface of one of the lower panel or the upper panel. A lower polarizer is on the outer surface of the lower panel and an upper polarizer is on the outer surface of the upper panel. The cell gaps Dr, Dg and Db may satisfy the equation 0 ?m?Dg?Db and Dr?Dg?0.5 ?m.Type: ApplicationFiled: February 9, 2009Publication date: December 17, 2009Inventors: Hee-Wook Do, Ki-Chul Shin, Sung-Min Kang
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Publication number: 20090290106Abstract: A thin film transistor array substrate is provided with a gate line assembly, a data line assembly, and thin film transistors. The data line assembly crosses over the gate line assembly while defining pixel regions. A pixel electrode is formed at each pixel region. A color filter substrate is provided with a black matrix, and color filters of red, green and blue are formed at the black matrix at the pixel regions. An overcoat layer covers the color filters, and a common electrode is formed on the overcoat layer with an opening pattern. The thin film transistor array substrate, and the color filter substrates face each other, and a liquid crystal material is injected between the thin film transistor array substrate, and the color filter substrate. The blue color filter has a thickness smaller than the red color filter or the green color filter such that the liquid crystal cell gap at the blue color filter is larger than the liquid crystal cell gap at the red or green color filter.Type: ApplicationFiled: July 31, 2009Publication date: November 26, 2009Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
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Patent number: 7623202Abstract: It is possible to eliminate the blue tone in the black color display in the OCB liquid crystal display device. A liquid crystal display cell (110) includes an opposing substrate (130) having an opposing electrode (Ecom), an array substrate (120) having pixel electrodes of the respective colors (dpixR, dpixG, dpixB), a liquid crystal layer (140) arranged in a bend-arrangement and sandwiched between the opposing substrate (130) and the array substrate (120), and red, green, and blue filter layers (CF(R), CF(G), CF(B)) arranged on one of the substrates. The maximum voltage is applied when performing black color display on the display screen. At least the maximum voltage of the pixel electrode for blue color dpixB applied to the opposing electrode (Ecom) is made different from the maximum voltage of the pixel electrodes of the other colors applied to the opposing electrode (Ecom).Type: GrantFiled: December 8, 2004Date of Patent: November 24, 2009Assignee: Toshiba Matsushita Display Technology Co., LtdInventors: Shigesumi Araki, Kazuhiro Nishiyama, Mitsutaka Okita, Daiichi Suzuki
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Publication number: 20090273747Abstract: A liquid crystal display and a manufacturing method thereof, including: a first substrate; a thin film transistor formed on the first substrate; a pixel electrode connected to the thin film transistor; a second substrate facing the first substrate; a first spacer formed on the second substrate and overlapping the thin film transistor; a second spacer formed on the second substrate and overlapping the pixel electrode; a common electrode formed on the second substrate, the first spacer, and the second spacer; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the pixel electrode and the common electrode disposed on the second spacer form a storage capacitor.Type: ApplicationFiled: April 16, 2009Publication date: November 5, 2009Inventors: KYOUNG-JU SHIN, Cheol-Woo Park, Chang-Hoon Kim, Chang-Soon Jang
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Publication number: 20090268133Abstract: The liquid crystal panel of the invention can restrain coloration following a change in the viewing angle when black is displayed, and can be produced into a relatively thin form. This panel has a liquid crystal cell 20 having a color filter having individual blue, green and red regions, a first polarizer 10 formed on one side of the cell 20, a second polarizer 40 formed on the other side of the cell 20, and a compensation layer 30 arranged between the first and second polarizers 10 and 40. The compensation layer 30 has an optical characteristic that the layer gives a larger retardation for a longer wavelength, and the cell 20 has a liquid crystal layer in a vertical alignment mode, and the thickness direction retardation values Rth(B), Rth(G) and Rth(R) of the liquid crystal cell to light transmitted through the individual color regions in the liquid crystal cell 20 satisfy: |Rth(B)|<|Rth(G)|<|Rth(R)|.Type: ApplicationFiled: April 19, 2007Publication date: October 29, 2009Applicant: NITTO DENKO CORPORATIONInventors: Hiroyuki Yoshimi, Kentarou Takeda
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Patent number: 7605886Abstract: A thin film transistor array substrate is provided with a gate line assembly, a data line assembly, and thin film transistors. The data line assembly crosses over the gate line assembly while defining pixel regions. A pixel electrode is formed at each pixel region. A color filter substrate is provided with a black matrix, and color filters of red, green and blue are formed at the black matrix at the pixel regions. An overcoat layer covers the color filters, and a common electrode is formed on the overcoat layer with an opening pattern. The thin film transistor array substrate, and the color filter substrates face each other, and a liquid crystal material is injected between the thin film transistor array substrate, and the color filter substrate. The blue color filter has a thickness smaller than the red color filter or the green color filter such that the liquid crystal cell gap at the blue color filter is larger than the liquid crystal cell gap at the red or green color filter.Type: GrantFiled: May 31, 2006Date of Patent: October 20, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
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Patent number: 7605892Abstract: A liquid crystal display (LCD) device for switching a display mode between wide and narrow viewing angle, and a method for fabricating the same, is presented. The LCD device has an LCD panel and a viewing angle control cell. The LCD panel has array and color filter substrates and a liquid crystal layer formed between the substrates. The viewing angle control cell contains a lower substrate that contacts the LCD panel and has a first electrode, an upper substrate having a second electrode, and a ferroelectric liquid crystal layer between the upper and lower substrates. The viewing angle control cell switches the LCD device between wide and narrow viewing angle modes when driven.Type: GrantFiled: December 29, 2005Date of Patent: October 20, 2009Assignee: LG. Display Co., Ltd.Inventors: Hyung-Seok Jang, Hyun-Suk Jin
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Patent number: 7599024Abstract: An embodiment of the present invention will be disclosed below. A substrate provided with a bank, comprising: a transparent substrate, and a bank including an ink-repellent agent on the transparent substrate. A contact angle of an upper apex portion of said bank with respect to a colored ink with a surface tension of 50 mN/m or less is 30°-60°. Pixels comprising a colored pattern are provided by ejecting colored inks by an ink-jet method into openings in the bank. ?Eab within the pixels is less than 1.Type: GrantFiled: August 24, 2007Date of Patent: October 6, 2009Assignee: Toppan Printing Co., Ltd.Inventors: Masaaki Umehara, Teruhiko Kai
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Patent number: 7580094Abstract: A transreflective LCD panel and an electronic device using the same are provided. The LCD panel includes a first substrate and a second substrate. The second substrate is parallel to the first substrate. A liquid crystal layer is sealed between the two substrates. The first substrate includes several reflective portions. The second substrate includes a color filter structure. The color filter structure includes several color filter layers in at least four colors. Each of the color filter layers has an opening corresponding to one reflective portion. An optical filter is disposed in the opening for enhancing the coloration of the LCD panel.Type: GrantFiled: September 20, 2007Date of Patent: August 25, 2009Assignee: Wintek CorporationInventors: Wen-Chun Wang, Chin-Chang Liu, Kuo-Chang Su
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Publication number: 20090207349Abstract: A liquid crystal panel of the present invention comprises a liquid crystal cell, a first polarizing plate arranged on one of both sides of the liquid crystal cell, and a second polarizing plate arranged on the other side of the liquid crystal cell, wherein the liquid crystal cell comprises red, green and blue color filters, and a liquid crystal layer. The liquid crystal layer has a multigap structure satisfying the following relationship: dR?dG>dB. The first polarizing plate comprises a first polarizer and a first protective layer arranged on the liquid crystal cell side of the first polarizer, and in the first protective layer, the index ellipsoid thereof satisfies the following relationship: nx>ny?nz. In a liquid crystal display having the liquid crystal panel, the color shift thereof can be made smaller in oblique directions and display characteristics can be excellent.Type: ApplicationFiled: October 16, 2007Publication date: August 20, 2009Applicant: NITTO DENKO CORPORATIONInventors: Hiroyuki Yoshimi, Tadayuki Kameyama, Masatoshi Tomonaga, Masaki Hayashi
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Patent number: 7573553Abstract: In a transflective type IPS type liquid crystal display device in which a phase difference layer has been built in a reflection display portion, a retardation value of the phase difference layer corresponding to a short wavelength color filter is different from a retardation value of the phase difference layer corresponding to a long wavelength color filter; while a blue display pixel is set to the short wavelength color filter and both red and green pixels are set to the long wavelength filter, the retardation value of the phase difference layer corresponding to the former-mentioned short wavelength color filter is made smaller than the retardation value of the phase difference layer corresponding to the latter-mentioned long wavelength color filter.Type: GrantFiled: November 6, 2007Date of Patent: August 11, 2009Assignee: Hitachi Displays, Ltd.Inventors: Osamu Itou, Shoichi Hirota, Masaya Adachi, Shinichiro Oka
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Patent number: 7573539Abstract: A liquid crystal display (LCD) apparatus having a delta-type pixel structure, comprises a thin-film transistor (TFT) substrate, a color filter substrate and a liquid crystal layer. Electrodes on the TFT substrate are configured to block light leakage at boundaries between color filters. Light leakage at the color filter boundaries is blocked without having a black matrix on the color filter substrate.Type: GrantFiled: August 22, 2007Date of Patent: August 11, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Koo Her, Min-Kyung Jung
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Patent number: 7570324Abstract: A liquid crystal display device has been disclosed. The liquid crystal display device provides a display with a high reflectance (high transmittance) and a high color purity while maintaining white balance and adjusts the white balance by changing the occupied area instead of the transmission characteristics of a CF in order to prevent yellowing of the display due to a low-temperature light source.Type: GrantFiled: April 5, 2007Date of Patent: August 4, 2009Assignee: Sharp Kabushiki KaishaInventor: Katsufumi Ohmuro
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Publication number: 20090185116Abstract: The present invention relates to a liquid crystal display and a fabricating method thereof. The cell gaps for the red, green and blue pixel areas are formed in a separate manner for correcting the color shift to enhance image quality. Openings for controlling the cell gaps are provided in the protective layer and the gate insulating layer and have a zigzag-shaped boundary. In this way, the light leakage near the boundary of the openings can be prevented.Type: ApplicationFiled: December 5, 2008Publication date: July 23, 2009Inventors: JANG-KUN SONG, Sang-Gab Kim, Seung-Hee Lee
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Patent number: 7545467Abstract: A transflective liquid crystal display. A first substrate comprises a plurality of pixels, each pixel comprises a plurality of sub-pixels and each sub-pixel comprises at least one transmissive and at least one reflective regions. A second substrate is opposite to the first substrate, divided into a plurality of regions corresponding to the sub-pixels, and at least three of the regions are color regions and at least one of the regions is a fourth region. A first covering layer covers the first substrate, wherein the first covering layer in the transmissive region corresponding to the fourth region is substantially thicker than that corresponding to the three color regions, and the first covering layer in the reflective region corresponding to the fourth region has a thickness substantially equal to that corresponding to the three color regions. A liquid crystal layer is disposed between the first and second substrates.Type: GrantFiled: October 31, 2006Date of Patent: June 9, 2009Assignee: AU Optronics Corp.Inventors: Kuo-Yung Hung, Chih-Ming Chang, Chih-Jen Hu, Chih-Chun Pei
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Patent number: 7542102Abstract: Pixel structures of a color filter substrate, an active device array substrate and a liquid crystal display panel are provided. The pixel structure of the color filter substrate includes a first and second electrode patterns electrically connected to different voltage input terminals. The pixel structure of the active device array substrate includes a first and second pixel electrodes, a first and second gate-drain capacitances and a first and second storage capacitances. The areas of the first and the second pixel electrodes are different, the first and the second gate-drain capacitances are different, and the first and the second storage capacitances are different. In addition, the pixel structure of the liquid crystal display panel includes the pixel structure of the color filter substrate the pixel structure, the active device array substrate and a liquid crystal layer therebetween.Type: GrantFiled: May 14, 2007Date of Patent: June 2, 2009Assignee: Au Optronics CorporationInventor: An-Hsu Lu
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Patent number: 7527680Abstract: Data of a barometric pressure that a barometric pressure sensor outputs, and data of an air volume that an air-volume sensor outputs are input into a system control circuit. The system control circuit is provided with a table storing portion. In the table storing portion, a control table is stored. The control table is formed of a plus supplied-voltage value to fan power set by a barometric pressure value and an air-volume value, and a warning instruction. In a case that the warning instruction is selected based on the barometric pressure value and the air-volume value, the system control circuit turns on a warning-use LED so as to inform a user that a filter is clogged.Type: GrantFiled: September 21, 2005Date of Patent: May 5, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Hirotake Horiguchi, Takeshi Higashino, Ryosuke Sato
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Patent number: 7499127Abstract: First and second polarization plates are disposed on both sides of a liquid crystal panel in which thicknesses of a liquid crystal layer are set up depending on colors of color filters. Then, a first retardation film is disposed between the liquid crystal panel and the first polarization film, and a second retardation film is disposed between the liquid crystal panel and the second polarization film. Assuming that a maximum value of a refractive index in an in-plane direction out of principal indices of refraction is Nx, that a refractive index in an orthogonal direction to the direction of the refractive index which has the value of Nx is Ny, and that a thickness is d, the first and second retardation films are set to satisfy a difference in values of (Nx?Ny)×d equal to or less than 10 nm.Type: GrantFiled: March 2, 2005Date of Patent: March 3, 2009Assignee: Sharp Kabushiki KaishaInventors: Masakazu Shibasaki, Hidefumi Yoshida, Kazuya Ueda
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Patent number: 7492379Abstract: Various embodiments of a sub-pixel octal grouping are disclosed. The octal grouping may comprise three-color sub-pixels with one colored sub-pixel comprising twice the number of positions within the octal sub-pixel grouping as the other two colored sub-pixels. Various embodiments for performing sub-pixel rendering on the sub-pixel groupings are disclosed.Type: GrantFiled: October 22, 2002Date of Patent: February 17, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Thomas Lloyd Credelle, Candice Hellen Brown Elliott, Michael Francis Higgins
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Patent number: 7483096Abstract: A reflective liquid crystal display (LCD) is provided for efficiently preventing white coordinates from being yellowish. The LCD includes a substrate having red color filters, green color filters, and blue color filters. The blue color filters have an overall area smaller than that of the red color filters and the green color filters while blocking green light better than the red color filters and blocking red light better than the green color filters.Type: GrantFiled: February 25, 2005Date of Patent: January 27, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Nam-seok Roh, Soo-guy Rho
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Patent number: 7474368Abstract: A display panel is disclosed. The display panel includes a first substrate, a second substrate, and a pixel and a color filter disposed between the first substrate and the second substrate. The pixel including a plurality of subpixels has a transmitting region and a reflecting region. The color filter includes a plurality of colors corresponding to the subpixels respectively. The adjacent colors of the color filter overlap with each other and the width of the overlapped portion of the transmitting region is greater than that of the reflecting region.Type: GrantFiled: February 6, 2007Date of Patent: January 6, 2009Assignee: AU Optronics Corp.Inventors: Ching-Sheng Cheng, Chih-Jen Hu