With Different Liquid Crystal Thickness For Each Color Of Filter Patents (Class 349/107)
  • Patent number: 8488098
    Abstract: A phase-type diffraction device includes a substrate having a front surface and a solidified liquid crystal layer formed on the front surface of the substrate and constituted by a continuous film containing at least a liquid crystal compound. The solidified liquid crystal layer is constituted by first, second and third regions arranged periodically, the third region being interposed between the first region and the second region. The first region is optically anisotropic and the second region is optically isotropic, the third region is not optically isotropic, a degree of orientation of mesogens of the liquid crystal compound being lower than that of the first region. An in-plane average refractive index ni of the second region is different from an in-plane average refractive index na of the first region and an in-plane average refractive index nm of the third region is between ni and na.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: July 16, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Sosuke Akao, Takeshi Itoi
  • Patent number: 8482700
    Abstract: A panel for a liquid crystal display device includes: a first mother substrate for cutting out color filter substrates including a first cell area corresponding to a first cell and a second cell area corresponding to a second cell therefrom; a first colored layer arranged in the first cell area of the first mother substrate; a second colored layer arranged in the second cell area of the first mother substrate; a second mother substrate for cutting out array substrates therefrom; and liquid crystal sandwiched between the first mother substrate and the second mother substrate. The first colored layer and the second colored layer are made of the same material and have portions which have the same thickness. A hole is formed in the second colored layer so as to make color reproducibility of the second colored layer lower than color reproducibility of the first colored layer.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: July 9, 2013
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shinpei Segawa, Hiroaki Iwato, Yoshiki Watanabe, Kazumi Kanesaka
  • Patent number: 8477269
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate having a first pixel electrode and a first pillar-shaped spacer arranged in an active area, and a second pixel electrode and a second pillar-shaped spacer arranged in a shield area surrounding the active area. A shield layer is formed in the shape of a belt crossing above the first pillar-shaped spacer in the active area and extending to the shield area including a portion above the second pillar-shaped spacer. The height of a first seat layer formed above the first pillar-shaped spacer and including the shield layer, a first color filter layer and an overcoat layer is substantially the same as that of a second seat layer formed above the second pillar-shaped spacer and including the shield layer, a second color filter layer and the overcoat layer.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: July 2, 2013
    Assignee: Japan Display Central Inc.
    Inventors: Satoshi Asada, Daiichi Suzuki, Tetsuo Fukami
  • Patent number: 8462311
    Abstract: A display panel has a portion of a color filter or patterned color layer with a thickness of at least half of the cell gap of the display panel, wherein the repair method includes providing a energy light beam to the portion of the color filter or the patterned color layer in the sub-pixel region with a bright point defect to make the portion of the color filter or patterned color layer have porous structure so that bright point is repaired to become a grey point or a dark point.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 11, 2013
    Assignee: AU Optronics Corp.
    Inventors: Hsueh-Min Yin, Hsin-Chang Huang, Jung-Hsiang Lin, Shen-Yi Huang
  • Patent number: 8421965
    Abstract: 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.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: April 16, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Shouhei Maezawa, Masatoshi Tomonaga, Hiroyuki Takemoto
  • Patent number: 8411237
    Abstract: A liquid crystal device includes display pixels corresponding to at least a color of white or non-coloring and one color different from the color of white or non-coloring. Each of the display pixels corresponding to one color have a transmissive region and a reflective region. Each of the display pixels corresponding to the color of white or non-coloring have only a transmissive region. Colored layers are provided in the display pixels that correspond to one color, and cell-thickness-adjusting layers are included in the reflective region of each of the display pixels corresponding to one color and the transmissive region of each of the display pixels corresponding to the color of white or non-coloring. For the display pixels corresponding to one color, a thickness of a layer crystal layer corresponding to the transmissive region is larger than a thickness of the liquid crystal layer that corresponds to the reflective region.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: April 2, 2013
    Assignee: Sony Corporation
    Inventor: Masahiro Horiguchi
  • Patent number: 8411231
    Abstract: A pixel architecture for compensating for distortions in a flexible substrate of a flexible display, including: a first layer including a thin film transistor (TFT) on a flexible substrate; a second layer disposed above said first layer including a pixel electrode coupled to said TFT for receiving a signal from said TFT; and a third layer including a color filter for filtering light displayed by said pixel, wherein said third layer is aligned to said second layer such that said color filter is substantially aligned to said pixel electrode, said alignment compensating for distortions in said first layer caused by distortions in said flexible substrate.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: April 2, 2013
    Assignee: Plastic Logic Limited
    Inventor: Tim Von Werne
  • Patent number: 8384858
    Abstract: A backlight source has a spectral distribution such that luminances of red and green light are stronger than luminance of blue light. A color filter includes a blue coloring layer that can best transmit a blue light, a red coloring layer that can best transmit a red light, a green coloring layer that can best transmit a green light, and a porous layer in which penetration holes are formed so as to penetrate therethrough in its thickness direction. The blue coloring layer is formed so as to be thicker than the red and green coloring layers. A liquid crystal layer is formed so as to be thinner in a portion facing the blue coloring layer than a portion facing the red and green coloring layers. The porous layer is formed from the same material and to have the same thickness as the blue coloring layer.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: February 26, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kikuo Ono, Kazumi Kanesaka
  • Patent number: 8373809
    Abstract: In a liquid crystal display apparatus realizing a dual view display by bonding a liquid crystal panel and a parallax barrier, the parallax barrier separates display images by treating three pixels including R, G, and B pixels as one unit (one picture element). At this time, luminance variation due to crosstalk concentrates on a right-end pixel among the three pixels constituting the one picture element (in a case where each pixel receives data from a source line immediately on the left of the pixel). Accordingly, the right-end pixel is arranged to be a B pixel that has a low correlation with luminance information and in which influence of crosstalk is hard to be viewed. Further, an applied voltage to be supplied to the display pixel of the B (blue) color and an input gradation are set to have a relationship along a ? curve that makes luminance variation difficult to occur in a low luminance area.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: February 12, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Makoto Shiomi
  • Patent number: 8363187
    Abstract: 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: Grant
    Filed: May 19, 2008
    Date of Patent: January 29, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Shouhei Maezawa, Masatoshi Tomonaga, Hiroyuki Takemoto
  • Patent number: 8339550
    Abstract: Embodiments of the present invention provide a Liquid Crystal Display (LCD) panel, including an upper substrate and a lower substrate between which a liquid crystal layer is sealed. The lower substrate includes a plurality of sub-pixel regions arranged in regular patterns. The upper substrate includes Black Matrixes (BM) and an upper transparent conductive layer which are formed in sequence on the bottom surface of an upper transparent substrate. The lower substrate includes a first metal layer, a dielectric layer, a second metal layer, an organic layer, a first insulation layer, a third metal layer, a second insulation layer, a fourth metal layer, a passivation layer and a lower transparent conductive layer which are deposited in sequence on the upper surface of a lower transparent substrate. Embodiments of the present invention also provide a method for producing the LCD panel.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: December 25, 2012
    Assignee: Infovision Optoelectronics (Kunshan) Co., Ltd.
    Inventors: Hongqing Cui, Te-Chen Chung
  • Patent number: 8329068
    Abstract: A black resin composition capable of forming a black matrix having high OD value and high adhesion as well as high resistance is disclosed. The black resin composition is a black resin composition comprising at least a light shielding agent, a resin and a solvent, which light shielding agent contains at least titanium nitride compound particles, wherein the angle of diffraction 2? of the peak originated from (200) plane of the titanium nitride compound particles when CuK? line is used as the X-ray source is not less than 42.5° and not more than 42.8°. Using this black resin composition allows a thin resin black matrix having a high light shielding property and high resistance to be readily attained.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: December 11, 2012
    Assignee: Toray Industries, Inc.
    Inventors: Yoshihiko Inoue, Wataru Fukushima, Akihiko Watanabe
  • Patent number: 8330904
    Abstract: A color filter using a surface plasmon includes a metal layer; and a transmissive pattern formed in the metal layer, the transmissive pattern comprising a plurality of sub-wavelength holes having a period, wherein a desired color of light is output by selectively transmitting light of a specific wavelength by using the surface plasmon, and the plurality of sub-wavelength holes are arranged in a triangular lattice having a predetermined number of nearest neighboring holes with respect to a central hole.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Min-Sung Yoon
  • Patent number: 8323533
    Abstract: The present invention relates to a composition for preparing a curable resin, comprising a) a compound represented by Formula 1; b) glycidyl (meth)acrylate; c) acid monoanhydride; and d) a solvent, a curable resin manufactured by the composition, and an ink composition comprising the same. The curable resin has a low viscosity and excellent flow properties, and the ink composition is excellent in terms of storage stability, heat resistance and chemical resistance.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: December 4, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Min-Young Lim, Jae-Joon Kim, Mi-Ae Kim, Dae-Hyun Kim, Han-Soo Kim, Yoon-Hee Heo, Ji-Heum Yoo, Sung-Hyun Kim
  • Patent number: 8310634
    Abstract: A liquid crystal display device includes first and second substrates with first and second polarizing layers, a liquid-crystal layer, a matrix-driven electrode group; and a rear-illuminating device. Between the first polarizing layer and the liquid-crystal layer, a first optical compensating member is disposed without a birefringent medium sandwiched between the liquid-crystal layer and the first optical compensating member, and the first optical compensating member is constructed so that when a refractive index thereof in a slow-axis direction in a plane parallel to the substrate is taken as n1, a refractive index in a fast-axis direction in the plane parallel to the substrate is taken as n2, and a refractive index in a thickness direction is taken as n3, the first optical compensating member satisfies n1?n3>n2, and a slow axis thereof in the plane parallel to the substrate is substantially vertical to an optical axis of the liquid-crystal layer.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: November 13, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kentaro Ojima, Daisuke Kajita, Ikuo Hiyama, Masahiro Ishii
  • Patent number: 8303860
    Abstract: A colored curable composition including: (A) a pigment dispersion containing (a-1) a pigment, (a-2) a compound having a pigment mother nucleus structure and an amino group in a molecule, and (a-3) a resin having an acid group and a polymerizable group; (B) an oxime ester initiator; and (C) a polymerizable compound.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: November 6, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Kazuto Shimada, Atsushi Sugasaki
  • Patent number: 8303861
    Abstract: Colored composite microparticles comprising silica and an organic pigment in which the silica is enclosed in the organic pigment and contained in an amount of 0.001 to 9% by weight (calculated as Si) based on the weight of the composite particles. These microparticles have a high tinting strength and are excellent in dispersibility and light fastness.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: November 6, 2012
    Assignee: Toda Kogyo Corporation
    Inventors: Shinji Horie, Hiroko Morii, Hirofumi Nishikawa, Kazuyuki Hayashi
  • Patent number: 8294853
    Abstract: An object of the invention is to accurately and easily manufacture a color filter. A method of manufacturing a color filter comprises: a first step of forming a first rib (220) forming a light shield layer and a second rib (230) having a smaller height than the first rib (220) in pattern on a base layer (1) by means of a photolithography method; a second step of forming a step-forming layer (4) by dripping an optical transmissive material into an area defined by the first and second ribs (220, 230) by means of ink-jet technique; and a third step of forming a coloring layer by dripping an optical coloring material (5) into an area defined by the first rib (220) by means of ink-jet technique after forming the step-forming layer (4).
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: October 23, 2012
    Assignee: TPO Hong Kong Holding Limited Corp.
    Inventor: Yasuhiro Matsushita
  • Patent number: 8289480
    Abstract: A liquid crystal display device comprises plural picture elements including a first picture element and a second picture element; plural switching elements; and plural scanning lines. The plural switching elements include a first switching element electrically connected to the first picture element and a second switching element electrically connected to the second picture element. The plural scanning lines include a first scanning line electrically connected to the first switching element and a second scanning line electrically connected to the second switching element. The second scanning line is located between at least part of the first picture element and the first scanning line. The first scanning line is located between at least part of the second picture element and the second scanning line.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: October 16, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tokio Taguchi, Kazuhiko Tsuda, Mutsumi Nakajima, Keisuke Yoshida, Junichi Yamada
  • Patent number: 8289457
    Abstract: A liquid crystal display includes a first substrate, a second substrate having a first surface and a second surface facing the first substrate, a liquid crystal layer between the first and second substrates, and a touch sensor layer on the first surface. The touch sensor layer includes a first electrode in a first direction on the first surface, a second electrode in a second direction crossing the first direction on the first surface and including first and second portions that are separated by the first electrode, a bridge wire including first and second contacts on the first surface. The first contact is electrically connected to the first portion of the second electrode, and the second contact is electrically connected to the second portion of the second electrode. An insulating layer insulates the bridge wire from the first electrode and exposes the first contact and the second contact.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: October 16, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong-Mo Hwang, Young-Joon Cho, Jae-Jin Pyun, Ki-Tae Kim, Seung-Ho Nam, Hyun-Ju Lee
  • Patent number: 8253895
    Abstract: 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: Grant
    Filed: July 31, 2009
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
  • Patent number: 8253896
    Abstract: A photonic sensor includes a first electrode layer, a second electrode layer, a third electrode layer, a first photon absorption layer, a second photon absorption layer, a third photon absorption layer and a charge blocking layer. The first photon absorption layer includes a dispersion of first nanoparticles, and is configured to transduce a first colored light into corresponding electric charge. The second photon absorption layer includes a dispersion of second nanoparticles, and is configured to transduce a second colored light into corresponding electric charge according to light intensity. The third photon absorption layer includes a dispersion of third nanoparticles, and is configured to transduce a third colored light into corresponding electric charge according to light intensity. The charge blocking layer is formed between the first and second photon absorption layers to block flow of electric charge between the first and second photon absorption layers.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kap-Soo Yoon, Sung-Hoon Yang, Ki-Hun Jeong, Kyung-Sook Jeon, Seung-Mi Seo
  • Patent number: 8184247
    Abstract: An optical compensatory film of a laminated structure comprising a first optically anisotropic layer having an Re(550) of 20 to 100 nm wherein retardation at a wavelength of 550 nm is never 0 nm along any direction and the direction along which the absolute value of retardation at a wavelength of 550 nm reaches minimum does not exist along the normal direction of the layer or on the in-plane of the layer; and a second optically anisotropic layer having an Re(550) of 20 to 150 nm and an Rth(550) of 40 to 110 nm with Re(450) Re(550)<?3 nm and Rth(450)?Rth(550)>3 nm.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: May 22, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Shigeaki Nimura, Michio Nagai, Hiroko Kamee, Hiroshi Satou, Makoto Ishihara
  • Patent number: 8169569
    Abstract: A liquid crystal display includes a first insulating substrate, a data insulating layer disposed on a data wire of the first insulating substrate, and a color filter layer, an organic film layer, and a light shielding layer disposed on the data insulating layer. The organic film layer is positioned on the color filter layer, and the light shielding layer is positioned on the organic film layer in the screen display area. The color filter layer and the light shielding layer contact each other in the peripheral area.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 1, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Kang, Jang-Soo Kim, Se-Ah Kwon
  • Patent number: 8169568
    Abstract: A liquid crystal display device has a first substrate, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first and the second substrates. The first substrate includes a plurality of pixels, each of which includes a thin film transistor and a pixel electrode. The second substrate includes a color filter facing a pixel electrode of one of the pixels, and a black matrix formed on a region except the color filter. The black matrix has an opening that exposes a portion of one of the gate electrodes. External light entering the opening is reflected from the gate electrode.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 1, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Min-Woo Kim
  • Patent number: 8139183
    Abstract: 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 pixel regions; a common line between adjacent gate lines; a thin film transistor at each crossing point of the gate lines and the data lines; red, green and blue color filter patterns sequentially disposed in the pixel regions, respectively; a common electrode over each of the red, green and blue color filter patterns and connected to the common line; and a pixel electrode over the common electrode and connected to the thin film transistor, the pixel electrode overlapping the common electrode.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: March 20, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Gee-Sung Chae
  • Patent number: 8130345
    Abstract: Disclosed is a liquid crystal display which can switch between a wide viewing angle and a narrow viewing angle in a quad type pixel structure including white subpixels. The liquid crystal display comprises: a plurality of quad type pixels each having an R subpixel, a G subpixel, a B subpixel, and a W subpixel; and a plurality of light blocking patterns disposed on the W subpixels, for guiding light from the W subpixels to a side viewing angle, wherein the W subpixels are fixed at specific positions of the quad type pixels respectively, and the R, G, and B subpixels have a different arrangement for each of the quad type pixels adjacent horizontally or vertically to each other.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: March 6, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Jonghoon Woo, Youngbok Lee
  • Patent number: 8130344
    Abstract: A liquid crystal device includes: a liquid crystal layer which is sandwiched between a pair of substrates; a color filter layer has a first coloration layer for transmitting a first light and a second coloration layer for transmitting a second light; first electrodes has a first pixel electrode disposed on a first sub-pixel region corresponding to a planar region of the first coloration layer and a second pixel electrode disposed on a second sub-pixel region corresponding to a planar region of the second coloration layer; and second electrodes each of which faces each first electrode. Any one electrode of each first electrode and each second electrode has a plurality of band-like portions which are arranged at predetermined intervals. A layer thickness of the liquid crystal layer, a width of each band-like portion, and the predetermined intervals within the first sub-pixel region are smaller than they within the second sub-pixel region.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: March 6, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hitoshi Tsuchiya, Tomo Ikebe, Osamu Okumura
  • Patent number: 8120733
    Abstract: A liquid crystal display device includes a first substrate and a second substrate facing each other, a plurality of gate lines and a plurality of data lines on the first substrate crossing each other to define pixel regions, a black matrix layer on the second substrate in regions corresponding to the gate lines and the data lines, color filter layers on the second substrate covering at least the pixel regions, a plurality of column spacers on respective portions of the black matrix layer excluding the color filter layers, and a liquid crystal layer between the first substrate and the second substrate.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: February 21, 2012
    Assignee: LG Display Co., Ltd
    Inventor: Kyoung Mee Lee
  • Patent number: 8120745
    Abstract: A method of fabricating a substrate for a liquid crystal display device includes: disposing a transparent substrate on a stage of a laser apparatus; irradiating a laser beam having a predetermined power onto the transparent substrate to form a light shielding region in the transparent substrate surrounding first to third light transmitting regions; and forming a color filter layer including red, green and blue sub-color filters respectively in the first to third light transmitting regions, wherein boundaries of the red, green and blue sub-color filters correspond to the light shielding region.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: February 21, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Jae-Young Oh
  • Patent number: 8120732
    Abstract: A full-color lateral-electric-field LCD device has an organic transparent film having three different thicknesses for the pixels having RGB colors. The thicknesses dR, dG, dB of the organic transparent film and the representative wavelengths ?R, ?G and ?B of the color filters satisfy the following relationship: dR:dG:dB??R:?G:?B. The different thicknesses provide different thicknesses for the LC layer, to improve the image quality of the LCD device in a slanted viewing direction.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: February 21, 2012
    Assignee: NLT Technologies, Ltd.
    Inventor: Shinichi Nishida
  • Patent number: 8077277
    Abstract: A liquid crystal display device comprising a first optical compensating member disposed without a birefringent medium sandwiched between a liquid-crystal layer and the first optical compensating member. The first optical compensating member is constructed so that when a refractive index thereof in a slow-axis direction in a plane parallel to the substrate is taken as n1, a refractive index in a fast-axis direction in the plane parallel to the substrate is taken as n2, and a refractive index in a thickness direction is taken as n3, the first optical compensating member satisfies n1˜n3>n2 and a slow axis thereof in the plane parallel to the substrate is substantially vertical to an optical axis of the liquid-crystal layer.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: December 13, 2011
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kentaro Ojima, Daisuke Kajita, Ikuo Hiyama, Masahiro Ishii
  • Patent number: 8064010
    Abstract: A liquid crystal display device is provided which includes a substrate having a pixel electrode; and a color filter substrate having a color filter layer on a transparent substrate while having an alignment film formed on an uppermost layer thereof, the substrate and the color filter substrate each having a display region having a plurality of sub-pixels formed thereon, in which the color filter substrate has a liquid crystal layer thickness-adjustment layer formed of a transparent resin layer being partially formed on an inner side of the alignment film; and the liquid crystal layer thickness-adjustment layer has a trench being formed along and between adjacent ones of the sub-pixels, the bottom position of the trench of the liquid crystal layer thickness-adjustment layer being lower than a height of the color filter layer from a surface of the transparent substrate, and the transparent resin layer existing on the bottom of the trench.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: November 22, 2011
    Assignee: Sony Corporation
    Inventors: Toshinori Uehara, Koji Yoshida, Shuhei Yoshida
  • Patent number: 8059233
    Abstract: There is disclosed a transflective liquid crystal display having pixels each including a reflective region and a transmissive region. The aperture ratio of the pixels can be enhanced. End portions of two adjacent color filters are overlapped to form an optically shielding portion for each pixel. The optically shielding portion and the reflective region cooperate to form an optically shielding film acting as a black matrix for the transmissive region. The aperture ratio is enhanced by improving the positional relationship between the reflective regions and the color filters.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: November 15, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Katsuyoshi Ishihara, Hironobu Yamada
  • Publication number: 20110273649
    Abstract: Each pixel formed on a TFT substrate includes a pixel electrode, and a TFT, a color filter, an opposed electrode and an insulating film are interposed between the pixel electrode and the TFT substrate. A liquid crystal layer is interposed between the TFT substrate and an opposed substrate. An alignment film is provided on each surface of the TFT substrate and the opposed substrate, the each surface being in contact with the liquid crystal layer. A material with high photoconductivity is used for forming the alignment film so as to suppress DC afterimage. Meanwhile, each thickness of the color filter for the respective colors is changed for preventing a yellow shift resulting from absorption of high intensity of light with short wavelength by the alignment film.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 10, 2011
    Inventors: Chikae MATSUI, Noboru Kunimatsu, Hidehiro Sonoda, Yuko Matsumoto, Yosuke Hyodo
  • Patent number: 8054424
    Abstract: A transflective liquid crystal display device includes first and second substrates facing each other, a gate line and a data line on the first substrate, the gate and data lines intersecting each other and defining a pixel region having a transmissive region and a reflective region, a thin film transistor at an intersection between the gate line and the data line, a pixel electrode in the pixel region connected to the thin film transistor, an organic insulating layer on the second substrate, the organic insulating layer including a through-hole in the transmissive region, a reflective electrode on the organic insulating layer in the reflective region, a black matrix on the second substrate, a color filter layer on the second substrate in the pixel region, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: November 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Dong Yung Kim
  • Patent number: 8049844
    Abstract: A color filter includes red, green and blue filter segments and is adapted to be used in a liquid crystal display device using, as a light source, a white LED having specified spectral properties. The red filter segment has a 50% transmittance wavelength within a range of 595 to 610 nm and a transmittance of 85% or more at a wavelength of 630 nm. The blue filter segment has a maximum transmittance wavelength of 455 nm or less and a transmittance of 55% or more at a wavelength of 450 nm. A thickness of each of the red, green and blue filter segments is 3.0 ?m or less. A liquid crystal display device including this color filter and the white LED is also disclosed.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: November 1, 2011
    Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.
    Inventors: Satoshi Okutsu, Kenro Sunahara, Atsushi Nishida, Yukino Miyagawa, Tomoyuki Kadowaki, Mie Shimizu, Takeshi Itoi, Koichi Minato
  • Patent number: 8035778
    Abstract: 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: Grant
    Filed: May 20, 2009
    Date of Patent: October 11, 2011
    Assignee: Au Optronics Corporation
    Inventors: Chih-Cheng Chan, Sheng-Wen Cheng
  • Patent number: 8027003
    Abstract: 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: Grant
    Filed: February 9, 2009
    Date of Patent: September 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Wook Do, Ki-Chul Shin, Sung-Min Kang
  • Patent number: 8023072
    Abstract: A color filter substrate is used in a display device including pixels arranged in columns and rows to define a matrix pattern. The color filter substrate includes a transparent substrate and coloring layers, including a first color filter layer, a second color filter layer and an light shielding layer, provided on the transparent substrate. The first and second color filter layers include a first color filter column and a second color filter column, respectively, each of which is arranged for an associated column of pixels. The light shielding layer includes an light shielding column, which is provided for a gap between two adjacent columns of pixels.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: September 20, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihide Tsubata, Tsuyoshi Tokuda, Masayuki Tsuji
  • Patent number: 7990497
    Abstract: An active matrix type display device is disclosed, to reduce a fabrication cost, which comprises first to third gate lines arranged at one direction; first and second data lines arranged orthogonally to the first to third gate lines; a first pixel cell connected to the first gate line and the first data line; a second pixel cell connected to the first gate line and the second data line; a third pixel cell connected to the second gate line and the first data line; a fourth pixel cell connected to the second gate line and the second data line; a fifth pixel cell connected to the third gate line and the first data line; and a sixth pixel cell connected to the third gate line and the second data line, wherein the three predetermined pixel cells of displaying the different colors among the first to sixth pixel cells constitute a first unit pixel for displaying a first unit image; and the three other pixel cells except the pixel cells included in the first unit pixel constitute a second unit pixel for displaying a
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: August 2, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Yong Ho Jang
  • Patent number: 7982830
    Abstract: 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: Grant
    Filed: April 19, 2007
    Date of Patent: July 19, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Hiroyuki Yoshimi, Kentarou Takeda
  • Patent number: 7965355
    Abstract: A transreflective liquid crystal display and a method of manufacturing the same are disclosed. The transreflective liquid crystal display includes a first insulating substrate; a color filter substrate including at least four color filters constituting a unit pixel formed on the first insulating substrate, the color filter substrate representing colors using light coming from outside; a second insulating substrate; a thin film transistor substrate facing the color filter substrate, the thin film transistor substrate including a thin film transistor, a light transmitting electrode, and a light reflective electrode sequentially formed on the second insulating substrate; a light transmitting hole formed in at least one of the color filters at a location corresponding to the light reflective electrode; and a liquid crystal layer interposed between the color filter substrate and the thin film transistor substrate.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: June 21, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Kuhyun Park, Jonghwae Lee
  • Patent number: 7948566
    Abstract: In a liquid crystal display apparatus realizing a dual view display by bonding a liquid crystal panel and a parallax barrier, the parallax barrier separates display images by treating three pixels including R, G, and B pixels as one unit (one picture element). At this time, luminance variation due to crosstalk concentrates on a right-end pixel among the three pixels constituting the one picture element (in a case where each pixel receives data from a source line immediately on the left of the pixel). Accordingly, the right-end pixel is arranged to be a B pixel that has a low correlation with luminance information and in which influence of crosstalk is hard to be viewed. Further, an applied voltage to be supplied to the display pixel of the B (blue) color and an input gradation are set to have a relationship along a ? curve that makes luminance variation difficult to occur in a low luminance area.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: May 24, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Makoto Shiomi
  • Patent number: 7932972
    Abstract: A method of fabricating a substrate for a liquid crystal display device includes: disposing a transparent substrate on a stage of a laser apparatus; irradiating a laser beam having a predetermined power onto the transparent substrate to form a light shielding region in the transparent substrate surrounding first to third light transmitting regions; and forming a color filter layer including red, green and blue sub-color filters respectively in the first to third light transmitting regions, wherein boundaries of the red, green and blue sub-color filters correspond to the light shielding region.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Jae-Young Oh
  • Patent number: 7932973
    Abstract: An electro-optical device includes a plurality of subpixel regions forming a display field and a color filter including a plurality of color layers of which at least one is of an additive primary color. The color layers have different color hues and at least two of the color layers are arranged in at least one of the subpixel regions so as not to overlap with each other in plan view. A method for manufacturing the electro-optical device includes forming the color layers such that at least two of the color layers are arranged in at least one of the subpixel regions so as not to overlap with each other in plan view. An electronic apparatus includes the electro-optical device.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: April 26, 2011
    Assignee: Sony Corporation
    Inventor: Reiko Wachi
  • Patent number: 7929084
    Abstract: A transflective liquid crystal display device includes first and second substrates facing each other, a gate line and a data line on the first substrate, the gate and data lines intersecting each other and defining a pixel region having a transmissive region and a reflective region, a thin film transistor at an intersection between the gate line and the data line, a pixel electrode in the pixel region connected to the thin film transistor, an organic insulating layer on the second substrate, the organic insulating layer including a through-hole in the transmissive region, a reflective electrode on the organic insulating layer in the reflective region, a black matrix on the second substrate, a color filter layer on the second substrate in the pixel region, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: April 19, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Dong Yung Kim
  • Patent number: 7924374
    Abstract: A display device including a light source and a pixelized color filter element is provided. The pixelized color filter element includes a plurality of first pixelized filters, a plurality of second pixelized filters and a plurality of third pixelized filters. The pixelized color filter element has a total reflectance higher than 5% in a wavelength range of 400 to 700 nm. At least one of the first pixelized filters, second pixelized filters and third pixelized filters includes a first layer and a second layer. The first material layer has a transmittance higher than 50% in a wavelength range of 400 to 700 nm. The second material layer has a transmittance higher than 50% in a wavelength range of 400 to 700 nm.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: April 12, 2011
    Inventor: Chih-Neng Chang
  • Patent number: 7923919
    Abstract: The present invention provides an organic electroluminescent panel, a production method thereof, and an organic electroluminescent display device, in which color mixing between adjacent pixels, caused by overflow or pull-in of a liquid material is suppressed and discontinuity (physical and electrical separation by the step) of an upper electrode is reduced when an organic film such as a luminescent layer is formed by an application method such as an ink jet printing method. The organic electroluminescent panel of the present invention is an organic electroluminescent panel comprising a lower electrode, a bank, an organic film, and an upper electrode on a substrate, wherein the organic electroluminescent panel has: two or more bank regions having different film thicknesses; and an organic film region surrounded by the two or more bank regions, the organic film region having a planar shape of a quadrangle or a substantial quadrangle with a rounded vertex or side.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: April 12, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kiyoshi Okano
  • Patent number: 7920232
    Abstract: 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: Grant
    Filed: January 18, 2007
    Date of Patent: April 5, 2011
    Assignee: Fujifilm Corporation
    Inventors: Morimasa Sato, Ichiro Amimori