Alignment Layer Patents (Class 349/123)
  • Publication number: 20130194525
    Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a thin film transistor disposed on the first substrate; an organic layer disposed on the thin film transistor; a pixel electrode disposed on the organic layer; a lower alignment layer disposed on the pixel electrode; a common electrode disposed on the second substrate; and an upper alignment layer disposed on the common electrode, wherein a first free radical included in the organic layer and a second free radical included in at least one of the lower alignment layer and the upper alignment layer are radical bonded.
    Type: Application
    Filed: July 20, 2012
    Publication date: August 1, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Hyup LEE, Sang Gyun KIM, Jang-Hyun KIM, Tae Hoon KIM, Seung Wook NAM, Keun Chan OH, Taek Joon LEE
  • Publication number: 20130194532
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including an insulative substrate, a first electrically conductive layer, a second electrically conductive layer, a third electrically conductive layer, a fourth electrically conductive layer. The first electrically conductive layer includes a gate line located on the insulative substrate, a common potential line and a first pad portion. The second electrically conductive layer includes a common electrode which is located on the insulative substrate and is put in contact with the common potential line, and a second pad portion stacked on the first pad portion. The fourth electrically conductive layer includes a pixel electrode in which a slit facing the common electrode is formed, and a third pad portion which is put in contact with the second pad portion.
    Type: Application
    Filed: January 23, 2013
    Publication date: August 1, 2013
    Inventor: Shin MORITA
  • Patent number: 8497969
    Abstract: A liquid crystal display device includes an array substrate including a pixel electrode which is disposed in each of pixels, a counter-substrate which is disposed to be opposed to the array substrate and includes a counter-electrode which is common to a plurality of the pixels, and a liquid crystal layer which is held between the array substrate and the counter-substrate. The pixel electrode includes a first major electrode portion having a strip shape, and the counter-electrode includes second major electrode portions each having a strip shape, the second major electrode portions being disposed in parallel to the first major electrode portion in a manner that the first major electrode portion is interposed between the second major electrode portions and that the first major electrode portion and the second major electrode portions are alternately arranged.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 30, 2013
    Assignee: Japan Display Central Inc.
    Inventor: Jin Hirosawa
  • Publication number: 20130188119
    Abstract: The present invention provides a liquid crystal display device in which display defects are not easily generated even when an alignment film is not formed. The liquid crystal display device of the present invention includes a pair of substrates; and a liquid crystal layer that is held between the pair of substrates, wherein both substrates of the pair of substrates do not substantially include an alignment film, at least one substrate of the pair of substrates includes a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto, the polymer layer is formed by polymerization of monomers of at least one kind included in a liquid crystal layer composition, and the monomers of at least one kind contain a compound represented by the following formula (1): (wherein A represents an acrylate group, a methacrylate group, an ethacrylate group, a vinyl group, or an allyl group; a represents 0 or 1; and m represents a natural number of 4 to 12).
    Type: Application
    Filed: September 29, 2011
    Publication date: July 25, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Youhei Nakanishi, Takeshi Noma
  • Patent number: 8491973
    Abstract: A photo-alignment material, a liquid crystal display device using the photo-alignment material, and a manufacturing method. The photo-alignment material is a polymer having a photo-reactive ethenyl group on a main chain. When used as a photo-alignment layer, the photo-alignment material enables improved alignment stability against external shocks, light, and heat. The liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer formed between the first and second substrates, and a photo-alignment layer formed at least on the first substrate, with the photo-alignment layer formed from a photo-alignment material having an ethenyl group at a main chain.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: July 23, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Mi Sook Nam
  • Patent number: 8493532
    Abstract: A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 23, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto
  • Patent number: 8493536
    Abstract: A liquid crystal display apparatus includes a liquid crystal layer sealed between a first substrate and a second substrate opposed to each other. Inner surfaces of the first and second substrates have been subjected to aligning treatment to splay-align liquid crystal molecules. The liquid crystal display further includes electrodes formed on the inner surfaces of the first and second substrates to generate an alignment transition electric field to cause the liquid crystal molecules to transit from splay alignment to bend alignment. The alignment transition electric field includes a vertical electric field in the thickness direction of the liquid crystal layer, and a horizontal electric field in a direction parallel to the inner surfaces of the first and second substrates to twist the liquid crystal molecules between the substrates.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: July 23, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kunpei Kobayashi, Norihiro Arai
  • Publication number: 20130182206
    Abstract: A liquid crystal display includes: first and second substrates placed opposite each other; first and second electrodes each provided on one face of the first and second electrodes extending in first and second directions intersecting with each other; and a liquid crystal layer provided between the one face of the first substrate and the one face of the second substrate. A pixel is formed in a region where the first and second electrodes intersect, and a pixel edge of the pixel has a line segment which is oblique relative to the first direction. The first and second substrates are respectively subject to alignment treatment, and the liquid crystal layer is a substantial vertical alignment having a twisted structure, and an alignment direction of liquid crystal molecules at a substantial center in a layer thickness direction and the oblique line segment are not orthogonal.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 18, 2013
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Stanley Electric Co., Ltd.
  • Publication number: 20130182204
    Abstract: The present invention discloses an alignment substrate that includes a base substrate and an alignment layer arranged on the base substrate. A plurality of unit pixels is defined in the base substrate. The alignment layer includes at least two sub-alignment portions dividing the unit pixel into at least two domains. Each sub-alignment portion is arranged in a different domain of the at least two domains and is aligned to have a different pretilt direction from the other sub-alignment portions.
    Type: Application
    Filed: March 7, 2013
    Publication date: July 18, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventor: Samsung Display Co., Ltd.
  • Patent number: 8487069
    Abstract: Disclosed is a liquid crystal photo-alignment agent including polyamic acid or a polyimide including a first structural unit derived from a photo-diamine represented by the following Chemical Formula 1, a second structural unit represented by the following Chemical Formula 2 or a polymer compound combination thereof, and a solvent. In Chemical Formulae 1 and 2, each substituent is the same as defined in the detailed description.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: July 16, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Jae-Deuk Yang, Hee-Young Oh, Myoung-Youp Shin, Mi-Ra Im, Guk-Pyo Jo, Eun-Ha Kim
  • Publication number: 20130176521
    Abstract: In a photo alignment method, a substrate and a mask are aligned so that the substrate is spaced apart from the mask by a predetermined gap. An organic layer is formed on the substrate. The mask has a transmission portion and a light blocking portion. Light is irradiated through the mask in a direction substantially parallel with an interface between the transmission portion and the light blocking portion of the mask. Polymer chains are formed on an upper portion of the organic layer. The polymer chains are aligned in an alignment direction toward an incident direction of the light. Locations of the substrate and the mask are sensed in real time. The mask is transported to a predetermined location with respect to the substrate based on the sensed locations of the substrate and the mask.
    Type: Application
    Filed: December 21, 2012
    Publication date: July 11, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: SAMSUNG DISPLAY CO., LTD.
  • Patent number: 8482702
    Abstract: A liquid crystal display device includes a liquid crystal layer 1 whose state is switchable between a light-transmitting state and a light-scattering state, a front substrate 3 and a rear substrate 2 between which the liquid crystal layer 1 is held, a pair of electrodes 4, 8 between which the liquid crystal layer 1 is interposed and which are configured to apply a voltage across the liquid crystal layer 1, and first and second alignment films 13, 12 respectively provided between the liquid crystal layer 1 and the front substrate 3 and between the liquid crystal layer 1 and the rear substrate 2. The liquid crystal layer 1 includes, in each of the pixels, a continuous wall 10, a plurality of small sections 14 separated by the wall 10, and a plurality of liquid crystal regions 11, each of which is formed in any one of the plurality of small sections 14.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: July 9, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasushi Asaoka, Eiji Satoh, Kiyoshi Minoura, Sayuri Fujiwara
  • Patent number: 8481130
    Abstract: The invention relates to an alignment layer with improved adhesion to liquid crystal (LC) films, to a precursor material used for the preparation of such a layer, to a laminate comprising such a layer and at least one LC polymer film, and to the use of the alignment layer and the laminate for optical, electrooptical, decorative or security uses and devices, wherein the alignment layer and the precursor material comprise at least one reactive mesogen in monomeric, oligomeric or polymeric form.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 9, 2013
    Assignee: MERCK PATENT GmbH
    Inventors: Richard Harding, Alison Linda May, Simon Greenfield, Johan Lub, Ciska Doornkamp, Rene Theodorus Wegh
  • Patent number: 8482707
    Abstract: A liquid crystal display (LCD) panel includes a first substrate, a second substrate, a polymer stabilized alignment (PSA) liquid crystal layer, a first alignment layer, a second alignment layer, and a plurality of pixel structures. The PSA liquid crystal layer is configured between the first and second substrates, and liquid crystal molecules of the PSA liquid crystal layer are substantially arranged in parallel to the first and second substrates. The first alignment layer is configured between the first substrate and the PSA liquid crystal layer and has a first alignment direction. The second alignment layer is configured between the second substrate and the PSA liquid crystal layer. Each pixel structure is configured between the second substrate and the second alignment layer and has a pixel electrode and a first common electrode. The pixel electrode has at least one slit which is overlapped with the first common electrode.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: July 9, 2013
    Assignee: Au Optronics Corporation
    Inventors: Ming-Chun Li, Ying-Chi Lu, Seok-Lyul Lee
  • Patent number: 8482708
    Abstract: According to an exemplary embodiment of the present invention, a liquid crystal layer may be aligned by using an alignment layer including an alignment base layer having a horizontal alignment base layer and a vertical alignment base layer, and an alignment control agent. Accordingly, a multi-domain liquid crystal display having an excellent viewing angle for all grays may be provided. Also, a multi-domain liquid crystal display having a fast response speed as well as an excellent viewing angle for all grays may be provided.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: July 9, 2013
    Assignee: IUCF-Hyu (Industry-University Cooperation Foundation Hanyang University)
    Inventor: Jae-Hoon Kim
  • Publication number: 20130169916
    Abstract: The present invention provides a composition for forming a liquid crystal layer which enables to achieve takt time reduction and high display quality. The liquid crystal display device according to the present invention includes a liquid crystal material, and a monomer, the monomer being a compound having a structure that generates ketyl radicals when undergoing a hydrogen abstraction reaction caused by exposure to light.
    Type: Application
    Filed: July 14, 2011
    Publication date: July 4, 2013
    Applicants: Toyo Gosei Co., Ltd., Sharp Kabushiki Kaisha
    Inventors: Masanobu Mizusaki, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
  • Publication number: 20130169917
    Abstract: In an exposure device, picture elements or pixels of a liquid crystal display device are split into two parts in the width direction, and exposed from different directions, whereby an alignment material film is photoaligned. The exposure device causes two beams of exposure light outputted by two light sources (a first light source and a second light source) to be transmitted through respectively different light transmission regions in a predetermined pattern of a mask, to irradiate regions of an alignment material film formed on a member for exposure, which regions correspond to split regions of pixels or picture elements. The exposure device causes the two beams of exposure light to mutually intersect on the optical path between the first and second light sources and the alignment material film.
    Type: Application
    Filed: August 16, 2011
    Publication date: July 4, 2013
    Applicant: V Technology Co., LTD.
    Inventor: Michinobu Mizumura
  • Publication number: 20130169915
    Abstract: A polarizing liquid crystal panel includes a first substrate including a first base substrate, a first alignment layer, and a first electrode between the first base substrate and the first alignment layer, a second substrate including a second base substrate, a second alignment layer, and a second electrode between the second base substrate and the second alignment layer, the second substrate facing the first substrate, a spacer between the first and second substrates and maintaining a cell gap therebetween, and a liquid crystal flow preventing portion between the first and second substrates. The liquid crystal flow preventing portion extends in a first direction, and restricts movement of the spacer in a second direction substantially perpendicular to the first direction.
    Type: Application
    Filed: November 10, 2012
    Publication date: July 4, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: SAMSUNG DISPLAY CO., LTD.
  • Publication number: 20130162924
    Abstract: The disclosure generally relates to optical elements such as switchable privacy filters useful for displaying information in at least two modes. In the first mode, the viewing angle can be limited to restrict viewing to near-normal orientations. In the second mode, the viewing angle can be increased so that the information can be viewed at larger oblique angles. The disclosure also relates to switchable privacy displays that include the switchable privacy filters.
    Type: Application
    Filed: August 8, 2011
    Publication date: June 27, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Hassan Sahouani, Marie A. Boulos, John J. Stradinger
  • Publication number: 20130162937
    Abstract: According to embodiments of the present invention, there are provided a homeotropic alignment liquid crystal display and a manufacturing method thereof The homeotropic alignment liquid crystal display comprises: a color filter substrate and a TFT array substrate bonded together; liquid crystals provided between the color filter substrate and the TFT array substrate, wherein the TFT array substrate comprises a common electrode layer and a pixel electrode layer, and wherein in the case where a driving voltage is not applied to the pixel electrode layer, the liquid crystals are aligned perpendicularly to the color filter substrate and the TFT array substrate.
    Type: Application
    Filed: August 22, 2012
    Publication date: June 27, 2013
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiaoming Lu, Jaegeon You
  • Patent number: 8470411
    Abstract: A photopolymer mixture is capable of use for a liquid crystal alignment layer. An alignment layer is formed from such a photopolymer mixture. The mixture comprises at least two polymerisable materials which are blended together in proportion so as to give a predetermined, preferably low, surface energy. A low surface energy, e.g., less than 4×10?2 N/m, can result in an alignment layer which imparts a particular orientation to liquid crystal molecules with out requiring any post-cure treatments. The polymerisable materials may be monomers, oligomers, or diluents that form long chain molecules when cured, and the mixture may contain additives to lower the overall surface energy.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: June 25, 2013
    Assignee: ZBD Displays Ltd.
    Inventors: Richard M Amos, Guy P Bryan-Brown, John C Jones, Emma L Wood
  • Publication number: 20130155362
    Abstract: In a photo-alignment liquid crystal panel capable of achieving a uniform display quality and highly reliable photo-alignment properties, and excellent electro-optical properties (transmittance, contrast, viewing angle, and response) for improving a basic performance and a high image quality of a liquid crystal panel and a liquid crystal display device, a structural composition of a polymer, which is preferable as a photo-alignment film, is unclear. The invention optimizes a copolymerization ratio and a modification rate of a photopolymer in order for a compound having photo-alignment properties to be contained as the photo-alignment film so as to enable the photo-alignment film to have the photo-alignment properties, and achieves the discovery of a preferred structural composition of the polymer.
    Type: Application
    Filed: August 23, 2011
    Publication date: June 20, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Shinichi Terashita, Yuko Teraoka, Kouichi Matsuhashi, Akihito Jinda
  • Publication number: 20130155360
    Abstract: A liquid crystal display device includes a liquid crystal display element including a pair of alignment films provided on opposing face sides of a pair of substrates, and a liquid crystal layer including liquid crystal molecules with negative dielectric constant anisotropy provided between the pair of alignment films, wherein at least one of the pair of alignment films includes a compound in which a polymer compound including a cross-linkable functional group as a side chain is cross-linked, a pretilt is conferred on the liquid crystal molecules by the cross-linked compound, and at least one type of a compound represented by the following General Formula 101 or General Formula 102 is included in the liquid crystal layer.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 20, 2013
    Applicant: Sony Corporation
    Inventor: Sony Corporation
  • Publication number: 20130155361
    Abstract: An embodiment of the invention provides a display panel including: a first substrate; a second substrate disposed on the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first alignment layer disposed on a first surface of the first substrate facing the liquid crystal layer, and having a first trench pattern; and a second alignment layer disposed on a second surface of the second substrate facing the liquid crystal layer, and having a second trench pattern, wherein the first alignment layer and the second alignment layer are formed by polymerizing a photopolymerization monomer.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: CHIMEI INNOLUX CORPORATION
    Inventor: Chimei InnoLux Corporation
  • Publication number: 20130148065
    Abstract: The invention provides a liquid crystal display, including: a substrate, wherein the substrate includes a first flat electrode formed thereon; a first alignment layer formed on the first flat electrode; a second substrate disposed oppositely to the first substrate, wherein the second substrate includes a gate line, a data line and a second flat electrode, wherein the gate line intersects with the date line to define a pixel region, the pixel region includes at least one sub-pixel electrode region, and an area of the second flat electrode is smaller than that of the first flat electrode; a second alignment layer formed on the second flat electrode; and a liquid crystal layer formed between the first substrate and the second substrate, wherein the liquid crystal layer has chirality, wherein the sub-pixel electrode region has a multidomain pretilt angle.
    Type: Application
    Filed: September 13, 2012
    Publication date: June 13, 2013
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Cheng-Chung PENG, Shih-Hung FAN
  • Publication number: 20130148064
    Abstract: The present invention discloses a manufacturing method of color film (CF) substrate, a liquid crystal display (LCD) panel, and an LCD device. The purpose of the present invention is achieved by the following technical schemes. A manufacturing method of the CF substrate, wherein the manufacturing method comprises the steps: forming photo spacer (PS) on the CF substrate, and then forming an alignment layer on the CF substrate. The present invention, by using the PS contacting with an array substrate and a CF substrate, replaces the manufacture procedure of the electrode layer with the manufacture procedure of the PS, and the CF substrate is formed with PS; the electrode layer is then formed and the surface of the electrode layer opposite to the substrate is covered by the electrode layer. So the PS can transmit the pixel electrode signal to the CF substrate to replace the Au ball.
    Type: Application
    Filed: December 4, 2011
    Publication date: June 13, 2013
    Inventors: Minghung Shih, Zhenghua Li
  • Publication number: 20130141682
    Abstract: The invention discloses an LCD panel, an LCD device, and a manufacturing method thereof. The LCD panel comprises substrate(s); the substrate is provided with an oriented film and a frame adhesive, and the frame adhesive is formed on the periphery of the oriented film; the oriented film comprises an ordinary oriented film covering the effective display area and a porous oriented film arranged around the edge of the ordinary oriented film for adsorbing the impurities in the frame adhesive area. The oriented film in the LCD panel of the invention comprises a porous oriented film; the porous oriented film can absorb the foreign particles produced by the frame adhesive to prevent the impurities in the frame adhesive area from permeating into the effective display area, can effectively prevent the impurities produced by the frame adhesive from permeating into the effective display area to become liquid crystal pollutants, and can avoid pixel to produce stains or non-uniform display.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 6, 2013
    Inventor: Yu Song
  • Patent number: 8455062
    Abstract: To provide a liquid crystal display panel that has high contrast and reduced display deficiency, a liquid crystal display panel of the present invention includes: a pair of substrates (1) and (2) facing each other; and a liquid crystal layer (3) sandwiched between the pair of substrates (1) and (2), the pair of substrates (1) and (2) being provided with a pair of respective alignment films (4) and (5) formed thereon and facing each other, the pair of alignment films (4) and (5) being provided with respective polymer films (6) and (7) formed thereon and each made of a monomer in the liquid crystal layer (3), the pair of alignment films (4) and (5) containing a macromolecular compound having a side chain containing a fluorine atom, the liquid crystal layer (3) containing a polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer films (6) and (7) each being made of the polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer fil
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: June 4, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Nakai, Masanobu Mizusaki, Youhei Nakanishi
  • Patent number: 8456607
    Abstract: It is an object of the present invention to suppress light leakage in a dark state which is generated by rubbing treatment. A liquid crystal material containing an ultraviolet curable liquid crystalline monomer at a concentration of more than 0 wt % and not more than 1.0 wt % is used for a liquid crystal layer, and the liquid crystal layer is irradiated with ultraviolet rays. By applying such a liquid crystal layer to a liquid crystal display device, light leakage in a dark state can be suppressed, and the black display can be improved. Therefore, a liquid crystal display device with an excellent contrast and high display quality can be obtained.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: June 4, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Takeshi Nishi, Tetsuji Ishitani
  • Publication number: 20130135570
    Abstract: The present invention provides a composition for forming a liquid crystal layer from which a liquid crystal display device hardly generating image sticking can be obtained.
    Type: Application
    Filed: July 27, 2011
    Publication date: May 30, 2013
    Applicant: Toyo Gosei Co., Ltd.
    Inventors: Masanobu Mizusaki, Satoshi Enomoto, Yuki Hara
  • Patent number: 8451408
    Abstract: A liquid crystal lens cell set includes a plurality of liquid crystal lenses overlapping to each other. Each of the liquid crystal lenses is supported between a pair of flat layers. One of the layers supports a planar electrode made of ITO. The other electrode, also formed of ITO, is supported in the center of the opposing substrate and projects toward the center of the liquid crystal layer. A power supply creates a potential difference between the electrodes and imposes a non-uniform electric field on the liquid crystal modules which aligns them in which a way as to act as a lens. By varying voltage between the electrodes the focal length of the lens may be controlled. A central electrode may be in the form of a beam or of a pointed tip. An electrode having a central hole may be associated with the central electrode or the planar electrode.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: May 28, 2013
    Assignee: Silicon Touch Technology Inc.
    Inventors: Chi-Yuan Chin, Kuei-Jyun Chen, Yong Cao, Rong-Li Liu, Geng Zhong, Zheng Xu, Ling-Yuan Tseng
  • Patent number: 8450517
    Abstract: The invention is to provide a photosensitive compound suitable for a photoalignment method, a photosensitive polymer prepared from the compound, a photoaligning agent by using the compound and a liquid crystal alignment film prepared from the photoaligning agent. A photosensitive compound represented by formula (1): in formula (1), Y1 is a divalent group represented by formula (2-1) or (2-2); A1 is 1,4-phenylene or 1,4-cyclohexylene; Z1 is a single bond, —COO— or —OCO—; R1 and R2 are each independently hydrogen, fluorine or alkyl having 1 to 5 carbons; Q1 is independently a single bond or alkylene having 1 to 12 carbons; and n is 0 or 1. In formulas (2-1) and (2-2), W1 and W2 are each independently hydrogen, alkyl having 1 to 3 carbons or alkoxy having 1 to 3 carbons.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: May 28, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Daisuke Ootsuki, Kazumi Nara, Junichi Inagaki, Mayumi Tanabe
  • Publication number: 20130128176
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode having a first width in a first direction and a first edge extending in a second direction, and a sub-pixel electrode. The sub-pixel electrode has a second width, which is greater than the first width in the first direction, has a third width, which is a maximum width in the first direction at a central portion of the sub-pixel electrode, has a fourth width in the second direction at a position with a first distance from the first edge in the first direction, and has a fifth width, which is less than the fourth width at a position with a second distance, which is greater than the first distance, from the first edge in the first direction.
    Type: Application
    Filed: January 10, 2013
    Publication date: May 23, 2013
    Inventor: Jin HIROSAWA
  • Publication number: 20130128200
    Abstract: A liquid crystal display, including a first substrate and a second substrate, each having a plurality of unit pixel areas and facing each other, and a liquid crystal layer between the first substrate and the second substrate, in which the plurality of unit pixel areas each have a plurality of domains. In a first domain of the plurality of domains, a first alignment layer of the first substrate and a second alignment layer of the second substrate are photo-aligned, and in a second domain of the plurality of domains, the second alignment layer of the second substrate is photo-aligned twice and the first alignment layer of the first substrate is not photo-aligned.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 23, 2013
    Inventors: Yong Hwan SHIN, Hak Sun Chang, Min-Sik Jung, Baek Kyun Jeon, Jun Woo Lee
  • Publication number: 20130128202
    Abstract: The present invention provides a liquid crystal display device in which a high wettability can be achieved, and also image sticking seldom occurs. The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of less than 50%.
    Type: Application
    Filed: July 27, 2011
    Publication date: May 23, 2013
    Inventors: Masanobu Mizusaki, Youhei Nakanishi, Takeshi Noma, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
  • Publication number: 20130128201
    Abstract: A liquid crystal display device (100) includes: a pair of substrates (10, 20) each having an electrode; a liquid crystal layer (30) interposed between the pair of substrates; at least one photo-alignment layer (12) provided between at least one of the pair of substrates and the liquid crystal layer; and an alignment sustaining layer (14a, 14b) provided on the photo-alignment layer, the alignment sustaining layer containing a polymerization product generated through polymerization of at least one kind of bifunctional monomer. In the liquid crystal layer, at least two regions (R1, R2) are formed in one pixel region, the at least two regions (R1, R2) differing in terms of pretilt angles of liquid crystal molecules as regulated by the photo-alignment layer and the alignment sustaining layer.
    Type: Application
    Filed: July 22, 2011
    Publication date: May 23, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Noma, Masanobu Mizusaki, Yohei Nakanishi
  • Patent number: 8445080
    Abstract: An alignment layer according to an exemplary embodiment of the present invention includes a polyimide, wherein the polyimide is derived from a composition including a dianhydride-based compound, and a compound represented by a Chemical Formula 1: wherein, in the above Chemical Formula 1, X1 and X2 are independently F, Cl, or CN, and R1 is a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C1-C12 alkoxy group, a substituted or non-substituted C1-C12 halogen-containing alkyl group, a substituted or non-substituted C1-C12 halogen-containing alkoxy group, or a combination thereof.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 21, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ho-Yun Byun, Jeong-Uk Heo, Ji-Yoon Jung, Na-Young Shin
  • Patent number: 8441605
    Abstract: The present invention provides a polarizing plate including: a layer of polarizer for polarizing incident light and emitting the polarized light; and a coating type optically anisotropic layer disposed on the side to which the polarized light is emitted from the polarizer layer.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 14, 2013
    Assignee: Japan Display West Inc.
    Inventor: Eiji Sakai
  • Publication number: 20130114030
    Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a first base substrate, a pixel electrode disposed on the first base substrate and including a plurality of branch portions, and a first alignment layer disposed on the pixel electrode. The second substrate includes a second base substrate, a common electrode disposed on the second base substrate, and a second alignment layer disposed on the common electrode.
    Type: Application
    Filed: April 4, 2012
    Publication date: May 9, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Gi SEONG, Joon-Hyung PARK, Jin-Lak KIM, Keunchan OH, Jinhyeong LEE, Kangsub JUNG, Kyungseon TAK
  • Patent number: 8435609
    Abstract: The present invention provides a liquid crystal alignment agent and a liquid crystal alignment film formed therefrom, as well as a liquid crystal display element provided with the liquid crystal alignment film. More specifically, the present invention provides a liquid crystal alignment agent and liquid crystal alignment film formed therefrom, as well as a liquid crystal display element provided with the liquid crystal alignment film without image sticking problems and having superior voltage holding ratio. The liquid crystal alignment agent includes: a polymer (A) obtained from a reaction between tetracarboxylic dianhydride compound and diamine compounds, an epoxy compound (B), and an organic solvent (C). Wherein the liquid crystal alignment agent is coated on a glass substrate, and heated for 15 minutes at 220° C. to forth a hard coating film. The hard coating film is extracted for 72 hours by using acetone at 60° C.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 7, 2013
    Assignee: Chi Mei Corporation
    Inventor: Huai-Pin Hsueh
  • Patent number: 8432519
    Abstract: A pixel includes a plurality of first linear alignment regulating structures (22) provided on the liquid crystal layer side of a first substrate and a plurality of second linear alignment regulating structures (44) provided on the liquid crystal layer side of a second substrate. The first and second linear alignment regulating structures each have a first component (22a, 44a) extending along a first axis and a second component (22b, 44b) extending along a second axis which is different from the first axis, the second linear alignment regulating structures being linear dielectric protrusions. The liquid crystal display device further includes a connection dielectric protrusion (45a, 45b, 45c) for interconnecting two linear dielectric protrusions which belong to pixels adjoining each other and which are not collinear.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: April 30, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiro Yoshida, Takahiro Sasaki, Yasunao Iwata
  • Patent number: 8432517
    Abstract: A solution for an alignment film of a liquid crystal display device includes a photo decomposition type polyimide acid which forms the alignment film in response to radiation of a polarized light, wherein a viscosity of the solution is not more than 35 mPa·s.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 30, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
  • Patent number: 8432521
    Abstract: A liquid crystal display (LCD) includes: a first substrate; a second substrate facing the first substrate; a first electrode and a second electrode formed on the first substrate; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein a first alignment polymer configured to provide an alignment force to the liquid crystal is at a portion of the liquid crystal layer near the first substrate.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 30, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong-Kyu Jang
  • Publication number: 20130100387
    Abstract: The present invention provides a liquid crystal panel and an alignment film thereof, and the alignment film is made of a modified polyimide which has conjugated double bond at side chain. Resistance value of the alignment film is less than the resistance value of a liquid crystal material of the liquid crystal panel by properties of the conjugated double bond that can reduce the resistance value of a prior art polyimide. In addition, improving the imidization ratio of a modified polyimide alignment film is important. The present invention is conducted the charged ion from liquid crystal layer to the alignment film by the conjugated double bond of the modified polyimide at the side chain to prevent the increase in the ion density of the liquid crystal in part of this area, and improve the problem of image sticking.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chung-Ching Hsieh, Cheng-ming He
  • Publication number: 20130100388
    Abstract: A display device includes an electrode layer and a liquid crystal layer. The electrode layer has a first electrode and a second electrode. The second electrode is opposed to the first electrode and having a plurality of openings extending in a same extending direction. The liquid crystal layer is disposed on the electrode layer. The liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 25, 2013
    Applicant: JAPAN DISPLAY WEST, INC.
    Inventor: JAPAN DISPLAY WEST, INC.
  • Patent number: 8425989
    Abstract: A photoalignment material and a method of manufacturing of a display substrate using the photoalignment material are disclosed. The photoalignment material includes a photoalignment polymer, a photoalignment additive, and an organic solvent. When the photoalignment additive is used, a side reaction due to ultraviolet (UV) light may be prevented, and the stability of alignment layer may be improved.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: April 23, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gyo-Jic Shin, Hyun-Ku Ahn, Hoi-Lim Kim
  • Patent number: 8427610
    Abstract: A liquid crystal display device includes a pair of substrates provided opposite to each other, a common electrode provided on one of the pair of substrates, and a pixel electrode provided on the other of the pair of substrates. A vertical alignment type liquid crystal is sealed between the pair of substrates. An alignment film is polymerizable upon irradiation of UV, and is obtained by polymerizing substantially the entire alignment film with a voltage applied between the electrodes after the liquid crystal is sealed between the substrates. A pixel region has areas whose electro-optical characteristics are different from each other because of a difference between applied voltages at the time of polymerization.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: April 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuya Ueda, Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Kenji Okamoto, Yuichi Inoue, Seiji Tanuma
  • Patent number: 8427617
    Abstract: A liquid crystal display panel includes a pair of substrates which are opposed to each other, and a liquid crystal layer which is interposed between the pair of substrates. One of the pair of substrates is provided with a plurality of scanning lines and a plurality of signal lines which are arranged in a matrix shape in a display area. Lower electrodes are each formed in each of sub-pixel areas partitioned by the plurality of scanning lines and the plurality of signal lines. An insulating film is formed in the display area so as to cover the lower electrodes. Upper electrodes are formed in the display area through the insulating film, and each have a plurality of slits in each of the sub-pixel area, and an alignment film which is formed on the upper electrodes and slit-shaped openings close to the liquid crystal layer.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: April 23, 2013
    Assignee: Sony Corporation
    Inventors: Shinichiro Tanaka, Yasuhiro Nakanishi
  • Patent number: 8427611
    Abstract: A production method for making a liquid crystal display device includes subjecting a first alignment film and/or a second alignment film to scanning exposure continuously over a plurality of pixel regions; the scanning exposure including, in an inside of each of a plurality of pixel regions, a first scanning exposure for aligning liquid crystal molecules in a first alignment direction and a second scanning exposure for aligning liquid crystal molecules in a second alignment direction. The second alignment direction may be parallel and opposed to the first alignment direction. In the exposures, a light beam may be made incident from a oblique direction to a normal line on the substrate surface.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Hakoi, Iichiro Inoue, Koichi Miyachi
  • Patent number: 8421970
    Abstract: A LCD device and a method for manufacturing the same are disclosed which have a simplified manufacturing process and decrease the fabrication time by forming a pixel electrode without using an additional photoresist pattern. The method includes forming an electrode layer on a first substrate; forming a predetermined alignment layer pattern on the electrode layer; and forming a pixel electrode pattern by patterning the electrode layer using the alignment layer pattern as a mask.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: April 16, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Byung Hyuck Chung