Alignment Layer Of Specified Composition Patents (Class 428/1.2)
  • Patent number: 11280944
    Abstract: The optical element is an optical element comprising a first optically anisotropic layer which is a cured layer of a liquid crystal composition containing a first disk-like liquid crystal compound, in which the optical element has a liquid crystal alignment pattern in which an optical axis of the first disk-like liquid crystal compound is parallel to a surface of the first optically anisotropic layer, the first optically anisotropic layer is disposed along at least one direction in a plane of the first optically anisotropic layer, and orientation of the optical axis of the first disk-like liquid crystal compound rotationally changes continuously, and the orientation of the optical axis rotates by 180° with a period of 0.5 ?m to 5 ?m.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: March 22, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Hiroshi Sato
  • Patent number: 11233189
    Abstract: A form birefringent optical element includes a structured layer and a dielectric environment disposed over the structured layer. At least one of the structured layer and the dielectric environment includes a nanovoided polymer, the nanovoided polymer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Actuation of the nanovoided polymer can be used to reversibly control the form birefringence of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: January 25, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Kenneth Diest, Andrew John Ouderkirk, Gregory Olegovic Andreev, Erik Shipton, Tanya Malhotra, Barry David Silverstein, Christopher Yuan Ting Liao
  • Patent number: 11214642
    Abstract: Shape-programmable liquid crystal elastomers. The shape-programmable liquid crystal elastomers being synthesized by filling an alignment cell with liquid crystal monomers. The liquid crystal monomers align to a surface of the alignment cell and then are polymerized with a dithiol chain transfer agent. The alignment cell is configured to impose a director orientation on a portion of the shape-programmable liquid crystal elastomer. For some embodiments, liquid crystal elastomer laminates are prepared by arranging a plurality of liquid crystal elastomers such that a director orientation of each liquid crystal elastomer of the plurality is in registered alignment with an adjacent liquid crystal elastomer of the plurality. The arrangement is secured and the plurality of liquid crystal elastomers cured.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: January 4, 2022
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Nicholas P Godman, Timothy J White, Hilmar Koerner, Benjamin A Kowalski, Anesia D Auguste, Tyler C Guin
  • Patent number: 11209874
    Abstract: A display device includes a display panel to display an image; an input sensor disposed on the display panel; a flexible circuit board attached to the input sensor; a compensation film disposed on the input sensor and spaced apart from the flexible circuit board; and an anti-reflector disposed on the flexible circuit board and the compensation film. The compensation film has a thickness is greater than that of the flexible circuit board and less than or equal to a distance between the anti-reflector and the input sensor.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: December 28, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: ChangBum Kim, Youngsik Kim, Jiyeon Baek
  • Patent number: 11193067
    Abstract: According to the present invention, a liquid crystal aligning agent is configured to contain a polymer [P] which has a partial structure represented by formula (1) and comprises a photo-alignment group. In formula (1), each of R1 and R2 independently represents a hydrogen atom, a halogen atom or a monovalent organic group having one or more carbon atoms; and each of X1 and X2 independently represents —OH, —NH2 or a monovalent organic group having one or more carbon atoms, provided that at least one of X1 and X2 represents “—OR3” or “—NR3R4” (wherein each of R3 and R4 independently represents a hydrogen atom or a monovalent organic group having one or more carbon atoms).
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: December 7, 2021
    Assignee: JSR CORPORATION
    Inventors: Takashi Okada, Yoshitaka Murakami, Ken-ichi Itou
  • Patent number: 11189852
    Abstract: Polymer-based electrolyte materials that may be used as proton exchange membranes in proton exchange membrane fuel cells are described. The disclosed polymer electrolyte materials can be generally defined by a general 1,3-dicarbonyl repeat unit that may include various side chain and main chain constituents changing the acidity of the C—H proton(s) located between the carbonyl groups. Accordingly, by varying such side-chain and main-chain constituents, the proton-conduction properties the disclosed proton exchange membranes can be manipulated, and methods of producing the same. Methods of producing such polymer electrolyte materials are also disclosed.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: November 30, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Natasha Teran, Malar Azagarsamy, Hany Eitouni
  • Patent number: 11084959
    Abstract: Curable compositions are provided including a curable system that requires a thermally generated amine to cause curing of the system, and a self-assembled particle distributed in the curable system. The curable system contains at least one reactive moiety and the self-assembled particle comprises a reactive amine ionically bound to a chromonic network. A multilayer article is also provided, including a substrate, a chromonic amine layer disposed on the substrate, and a curable layer disposed on the chromonic amine layer. Methods of making a cured composition and of adhering two substrates together are further provided.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: August 10, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Hassan Sahouani, Ying Lin, Mary M. Caruso Dailey, Jing Fang, Kim M. Vogel, Michael A. Kropp, Matthew J. Kryger
  • Patent number: 11078424
    Abstract: Provided is a liquid crystal aligning agent composition including a liquid crystal polymer together with a polyimide-based (co)polymer, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 3, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hyeongseuk Yun, Jung Ho Jo, Jun Young Yoon, Hoonseo Park
  • Patent number: 11061327
    Abstract: A polyimide polymer that includes the reaction product of: (a) at least one diamine selected from the group consisting of a diamine of Structure (Ia) and a diamine of Structure (Ib), (b) at least one diamine of Structure (II), (c) at least one tetracarboxylic acid dianhydride, and optionally (d) at least one compound containing a first functional group reactive with an amine or an anhydride and at least one second functional group selected from the group consisting of a substituted or unsubstituted alkenyl group and a substituted or unsubstituted alkynyl group. Each variable in the above formulas is defined in the specification.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 13, 2021
    Assignee: Fujifilm Electronic Materials U.S.A., Inc.
    Inventors: William A. Reinerth, Binod B. De, Sanjay Malik, Raj Sakamuri, Ognian N. Dimov, Ahmad A. Naiini
  • Patent number: 10968392
    Abstract: Provided are a liquid crystal alignment film capable of being given anisotropy through photoalignment and stable to light, and a liquid crystal display device capable of keeping a high voltage holding ratio without degradation of display quality even when exposed to strong light for a long period of time. To provide these, used is a liquid crystal aligning agent for photoalignment which contains a polymer having a structural unit containing a photoreactive structure and in which the structural unit containing a photoreactive structure undergoes chemical reaction by heating.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: April 6, 2021
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yohei Koseki, Takehiko Kanbara
  • Patent number: 10914987
    Abstract: A complex (10) includes a liquid crystal component (13) and a support (11, 12) of the liquid crystal component (13), in which a lubricating interface derivation region (16) is formed between the liquid crystal component (13) and the support (11, 12). An optical element includes a pair of substrates (11, 12) having electrodes (18, 19) on at least one substrate (11), and a liquid crystal component (13) with which a space between the pair of substrates (11, 12) is filled, in which a lubricating interface derivation region (16) is formed between the pair of substrates (11, 12) and the liquid crystal component (13). It is preferable that the lubricating interface deriving agent (14) is present in the lubricating interface derivation region.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: February 9, 2021
    Assignees: KYOTO UNIVERSITY, KYUSHU UNIVERSITY, NAT'L UNIVERSITY CORPORATION, SHARP KABUSHIKI KAISHA, DIC CORPORATION
    Inventors: Jun Yamamoto, Masumi Yamashita, Waki Sakatsuji, Yoichi Takanishi, Shogo Kato, Hirotsugu Kikuchi, Yasushi Okumura, Hiroki Higuchi, Rijeesh Kizhakidathazhath, Takahito Kanzaki, Yudai Kawashima, Gimpei Machida, Hiroya Nishikawa, Koichi Miyachi, Kiyoshi Minoura, Isa Nishiyama
  • Patent number: 10890706
    Abstract: An optical device has a light guide plate configured to guide light within a plane parallel to an emission surface thereof, and a plurality of optical deflectors arranged two-dimensionally within a plane parallel to the emission surface. Each of the optical deflectors deflects light propagating through the light guide plate, and causes the emission surface to output light forming an image in a space. Each of the optical deflectors is configured to spread the light incident thereon that has an intensity distribution corresponding to an image in a direction orthogonal to the light guide direction of the light guide plate in a plane parallel to the emission surface, and cause the emission surface to output the light which groups the light from the plurality of optical deflectors arranged along a direction orthogonal to the light guide direction, such that light radiating from the image is formed.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 12, 2021
    Assignee: Omron Corporation
    Inventors: Masayuki Shinohara, Yasuhiro Tanoue, Norikazu Kitamura, Mitsuru Okuda, Kazuyuki Okada, Norihisa Kanzaki, Takuma Iwase
  • Patent number: 10844174
    Abstract: A low dielectric polyimide composition comprises an aliphatic anhydride, a long chain diamine, and an ester diamine. A polyimide made of such low dielectric polyimide composition has low polarizability group, thus the dielectric constant of the polyimide is lower. A polyimide made of the low dielectric polyimide composition, a polyimide film using the polyimide, and a copper clad laminate using the polyimide film are also provided.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 24, 2020
    Assignee: Zhen Ding Technology Co., Ltd.
    Inventors: Nan-Kun Huang, Shou-Jui Hsiang, Yu-Wen Kao, Szu-Hsiang Su
  • Patent number: 10788715
    Abstract: A photo-alignment material in which an alignment film can be formed parallel to a vibration direction of light and a tilt angle of the alignment film is easily controlled and a photo-alignment method using the photo-alignment material are provided. A photo-alignment material of the present invention contains a photo-responsive substance having a threshold value of responding light intensity.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 29, 2020
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, DIC CORPORATION
    Inventors: Motoi Kinoshita, Atsushi Shishido, Isa Nishiyama
  • Patent number: 10725216
    Abstract: The onboard camera is mounted in a vehicle to shoot a driving environment of the vehicle by receiving external light from outside of the vehicle, the onboard camera includes: a camera unit having a lens unit which generates an image by receiving the external light and an image-capturing device which generates an image signal based on the image generated by the lens unit; and a polarization plate arranged in front of the camera unit, the image-capturing device constituting the camera unit is a CMOS image sensor, and the polarization plate is a polarization plate whose cross transmittance with respect to S-polarized wave having a wavelength from 420 nm to 700 nm is 5 to 20% or a polarization plate whose parallel transmittance with respect to natural light having a wavelength from 420 nm to 700 nm is 45 to 60%.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: July 28, 2020
    Assignee: MAXELL, LTD.
    Inventor: Koji Hirata
  • Patent number: 10620480
    Abstract: A liquid crystal display includes: a first substrate; a second substrate overlapping the first substrate; a liquid crystal layer between the first substrate and the second substrate and including liquid crystal molecules; and a plurality of protrusions between the first substrate and the liquid crystal layer, between the second substrate and the liquid crystal layer, or a combination thereof, wherein the plurality of protrusions includes a polymer of a compound represented by Formula 1.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 14, 2020
    Assignee: SAMSUNG DISPLA CO., LTD.
    Inventors: Gi Hoon Yang, Duck Jong Suh, Ho Lim, Suk-Kung Chei, Min-Joo Han
  • Patent number: 10613390
    Abstract: An IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals comprises: a pair of substrates, at least one which is transparent; a liquid crystal layer disposed between the pair of substrates; a group of electrodes formed on at least one of the pair of substrates to apply an electric field to the liquid crystal layer; plural active elements connected to the group of electrodes; and an orientation control film disposed on at least one of the pair of substrates, wherein said orientation control film is made of a photosensitive polyimide and a polyamide acid ester and is given orientation control ability by being irradiated with substantially linearly polarized light.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 7, 2020
    Assignees: Japan Display Inc, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Patent number: 10526540
    Abstract: The present invention relates to a liquid crystal aligning agent for use as an alignment layer for liquid crystal display. More specifically, the present invention relates to a liquid crystal aligning agent capable of improving an imidization rate and thus exhibiting an excellent alignment state, a liquid crystal alignment layer comprising the same, a preparation method thereof and a liquid crystal display comprising the liquid crystal alignment layer.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Jung Ho Jo, Hang Ah Park, Hyeong Seuk Yun, Hee Han, Jun Young Yoon
  • Patent number: 10428274
    Abstract: A liquid crystal alignment agent for photo-alignment for providing an aligning member has excellent photoreaction efficiency and is capable of aligning polymerizable liquid crystals with high sensitivity. A liquid crystal alignment agent for photo-alignment includes (A) a resin having a side chain including a structure of Formula (1) and (B) a compound of Formula (2), an alignment member obtained from the liquid crystal alignment agent, and a retardation member: wherein X1 is a benzene ring which may be arbitrarily substituted with an substituent, R is a substituent selected from OH and NH2, R1, R2, R3, R4 and R5 are each independently a substituent selected from a hydrogen atom, a halogen atom, C1-6 alkyl, C1-6 haloalkyl, etc., and n is an integer of 0 or 1.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 1, 2019
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Jun Ito, Yuta Kanno, Tadashi Hatanaka
  • Patent number: 10329486
    Abstract: The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: June 25, 2019
    Assignee: ROLIC AG
    Inventors: Izabela Bury S. Pires, Sabrina Chappellet, Mohammed Ibn-Elhaj, Frederic Lincker
  • Patent number: 10274786
    Abstract: A liquid crystal display device comprises: a first substrate; an organic layer disposed on the first substrate; a pixel electrode disposed on the organic layer; a plurality of slits defined in the pixel electrode and configured to exposed a surface of the organic layer; a liquid crystal alignment film disposed on a surface of the pixel electrode and on the surface of the organic layer exposed by the plurality of slits; and a plurality of liquid crystal molecules disposed on the liquid crystal alignment film, wherein the liquid crystal alignment film includes a first region overlapping the plurality of slits and a second region overlapping the pixel electrode, wherein the second region has a surface energy different from a surface energy of the first region.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: April 30, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Ho Son, Sun Young Kwon, Tae Hoon Kim, Kyung Hae Park, Joon Hyung Park, Ji Hong Bae, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee, Ji Eun Jang, Hye Lim Jang
  • Patent number: 10216030
    Abstract: A color-filter-on-array (COA) type liquid crystal panel and a manufacturing method thereof are disclosed. An alignment film in the COA type liquid crystal panel is formed by a photo-alignment technology of an ultraviolet induced multi-domain vertical alignment (UV2A). Also, a problem of image sticking of an existing COA type liquid crystal display is improved by controlling the dielectric constant (??) of the liquid crystal molecules of a liquid crystal layer in the COA type liquid crystal panel.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: February 26, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yongchao Zhao, Chungching Hsieh, Xiang Li, Yanjun Song
  • Patent number: 10196568
    Abstract: The present invention provides a method for producing a polymerizable liquid crystal composition which produces films being uncolored and having no cissing and good alignment when applied to a substrate, and also provides a polymerizable liquid crystal composition produced by the method and an optically anisotropic body using the polymerizable liquid crystal composition. Specifically, the present invention provides a method for producing a polymerizable liquid crystal composition, the method comprising a step (I) of preparing a polymerizable solution by mixing at least one polymerizable compound having at least one polymerizable functional group and one or two or more organic solvents and heating and stirring the resultant mixture; and a step (II) of mixing the polymerizable solution with a polymerization initiator, and also provides a polymerizable liquid crystal composition produced by the method and an optically anisotropic body using the polymerizable liquid crystal composition.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: February 5, 2019
    Assignee: DIC CORPORATION
    Inventors: Koichi Endou, Yasuhiro Kuwana, Hidetoshi Nakata, Mika Yamamoto, Kunihiko Kotani, Hiroshi Hasebe, Yoshiyuki Ono
  • Patent number: 10131843
    Abstract: The present invention relates to a vertical alignment layer including a cyclic olefin copolymer, and more specifically, the present invention relates to a vertical alignment layer capable of having alignment even in a low temperature process, and exhibiting excellent liquid crystal vertical alignment by including a cyclic olefin copolymer having a specific substituent.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 20, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Eun Seok Park, Jung Ha Park, Dai Seung Choi, Seung Yeon Hwang, Min Hyung Lee
  • Patent number: 10108050
    Abstract: A photoalignment agent is provided. The photoalignment agent includes a copolymer of at least one of a cyclobutanedianhydride (CBDA) and a cyclobutanedianhydride (CBDA) derivative, and a realignment property diamine, wherein two or more aromatic rings in the realignment property diamine are connected by an ester group.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yeong Rong Park, Suk Hoon Kang, Mi Hwa Lee, Baek Kyun Jeon
  • Patent number: 10095066
    Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a compound represented by the general formula (I).
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 9, 2018
    Assignee: DIC CORPORATION
    Inventors: Martin Schadt, Sayaka Nose, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu
  • Patent number: 10082705
    Abstract: Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: September 25, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: SeungRyull Park, HyunJin Park, JinPil Kim, Han Jin Ahn, Hanseok Lee, Su-Bin Lee
  • Patent number: 10073297
    Abstract: A liquid crystal display includes a liquid crystal display panel having a first substrate and a second substrate. An upper polarizer is disposed on an outer surface of the first substrate. A viewing angle control film is disposed on the upper polarizer. The viewing angle control film includes a polarizing layer having a transmission axis substantially parallel to a transmission axis of the upper polarizer and a phase retardation layer including a birefringence material having an optical axis with a poloidal angle of about 40 degrees to about 75 degrees.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Wook Do, Seon-Ah Cho
  • Patent number: 10047183
    Abstract: There are provided a photoreactive copolymer and an alignment layer comprising the same, and more particularly, to a photoreactive copolymer including a copolymer of two different kinds of monomers, and an alignment layer comprising the same. The photoreactive copolymer according to the present invention may have excellent liquid crystal alignment property and alignment speed, easily change an alignment direction depending on a polarization direction, and have excellent solubility to an organic solvent, such that the photoreactive copolymer may be used in various fields such as a liquid crystal device, and the like.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: August 14, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Eun Seok Park, Sung-Ho Chun, Dai Seung Choi
  • Patent number: 10015887
    Abstract: A method for manufacturing includes coating a substrate (22) with a matrix (28) containing a material to be patterned on the substrate. A pattern (42) is fixed in the matrix by directing an energy beam to impinge on the coated substrate so as to fix the pattern in the matrix without fully sintering the pattern. The matrix remaining on the substrate outside the fixed pattern is removed, and after removing the matrix, the material in the pattern is sintered.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: July 3, 2018
    Assignee: ORBOTECH LTD.
    Inventors: Michael Zenou, Marc Altman, Claudio Rottman, Zvi Kotler
  • Patent number: 10005920
    Abstract: To provide a photoalignable material that can yield a photoalignable film having a high optical uniformity and no alignment defect, and is excellent in sensitivity to allow photoalignment even with exposure in a short period of time, and a liquid crystal alignment film having a high alignment stability of a liquid crystal compound from the photoalignable material. A photoalignable polymer composition containing a specific photoalignable polymer and a specific polymer that is reactive with the photoalignable polymer is manufactured, and the photoalignable film is manufactured by applying the polymer composition onto a base material or the like, drying the applied composition thereon, and irradiating the dried composition with light. Furthermore, the liquid crystal alignment film is manufactured by allowing alignment of molecules of the liquid crystal compound in the photoalignment film.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: June 26, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Mayumi Tanabe, Nagahisa Miyagawa
  • Patent number: 10000701
    Abstract: There is provided a cured-film formation composition for providing an orientation material that has high photoreaction efficiency and excellent solvent resistance with adhesion durability, and that enables a polymerizable liquid crystal to be aligned even on a resin film in a highly sensitive manner. A cured-film formation composition including: (A) an acrylic polymer having a photo-aligning group; (B) a polymer having any one of a hydroxy group, a carboxy group, and an amino group on at least two terminals of a group bonded to a main chain; and (C) a cross-linking agent. An orientation material and a retardation material are obtained with the cured-film formation composition.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: June 19, 2018
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tadashi Hatanaka, Tomohisa Ishida, Shojiro Yukawa
  • Patent number: 9976088
    Abstract: A liquid crystal alignment agent of the present invention includes a polymer composition (A) synthesized by tetracarboxylic dianhydride compound (a) and diamine compound (b), and a solvent (B). The diamine compound (b) includes diamine (b-1) shown as following formula (I) and diamine (b-2): in formula (I), R1 represents a linear or branched alkyl of 1 to 6 carbons, a linear or branched hydroxyl alkyl of 1 to 6 carbons, an alkoxy of 1 to 6 carbons, an alkylthio of 1 to 6 carbons, a halogen atom, an amino group or a nitro group; R2 represents a methylene group, a divalent alkyl of 2 to 10 carbons, a divalent alkenyl of 2 to 7 carbons or a divalent alkynyl of 2 to 6 carbons; and a represents an integer of 0 to 3.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: May 22, 2018
    Assignee: CHI MEI CORPORATION
    Inventor: Shin-Rong Chiou
  • Patent number: 9977163
    Abstract: An orientation layer is provided for an optically anisotropic film disposed between a substrate and an optically anisotropic film. The orientation layer has an orientation regulating force vertically orienting a liquid crystal compound without being subjected to orienting treatment.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: May 22, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tadahiro Kobayashi
  • Patent number: 9963418
    Abstract: Provided is a purification method of a photoreactive compound, and a photoreactive compound. According to the purification method of the present invention, a light and heat-sensitive photoreactive compound may be purified in high purity, thereby polymerizing a photoreactive polymer having improved physical properties.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 8, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Dai Seung Choi, Sung-Ho Chun
  • Patent number: 9880683
    Abstract: A touch panel, including a phase retardation film; a wire grid polarizer on the phase retardation film; and a touch sensor unit on the phase retardation film, the touch sensor unit being adjacent to the wire grid polarizer.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo-Han Bae, Jin Hwan Kim
  • Patent number: 9791743
    Abstract: A liquid-crystal photo-alignment layer that is composed of polymer stabilized azo dyes is provided, where a polymer network is introduced in the photo-alignment layer for stabilization. The photo-alignment layer is realized based on a two-step irradiation to first achieve molecule alignment to form the photo-alignment layer and then stabilize this layer. To realize the photo-alignment layer, a pre-determined surface of the substrate is first coated with a film of mixture. The mixture comprises an azo dye and a monomer preferably mixed in an optimal concentration of 0.67 wt/wt. The azo dye and the monomer have light-absorption peaks at different wavelengths such that photo-alignment of the azo-dye molecules and stabilization of the photo-alignment layer by polymerization of the monomer are achievable by two separate exposures of light to the film.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 17, 2017
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Qi Guo, Abhishek Kumar Srivastava, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • Patent number: 9766501
    Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 19, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: SeungRyull Park, HyunJin Park, JinPil Kim, Han Jin Ahn, Hanseok Lee, Su-Bin Lee
  • Patent number: 9720286
    Abstract: A liquid crystal display device and a method for manufacturing the same are disclosed. In an embodiment of the present invention, a liquid crystal display device and a method of manufacturing the liquid crystal display device includes a first substrate that has a first electrode formed thereon, a second substrate that faces the first substrate, a liquid crystal layer that is formed between the first substrate and the second substrate, and a first alignment layer that is formed on the first substrate and is in contact with the liquid crystal layer. Here, the first alignment layer includes a first alignment base layer that is photoaligned, and a first alignment controlling layer that is extended from the inside of the first alignment base layer.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jae-Hoon Kim
  • Patent number: 9723769
    Abstract: An alignment film includes a first pre-tilt functional group, a second pre-tilt functional group and a first vertical alignment functional group, which are linked to polysiloxane on a substrate. The first vertical alignment functional group includes a cyclic compound and is aligned substantially perpendicularly to the substrate. The first pre-tilt functional group is cross-linked to the second pre-tilt functional group and tilted with respect to the substrate.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taek-Joon Lee, Keun-Chan Oh, Jun-Hyup Lee, Sang-Gyun Kim, Jang-Hyun Kim, Tae-Hoon Kim
  • Patent number: 9715146
    Abstract: An IPS system liquid crystal display device is provided to prevent reliability for a seal portion from lowering, which is caused by the fact that an overcoat film at a portion where an alignment film is not present is deteriorated by ultraviolet light during optical alignment process. An alignment film 113 subjected to optical alignment is formed above each surface of a TFT substrate 100 and of a counter substrate 200, the alignment film 113 on the side of the TFT substrate 100 is not formed in the seal portion, and a sealant 150 is bonded to an inorganic insulating film 109. On the side of the counter substrate 200, the alignment film 113 is formed on an overcoat film 203 and the sealant 150 is bonded to the alignment film 113.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: July 25, 2017
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., LTD
    Inventors: Hidehiro Sonoda, Noboru Kunimatsu, Chikae Matsui, Takashi Yamamoto
  • Patent number: 9644071
    Abstract: Bis(azo-benzene) diamine monomers and a method of synthesizing the monomers are provided. The bis(azo-benzene) diamine monomers, in combination with amine reactive monomers, form polymers, such as polyimides and copolyimides, having photomechanical and thermomechanical properties.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: May 9, 2017
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Loon-Seng Tan, David Huabin Wang, Jeong Jae Wie, Timothy J. White
  • Patent number: 9575232
    Abstract: Provided is a method capable of producing an optically anisotropic laminated body in which defects are hardly generated so that light leakage is scarcely caused. This method is a method for producing an optically anisotropic laminated body including a substrate, an oriented film, and an optically anisotropic film, and has steps of: applying, to a surface of the substrate, an oriented-film-forming composition including an oriented-film-forming material and a solvent and having a viscosity of 4 mPa·s or less at 25° C., and drying the resultant to form the oriented film; and then applying, onto the resultant oriented film, an optically-anisotropic-layer-forming composition including a polymerizable liquid crystal compound, and drying the resultant to orient the polymerizable liquid crystal compound vertically to the surface of the substrate to form the optically anisotropic film.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 21, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tadahiro Kobayashi
  • Patent number: 9453951
    Abstract: The present invention provides a retardation film web having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A retardation film web of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle ? which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°???52°??(I) R450/R550<1??(II).
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 27, 2016
    Assignees: NITTO DENKO CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takashi Shimizu, Kazuki Uwada, Tadashi Kojima, Nao Murakami, Tomohiko Tanaka, Shingo Namiki
  • Patent number: 9417369
    Abstract: The present invention provides a retardation film web having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A retardation film web of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle ? which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°???52°??(I) R450/R550<1??(II).
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 16, 2016
    Assignees: NITTO DENKO CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takashi Shimizu, Kazuki Uwada, Tadashi Kojima, Nao Murakami, Tomohiko Tanaka, Shingo Namiki
  • Patent number: 9366906
    Abstract: The present invention relates to photoreactive compounds that are particularly useful in materials for the alignment of liquid crystals.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: June 14, 2016
    Assignee: ROLIC AG
    Inventors: Frederic Lincker, Izabela Bury S. Pires, Sabrina Chappellet, Patricia Scandiucci De Freitas, Mohammed Ibn-Elhaj, Qian Tang, Satish Palika, Masato Hoshino, Jean-Francois Eckert
  • Patent number: 9360709
    Abstract: A TFT substrate and a counter substrate are bonded via a seal material. Alignment films are applied to entire surfaces of the TFT substrate and the counter substrate so as to realize even thickness of the alignment film. This allows a display region to be formed up to the area around the seal material. The alignment film is photo-alignment processed. An organic film formed of the material which is not photo-aligned is interposed between the alignment film and the seal material. High bonding strength between the organic film and the seal material improves reliability of a seal portion as well as reduces a frame region.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 7, 2016
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yasushi Tomioka, Hidehiro Sonoda, Yosuke Hyodo, Yasuo Imanishi
  • Patent number: 9348077
    Abstract: A method of manufacturing a patterned retarder includes forming a retarder material layer by applying a retarder material to a substrate; drying the retarder material layer at a first temperature; exposing the retarder material layer to linearly-polarized UV, wherein the retarder material layer has an optical anisotropic property; and heat treating the retarder material layer at a second temperature higher than the first temperature to increase the optical anisotropic property of the retarder material layer.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: May 24, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Su-Bin Lee, Su-Hyun Park, Sang-Wook Lee, Jung-Min Lee, Byoung-Har Hwang
  • Patent number: 9329426
    Abstract: The present application relates to an optical device. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarization states. For example, the optical device can be used to realize a stereoscopic image.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 3, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Sin Young Kim, Moon Soo Park, Seung Hun Chae, Su Young Ryu, Da Mi Lee
  • Patent number: 9223163
    Abstract: Provided is a method of producing a film including: a coating step of coating, on a substrate, a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound, an alignment controlling agent capable of controlling alignment of the polymerizable liquid crystal compound, a polymerization initiator and coated film a solvent; and a drying step of drying, wherein the alignment controlling agent is a compound represented by formula (1) below, and the alignment controlling agent is added in 0.005 to 0.2 parts by mass relative to 100 parts by mass of the polymerizable liquid crystal compound: In general formula (1), each of L1 and L2 represents an alkylene group having 1 to 6 carbon atoms that may be substituted with a fluorine atom or the like, and n1 and n2 represents integers of 3 or more.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 29, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Majima, Kazuhiro Oki, Hirotoshi Andou