Alignment Layer Of Specified Composition Patents (Class 428/1.2)
  • 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: 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: 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: 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: 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: 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: 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
  • Patent number: 9212806
    Abstract: Luminance adjustment films that include at least one microcapsule containing at least one photoisomerizable compound which selectively decreases luminance of visible light in reaction to ultraviolet light having an intensity distribution which reflects a luminance distribution of the visible light are described.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 15, 2015
    Assignee: Empire Technology Development LLC
    Inventor: Masahiro Ueda
  • Patent number: 9193861
    Abstract: There is provided a material that exhibits high solvent resistance after the formation of a cured film, excellent photo-alignment capability relative to a polymerizable liquid crystal, satisfactory heat resistance, and high transparency and moreover, that can be dissolved in a glycol-based solvent, a ketone-based solvent, or a lactic acid ester-based solvent that is applicable to the production of an overcoating of a color filter, during the formation of the cured film. A composition for forming thermoset film having photo-alignment properties and containing a component (A) that is a compound having a photo-aligning group and a hydroxy group, a component (B) that is a melamine formaldehyde resin, and a component (C) that is a crosslinker.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: November 24, 2015
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tadashi Hatanaka, Mitsumasa Kondo
  • Patent number: 9157029
    Abstract: The present application relates to a liquid crystal composition, a liquid crystal cell, a liquid crystal film, and methods of preparing the same. As an exemplary liquid crystal composition, according to the present application can provide a liquid crystal layer aligned without a special alignment layer. According to the liquid crystal composition, all of the liquid crystal cell, in which the liquid crystal layer is maintained in a non-polymerized state, and the liquid crystal film prepared by polymerizing the liquid crystal layer can be provided.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: October 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sin Young Kim, Moon Soo Park, Dae Hee Lee, Da Mi Lee
  • Patent number: 9157028
    Abstract: The present application relates to a liquid crystal composition, a liquid crystal cell, a liquid crystal film, and methods of preparing the same. As an exemplary liquid crystal composition, according to the present application can provide a liquid crystal layer aligned without a special alignment layer. According to the liquid crystal composition, all of the liquid crystal cell, in which the liquid crystal layer is maintained in a non-polymerized state, and the liquid crystal film prepared by polymerizing the liquid crystal layer can be provided.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: October 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sin Young Kim, Moon Soo Park, Dae Hee Lee, Da Mi Lee
  • Patent number: 9151988
    Abstract: Disclosed herein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: October 6, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai-Seung Choi, Sung-Kyoung Lee
  • Patent number: 9151989
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same. and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 6, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dai-Seung Choi, Heon Kim, Sung-Ho Chun, Sung-Joon Oh, Dong-Woo Yoo, Yu-Chan Kang
  • Patent number: 9080100
    Abstract: To provide a polymerizable liquid crystal composition showing good coating properties even when a support substrate has a low solvent resistance, and having uniform alignment properties. A polymerizable liquid crystal composition is prepared by containing as components an acrylate polymerizable liquid crystal compound, a compound represented by formula (3), and a non-liquid crystalline compound having an acryloyl group or a methacryloyl group as a reactive moiety, and having a functional group including a hydroxyl group as a reactive dilution solvent in one molecule. When the polymerizable liquid crystal composition is applied onto the support substrate, dried and irradiated with light, the polymerizable liquid crystal composition showing good coating properties even when the support substrate has the low solvent resistance, and having the uniform alignment properties can be obtained.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: July 14, 2015
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Yoshiharu Hirai
  • Patent number: 9046723
    Abstract: A liquid crystal display and a manufacturing method are provided. A liquid crystal display according to an exemplary embodiment of the present invention includes: a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate, and including liquid crystal molecules; a first electrode positioned on the first substrate; an insulating layer positioned on the first electrode; a second electrode positioned on the insulating layer; and a third electrode positioned on the second substrate, wherein the second electrode includes a plurality of branches and a slit between neighboring ones of the branches, and a width of the slit is more than about two times to less than about five times a width of its corresponding branches.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Ho Hong, Oh Jeong Kwon, Hyeok Jin Lee
  • Publication number: 20150131031
    Abstract: A compensation film includes: a first retardation layer including a polymer; a second retardation layer including a liquid crystal having positive birefringence; and a compensation layer including a liquid crystal having a vertical alignment property, where an angle between slow axes of the first and second retardation layers is in a range of about 85 to about 95 degrees, an entire in-plane retardation (Re0) of the first retardation layer, the second retardation layer and the compensation layer for wavelengths of 450 nm, 550 nm and 650 nm satisfy the following inequation: Re0(450 nm)<Re0(550 nm)<Re0(650 nm), an in-plane retardation (Re3) of the compensation layer for the incident light having a wavelength of about 550 nm is in a range of about zero to about 50 nm, and a thickness direction retardation (Rth3) of the compensation layer for the incident light is less than zero.
    Type: Application
    Filed: March 13, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung Jun KIM, Sang ah Gam, Myung Sup JUNG, Hyun-Seok CHOI
  • Publication number: 20150131032
    Abstract: A compensation film includes a first retardation layer including a polymer having negative birefringence, and a second retardation layer including a liquid crystal having positive birefringence, where the first retardation layer has an in-plane retardation (Re1) of 320 nm to 1050 nm for incident light having wavelength of 550 nm, the second retardation layer has an in-plane retardation (Re2) of 180 nm to 910 nm for the incident light, an entire in-plane retardation (Re0) of the first and second retardation layers for the incident light is a difference between the in-plane retardations of the first and second retardation layers, an angle between slow axes of the first and second retardation layers is 85 to 95 degrees, and the entire in-plane retardation (Re0) of the first and second retardation layers for the wavelength of 450 nm, 550 nm and 650 nm satisfies Re0 (450 nm)<Re0 (550 nm)<Re0 (650 nm).
    Type: Application
    Filed: April 8, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung Jun KIM, Sang ah GAM, Myung Sup JUNG, Hyun-Seok CHOI
  • Patent number: 9028926
    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: October 23, 2013
    Date of Patent: May 12, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu