Patents by Inventor Yuko Teraoka
Yuko Teraoka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11053354Abstract: The present invention provides a liquid crystal display device with a high degree of freedom in molecular structure design of an alignment film and with reduced image sticking. The liquid crystal display device includes a pair of substrates; a liquid crystal layer held between the substrates; an alignment film disposed on a liquid crystal layer side surface of at least one of the substrates; and a polymer layer disposed between the liquid crystal layer and the alignment film, the alignment film containing a first polymer containing at least one structure represented by the following formula (1) in a side chain, wherein R1 represents a C3-C6 branched or cyclic alkylene group, and a hydrogen atom at a para position to a carbonyl group in the phenyl group is optionally replaced.Type: GrantFiled: July 1, 2019Date of Patent: July 6, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Yuko Teraoka, Tsuyoshi Okazaki
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Patent number: 10551678Abstract: A liquid crystal display device includes: a first polarizing plate; a first substrate; a first vertical alignment film; a liquid crystal layer; a second vertical alignment film; a second substrate; and a second polarizing plate, wherein a first retardation layer is disposed between the first polarizing plate and the liquid crystal layer and includes first and second areas having mutually different in-plane phase differences, a second retardation layer is disposed between the second polarizing plate and the liquid crystal layer and includes third and fourth areas having mutually different in-plane phase differences, the first and third areas overlap boundaries between at least four domains of liquid crystal molecules in a pixel region and have an in-plane phase difference in a predetermined range, and in-plane slow axes of the first and third areas and absorption axes of the first and second polarizing plates each have a predetermined azimuth.Type: GrantFiled: September 25, 2018Date of Patent: February 4, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Tsuyoshi Okazaki, Yuko Teraoka, Hiroshi Tsuchiya, Masanobu Mizusaki, Kiyoshi Minoura
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Publication number: 20200024399Abstract: The present invention provides a liquid crystal display device with a high degree of freedom in molecular structure design of an alignment film and with reduced image sticking. The liquid crystal display device includes a pair of substrates; a liquid crystal layer held between the substrates; an alignment film disposed on a liquid crystal layer side surface of at least one of the substrates; and a polymer layer disposed between the liquid crystal layer and the alignment film, the alignment film containing a first polymer containing at least one structure represented by the following formula (1) in a side chain, wherein R1 represents a C3-C6 branched or cyclic alkylene group, and a hydrogen atom at a para position to a carbonyl group in the phenyl group is optionally replaced.Type: ApplicationFiled: July 1, 2019Publication date: January 23, 2020Inventors: MASANOBU MIZUSAKI, YUKO TERAOKA, TSUYOSHI OKAZAKI
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Patent number: 10503021Abstract: A substrate provided with an alignment film includes: a substrate including an electrode on a surface thereof; and an alignment film in contact with the electrode. The alignment film contains a first polymer that contains a polysiloxane structure in a side chain and a second polymer that contains a photo-reactive group or a vertically aligning functional group. The alignment film includes a first surface that is placed on a side close to the electrode and contains the first polymer and a second surface that is placed on a side opposite to the first surface and contains the second polymer. The first polymer has a weight that is equal to or greater than a weight of the second polymer in the alignment film.Type: GrantFiled: January 16, 2019Date of Patent: December 10, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Tsuyoshi Okazaki, Yuko Teraoka
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Patent number: 10394083Abstract: The present invention aims to provide a liquid crystal display device in which image sticking and stains are sufficiently reduced. The present invention relates to an alignment film including: a polymer, wherein the polymer is a polysiloxane or a polyvinyl and contains a silsesquioxane group. The present invention also relates to a polymer for use in the alignment film, the polymer containing a silsesquioxane group. The present invention also relates to a liquid crystal display device including: the alignment film; a pair of substrates; and a liquid crystal layer disposed between the substrates, wherein the alignment film is disposed between at least one of the substrates and the liquid crystal layer.Type: GrantFiled: January 31, 2017Date of Patent: August 27, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Hiroshi Tsuchiya, Yuko Teraoka, Tsuyoshi Okazaki
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Publication number: 20190241807Abstract: Liquid crystal displays having quick response and high light resistance are provided. A liquid crystal composition includes: (A) a cyclohexane compound of formula [I]: wherein R and R? are each independently a C1-C6 linear alkyl group; (B) a compound that is different from cyclohexane compound (A) and is a liquid crystal; and (C) at least one polymerizable compound selected from the group consisting of a polymerizable compound of formula [II]: P1-Sp1-E-Sp2-P2??[II] wherein, e.g., P1 and P2 are each an acryloyloxy group, Sp1 and Sp2 are each an alkyleneoxy group or a direct bond, and E is an arylene group, and a polymerizable compound of formula [III]: A-(L-W)i-(M-Z)j—(N)k—B??[III] wherein, e.g.Type: ApplicationFiled: February 7, 2019Publication date: August 8, 2019Applicants: SHARP KABUSHIKI KAISHA, ORGANO SCIENCE CO., LTD., CHIRACOL CO., LTD.Inventors: Masanobu MIZUSAKI, Tsuyoshi OKAZAKI, Yuko TERAOKA, Kazuo OKAMOTO, Toshihiro SHIBATA
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Publication number: 20190227386Abstract: A substrate provided with an alignment film includes: a substrate including an electrode on a surface thereof; and an alignment film in contact with the electrode. The alignment film contains a first polymer that contains a polysiloxane structure in a side chain and a second polymer that contains a photo-reactive group or a vertically aligning functional group. The alignment film includes a first surface that is placed on a side close to the electrode and contains the first polymer and a second surface that is placed on a side opposite to the first surface and contains the second polymer. The first polymer has a weight that is equal to or greater than a weight of the second polymer in the alignment film.Type: ApplicationFiled: January 16, 2019Publication date: July 25, 2019Inventors: MASANOBU MIZUSAKI, TSUYOSHI OKAZAKI, YUKO TERAOKA
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Publication number: 20190179184Abstract: The present invention provides a liquid crystal display device and a method of producing the same in which the occurrence of a bright dot at an edge portion of a display region is suppressed during use in a wide temperature range. The liquid crystal display device of the present invention includes: a liquid crystal layer disposed between a first substrate and a second substrate; an alignment film disposed adjacent to the liquid crystal layer of at least one of the first substrate or the second substrate; and a sealing material to achieve adhesion between the first substrate and the second substrate, wherein the liquid crystal layer contains a liquid crystal material, the liquid crystal material contains an alkoxy group-containing liquid crystal compound and exhibits a liquid crystal phase at ?10° C. or higher and 80° C.Type: ApplicationFiled: August 3, 2017Publication date: June 13, 2019Inventors: TSUYOSHI OKAZAKI, MASANOBU MIZUSAKI, YUKO TERAOKA
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Publication number: 20190094592Abstract: A liquid crystal display device includes: a first polarizing plate; a first substrate; a first vertical alignment film; a liquid crystal layer; a second vertical alignment film; a second substrate; and a second polarizing plate, wherein a first retardation layer is disposed between the first polarizing plate and the liquid crystal layer and includes first and second areas having mutually different in-plane phase differences, a second retardation layer is disposed between the second polarizing plate and the liquid crystal layer and includes third and fourth areas having mutually different in-plane phase differences, the first and third areas overlap boundaries between at least four domains of liquid crystal molecules in a pixel region and have an in-plane phase difference in a predetermined range, and in-plane slow axes of the first and third areas and absorption axes of the first and second polarizing plates each have a predetermined azimuth.Type: ApplicationFiled: September 25, 2018Publication date: March 28, 2019Inventors: TSUYOSHI OKAZAKI, YUKO TERAOKA, HIROSHI TSUCHIYA, MASANOBU MIZUSAKI, KIYOSHI MINOURA
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Publication number: 20190049796Abstract: The present invention aims to provide a liquid crystal display device in which image sticking and stains are sufficiently reduced. The present invention relates to an alignment film including: a polymer, wherein the polymer is a polysiloxane or a polyvinyl and contains a silsesquioxane group. The present invention also relates to a polymer for use in the alignment film, the polymer containing a silsesquioxane group. The present invention also relates to a liquid crystal display device including: the alignment film; a pair of substrates; and a liquid crystal layer disposed between the substrates, wherein the alignment film is disposed between at least one of the substrates and the liquid crystal layer.Type: ApplicationFiled: January 31, 2017Publication date: February 14, 2019Inventors: MASANOBU MIZUSAKI, HIROSHI TSUCHIYA, YUKO TERAOKA, TSUYOSHI OKAZAKI
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Publication number: 20180329260Abstract: The present invention provides a liquid crystal display device which maintains a good voltage holding ratio for a long term and prevents an occurrence of image sticking and generation of stain on a display screen, by using a photo-alignment film. The liquid crystal display device according to the present invention includes a liquid crystal layer containing liquid crystal molecules and an antioxidant, a sealing material obtained by curing a sealing resin which contains a compound having at least one first bonding functional group which is selected from the group consisting of an epoxy group, a methoxy silane group, and an ethoxy silane group, and a photo-alignment film containing at least one alignment film polymer which includes an ester group.Type: ApplicationFiled: November 13, 2015Publication date: November 15, 2018Inventors: MASANOBU MIZUSAKI, YUKO TERAOKA
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Patent number: 10031370Abstract: A liquid crystal display device includes: a pair of substrates; a liquid crystal layer between the pair of substrates; and an alignment film between at least one of the pair of substrates and the liquid crystal layer, wherein the alignment film includes a first and second component, wherein the first component is a polymer in which at least two types of liquid crystal orientation side chains are bonded to a polysiloxane main chain, wherein the second component is made of at least one of a polyamic acid and a polyimide, wherein the at least two types of liquid crystal orientation side chains include a first side chain having on an end thereof a fluorine atom, and a second side chain that does not have on an end thereof a fluorine atom, wherein a proportion of the first component to a total amount of the second component is 2 mass % or greater, and wherein, in the liquid crystal display device, liquid crystal is sealed between the pair of substrates by a One Drop Fill scheme.Type: GrantFiled: August 1, 2014Date of Patent: July 24, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Yuko Teraoka, Hiroyuki Hakoi, Masanobu Mizusaki
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Patent number: 9864236Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: GrantFiled: May 3, 2017Date of Patent: January 9, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Isamu Miyake, Koichi Miyachi, Yuko Teraoka
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Publication number: 20170235192Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: ApplicationFiled: May 3, 2017Publication date: August 17, 2017Inventors: Isamu MIYAKE, Koichi MIYACHI, Yuko TERAOKA
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Patent number: 9671650Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: GrantFiled: June 10, 2016Date of Patent: June 6, 2017Assignee: Sharp Kabushiki KaishaInventors: Isamu Miyake, Koichi Miyachi, Yuko Teraoka
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Publication number: 20160282678Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: ApplicationFiled: June 10, 2016Publication date: September 29, 2016Inventors: Isamu MIYAKE, Koichi MIYACHI, Yuko TERAOKA
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Patent number: 9405153Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: GrantFiled: August 1, 2012Date of Patent: August 2, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Isamu Miyake, Koichi Miyachi, Yuko Teraoka
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Publication number: 20160187729Abstract: A liquid crystal display device includes: a pair of substrates; a liquid crystal layer between the pair of substrates; and an alignment film between at least one of the pair of substrates and the liquid crystal layer, wherein the alignment film includes a first and second component, wherein the first component is a polymer in which at least two types of liquid crystal orientation side chains are bonded to a polysiloxane main chain, wherein the second component is made of at least one of a polyamic acid and a polyimide, wherein the at least two types of liquid crystal orientation side chains include a first side chain having on an end thereof a fluorine atom, and a second side chain that does not have on an end thereof a fluorine atom, wherein a proportion of the first component to a total amount of the second component is 2 mass % or greater, and wherein, in the liquid crystal display device, liquid crystal is sealed between the pair of substrates by a One Drop Fill scheme.Type: ApplicationFiled: August 1, 2014Publication date: June 30, 2016Applicant: Sharp Kabushiki KaishaInventors: Yuko TERAOKA, Hiroyuki HAKOI, Masanobu MIZUSAKI
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Publication number: 20140213137Abstract: The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.Type: ApplicationFiled: August 1, 2012Publication date: July 31, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Isamu Miyake, Koichi Miyachi, Yuko Teraoka
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Patent number: 8576362Abstract: A liquid crystal display device suppresses generation of image sticking in AC mode. A liquid crystal display device comprises an alignment film arranged on at least one of a pair of substrates. The alignment film comprises a polymer containing a first constitutional unit and a second constitutional unit. The first constitutional unit controls alignment of the liquid crystal molecules by photoirradiation. The second constitutional unit controls alignment of the liquid crystal molecules regardless of photoirradiation.Type: GrantFiled: October 9, 2012Date of Patent: November 5, 2013Assignee: Sharp Kabushiki KaishaInventors: Shinichi Terashita, Isamu Miyake, Koichi Miyachi, Yuko Teraoka