Patents by Inventor Shinji Sekiguchi
Shinji Sekiguchi 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: 11332578Abstract: The present invention is directed to a polyimide resin comprising a structural unit A derived from a tetracarboxylic dianhydride and a structural unit B derived from a diamine, wherein the structural unit A contains a structural unit (A-1) derived from 4,4?-(hexafluoroisopropylidene)diphthalic anhydride, and the structural unit B contains a structural unit derived from an aliphatic diamine, a polyimide resin composition comprising the polyimide resin and inorganic nanoparticles, and a polyimide film comprising the polyimide resin or the polyimide resin composition. Provided are a polyimide resin and a polyimide resin composition, each of which can form a film having not only a heat resistance, and colorlessness and transparency but also low water absorption properties, and a polyimide film.Type: GrantFiled: May 1, 2017Date of Patent: May 17, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei Abiko, Shuya Suenaga, Shinji Sekiguchi
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Patent number: 11261303Abstract: A method for producing a polyimide resin film, including: a coating step of forming a coated film by coating a polyimide resin composition containing a polyimide resin, an antioxidant, and a solvent on a substrate; and a drying step of drying the coated film in air at 180° C. or more, the antioxidant being a phenol-based antioxidant, and a content of the phenol-based antioxidant being 0.05 part by mass or more per 100 parts by mass of the polyimide resin.Type: GrantFiled: July 19, 2017Date of Patent: March 1, 2022Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Aoi Daito, Shinji Sekiguchi
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Publication number: 20210395568Abstract: A polyimide resin includes structural unit A derived from tetracarboxylic dianhydride and structural unit B derived from diamine, wherein unit A includes at least one unit selected from the group consisting of unit (A-1) derived from a compound represented by Formula (a-1) and unit (A-2) derived from a compound represented by Formula (a-2), and unit B includes unit (B-1) derived from a compound represented by Formula (b-1) and includes unit (B-2) derived from a compound represented by Formula (b-2). wherein X represents a single bond or an oxygen atom, and Ar represents a substituted or unsubstituted arylene group. wherein Z1/Z2 represent a divalent aliphatic or aromatic group, R1/R2 represent a monovalent aromatic or aliphatic group, R3/R4 represent a monovalent aliphatic group, R5/R6 represent a monovalent aliphatic or aromatic group, m&n represent an integer of 1 or greater, and a sum of m+n represents an integer from 2-1000.Type: ApplicationFiled: November 12, 2019Publication date: December 23, 2021Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei ABIKO, Aoi DAITO, Shinji SEKIGUCHI
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Patent number: 10954339Abstract: Provided is a polyimide resin composition and a production method thereof, wherein the polyimide resin composition contains an alicyclic polyimide resin having a structural unit represented by the following general formula (1) and inorganic particles of at least one selected from the group consisting of titanium dioxide, barium titanate, and zirconium oxide, wherein the alicyclic polyimide resin has a glass transition temperature of 260° C. or higher, wherein R1 represents a tetravalent alicyclic hydrocarbon group having a carbon number of from 4 to 22, and R2 represents a divalent aliphatic hydrocarbon group having a carbon number of from 2 to 28 and/or a divalent aromatic hydrocarbon group having a carbon number of from 6 to 27.Type: GrantFiled: March 31, 2017Date of Patent: March 23, 2021Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Kazuaki Mukasa, Yohei Abiko, Aoi Daito, Shinji Sekiguchi
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Patent number: 10920018Abstract: A polyimide resin including a structural unit A derived from a tetracarboxylic dianhydride and a structural unit B derived from a diamine compound, wherein the structural unit A includes a structural unit (A-1) derived from a compound represented by the following formula (a-1), and the structural unit B includes a structural unit (B-1) derived from a compound represented by the following formula (b-1): wherein m and n in the formula (b-1) each independently are an integer of 0 or 1.Type: GrantFiled: April 21, 2017Date of Patent: February 16, 2021Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei Abiko, Saeko Sato, Aoi Daito, Shinji Sekiguchi
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Publication number: 20200055987Abstract: A polyimide resin including a structural unit A derived from a tetracarboxylic dianhydride and a structural unit B derived from a diamine compound, wherein the structural unit A includes a structural unit (A-1) derived from a compound represented by the following formula (a-1), and the structural unit B includes a structural unit (B-1) derived from a compound represented by the following formula (b-1): wherein m and n in the formula (b-1) each independently are an integer of 0 or 1.Type: ApplicationFiled: April 21, 2017Publication date: February 20, 2020Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei ABIKO, Saeko SATO, Aoi DAITO, Shinji SEKIGUCHI
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Publication number: 20200002477Abstract: Provided is a polyimide resin composition and a production method thereof, wherein the polyimide resin composition contains an alicyclic polyimide resin having a structural unit represented by the following general formula (1) and inorganic particles of at least one selected from the group consisting of titanium dioxide, barium titanate, and zirconium oxide, wherein the alicyclic polyimide resin has a glass transition temperature of 260° C. or higher, wherein R1 represents a tetravalent alicyclic hydrocarbon group having a carbon number of from 4 to 22, and R2 represents a divalent aliphatic hydrocarbon group having a carbon number of from 2 to 28 and/or a divalent aromatic hydrocarbon group having a carbon number of from 6 to 27.Type: ApplicationFiled: March 31, 2017Publication date: January 2, 2020Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Kazuaki MUKASA, Yohei ABIKO, Aoi DAITO, Shinji SEKIGUCHI
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Publication number: 20190202988Abstract: The present invention is directed to a polyimide resin comprising a structural unit A derived from a tetracarboxylic dianhydride and a structural unit B derived from a diamine, wherein the structural unit A contains a structural unit (A-1) derived from 4,4?-(hexafluoroisopropylidene)diphthalic anhydride, and the structural unit B contains a structural unit derived from an aliphatic diamine, a polyimide resin composition comprising the polyimide resin and inorganic nanoparticles, and a polyimide film comprising the polyimide resin or the polyimide resin composition. Provided are a polyimide resin and a polyimide resin composition, each of which can form a film having not only a heat resistance, and colorlessness and transparency but also low water absorption properties, and a polyimide film.Type: ApplicationFiled: May 1, 2017Publication date: July 4, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei ABIKO, Shuya SUENAGA, Shinji SEKIGUCHI
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Publication number: 20190185631Abstract: A method for producing a polyimide resin film, including: a coating step of forming a coated film by coating a polyimide resin composition containing a polyimide resin, an antioxidant, and a solvent on a substrate; and a drying step of drying the coated film in air at 180° C. or more, the antioxidant being a phenol-based antioxidant, and a content of the phenol-based antioxidant being 0.05 part by mass or more per 100 parts by mass of the polyimide resin.Type: ApplicationFiled: July 19, 2017Publication date: June 20, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Aoi DAITO, Shinji SEKIGUCHI
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Publication number: 20190161581Abstract: A polyimide resin including a structural unit A derived from a tetracarboxylic dianhydride and a structural unit B derived from a diamine compound, wherein the structural unit A includes at least one of a structural unit (A-1) derived from a compound represented by the following formula (a-1), a structural unit (A-2) derived from a compound represented by the following formula (a-2), and a structural unit (A-3) derived from a compound represented by the following formula (a-3), the structural unit B comprises a structural unit (B-1) derived from a compound represented by the following formula (b-1), a proportion of the structural unit (B-1) in the structural unit B is 60 mol % or more, and the polyimide resin has a glass transition temperature of higher than 410° C.: wherein X and Y in the formula (b-1) each independently are a hydrogen atom, a methyl group, a chlorine atom, or a fluorine atom.Type: ApplicationFiled: May 1, 2017Publication date: May 30, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yohei ABIKO, Shuya SUENAGA, Shinji SEKIGUCHI
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Patent number: 10282007Abstract: A touch panel includes plural scanning electrodes, plural detection electrodes that are formed to intersect with the plural scanning electrodes, one or a plurality of layers being disposed between the plural detection electrodes and the plural scanning electrodes, plural holes that are arrayed apart from each other on each of the plural detection electrodes, and shaped into polygons each shaped to have five or more corners in a plan view, and plural dummy electrodes that are formed between the respective adjacent detection electrodes, made of the same material as that of the detection electrode, and electrically isolated from each other, in which the plural dummy electrodes are shaped into the polygons in a plan view.Type: GrantFiled: July 14, 2017Date of Patent: May 7, 2019Assignee: Japan Display Inc.Inventor: Shinji Sekiguchi
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Publication number: 20170315647Abstract: A touch panel includes plural scanning electrodes, plural detection electrodes that are formed to intersect with the plural scanning electrodes, one or a plurality of layers being disposed between the plural detection electrodes and the plural scanning electrodes, plural holes that are arrayed apart from each other on each of the plural detection electrodes, and shaped into polygons each shaped to have five or more corners in a plan view, and plural dummy electrodes that are formed between the respective adjacent detection electrodes, made of the same material as that of the detection electrode, and electrically isolated from each other, in which the plural dummy electrodes are shaped into the polygons in a plan view.Type: ApplicationFiled: July 14, 2017Publication date: November 2, 2017Inventor: Shinji SEKIGUCHI
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Patent number: 9791991Abstract: A display device with a built-in touch panel includes a first substrate, a second substrate, plural pixel electrodes provided between the first substrate and the second substrate, plural common electrodes provided between the first substrate and the second substrate, and plural detection electrodes provided on the first substrate. An image is displayed by, light control using an electric field generated between the plural pixel electrodes and the plural common electrodes. The presence or absence of touch is detected by a difference in capacitance due to the presence or absence of a material interrupting the electric field generated between one of the detection electrodes and one of the common electrodes. Each of the detection electrodes includes a through hole.Type: GrantFiled: March 14, 2016Date of Patent: October 17, 2017Assignee: Japan Display Inc.Inventors: Takahiro Miyazaki, Masanari Saitou, Koji Nagata, Shinji Sekiguchi, Tomohiko Ootani
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Patent number: 9740322Abstract: A touch panel includes plural scanning electrodes, plural detection electrodes that are formed to intersect with the plural scanning electrodes, one or a plurality of layers being disposed between the plural detection electrodes and the plural scanning electrodes, plural holes that are arrayed apart from each other on each of the plural detection electrodes, and shaped into polygons each shaped to have five or more corners in a plan view, and plural dummy electrodes that are formed between the respective adjacent detection electrodes, made of the same material as that of the detection electrode, and electrically isolated from each other, in which the plural dummy electrodes are shaped into the polygons in a plan view.Type: GrantFiled: September 15, 2016Date of Patent: August 22, 2017Assignee: Japan Display Inc.Inventor: Shinji Sekiguchi
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Publication number: 20170003788Abstract: A touch panel includes plural scanning electrodes, plural detection electrodes that are formed to intersect with the plural scanning electrodes, one or a plurality of layers being disposed between the plural detection electrodes and the plural scanning electrodes, plural holes that are arrayed apart from each other on each of the plural detection electrodes, and shaped into polygons each shaped to have five or more corners in a plan view, and plural dummy electrodes that are formed between the respective adjacent detection electrodes, made of the same material as that of the detection electrode, and electrically isolated from each other, in which the plural dummy electrodes are shaped into the polygons in a plan view.Type: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Inventor: Shinji SEKIGUCHI
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Patent number: 9471166Abstract: A touch panel includes plural scanning electrodes, plural detection electrodes that are formed to intersect with the plural scanning electrodes, one or a plurality of layers being disposed between the plural detection electrodes and the plural scanning electrodes, plural holes that are arrayed apart from each other on each of the plural detection electrodes, and shaped into polygons each shaped to have five or more corners in a plan view, and plural dummy electrodes that are formed between the respective adjacent detection electrodes, made of the same material as that of the detection electrode, and electrically isolated from each other, in which the plural dummy electrodes are shaped into the polygons in a plan view.Type: GrantFiled: August 8, 2014Date of Patent: October 18, 2016Assignee: Japan Display Inc.Inventor: Shinji Sekiguchi
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Patent number: 9454250Abstract: A technique capable of reducing the number of leading lines and making the area of a frame region smaller is provided. A display device includes an in-cell touch panel in which a pair of transparent substrates is arranged so as to oppose each other, a plurality of scanning electrodes are disposed on an opposing surface of one of the transparent substrates, and detection electrodes that intersect with the scanning electrodes are arranged on an opposing surface of the other transparent substrate. The display device further includes at least one first leading lines electrically connected the scanning electrodes and configured to supply a scanning signal to the scanning electrodes, and at least one second leading lines electrically connected to the detection electrodes and configured to output a signal detected by the detection electrodes. In the display device, each of the first leading lines is connected to at least two of the scanning electrodes having different widths.Type: GrantFiled: October 23, 2014Date of Patent: September 27, 2016Assignee: Japan Display Inc.Inventors: Masanari Saitou, Takahiro Miyazaki, Koji Nagata, Shinji Sekiguchi, Tomohiko Ootani
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Publication number: 20160195962Abstract: A display device with a built-in touch panel includes a first substrate, a second substrate, plural pixel electrodes provided between the first substrate and the second substrate, plural common electrodes provided between the first substrate and the second substrate, and plural detection electrodes provided on the first substrate. An image is displayed by, light control using an electric field generated between the plural pixel electrodes and the plural common electrodes. The presence or absence of touch is detected by a difference in capacitance due to the presence or absence of a material interrupting the electric field generated between one of the detection electrodes and one of the common electrodes. Each of the detection electrodes includes a through hole.Type: ApplicationFiled: March 14, 2016Publication date: July 7, 2016Inventors: Takahiro MIYAZAKI, Masanari SAITOU, Koji NAGATA, Shinji SEKIGUCHI, Tomohiko OOTANI
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Patent number: 9317166Abstract: A display device with a built-in touch panel includes a first substrate, a second substrate, plural pixel electrodes provided between the first substrate and the second substrate, plural common electrodes provided between the first substrate and the second substrate, and plural detection electrodes provided on the first substrate. An image is displayed by light control using an electric field generated between the plural pixel electrodes and the plural common electrodes. The presence or absence of touch is detected by a difference in capacitance due to the presence or absence of a material interrupting the electric field generated between one of the detection electrodes and one of the common electrodes. Each of the detection electrodes includes a through hole.Type: GrantFiled: March 13, 2014Date of Patent: April 19, 2016Assignee: Japan Display Inc.Inventors: Takahiro Miyazaki, Masanari Saitou, Koji Nagata, Shinji Sekiguchi, Tomohiko Ootani
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Patent number: 9235304Abstract: Disclosed is a touch panel-equipped display device capable of suppressing an increase in the number of wires and improving detection resolution. A touch panel-equipped display device includes scanning lines and detection lines. The detection lines include first main detection lines, second main detection lines, first one-side sub-detection lines, and first other-side sub-detection lines. Each of the second main detection lines is arranged between adjacent first main detection lines. The first one-side sub-detection lines are connected together, and each first one-side sub-detection lines is arranged between the corresponding first main detection line and the second main detection line adjacent to one side of the corresponding first main detection line.Type: GrantFiled: November 5, 2013Date of Patent: January 12, 2016Assignee: JAPAN DISPLAY INC.Inventors: Masanari Saitou, Takahiro Miyazaki, Shinji Sekiguchi, Tomohiko Ootani