Patents by Inventor Hiroaki Asagi

Hiroaki Asagi 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).

  • Patent number: 11128043
    Abstract: A liquid crystal cell including multiple antenna units includes a TFT board that includes a first dielectric substrate, TFTs on the first dielectric substrate, and patch electrodes electrically connected to the TFTs, a slot board that includes a second dielectric substrate and a slot electrode having slots on the second dielectric substrate, a conductive alignment film having conductivity on at least one of the patch electrodes and the slot electrode, and a liquid crystal layer disposed between the TFT board and the slot board with the patch electrodes and the slot electrode facing each other. The liquid crystal layer includes liquid crystal molecules that are horizontally aligned with respect to the TFT board and the slot board while no voltage is being applied across the patch electrodes and the slot electrode.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: September 21, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroaki Asagi, Isamu Miyake
  • Patent number: 11128044
    Abstract: A scanning antenna 1000 according to the present invention is a scanning antenna 1000 in which antenna units U are arranged, and includes a thin film transistor (TFT) substrate 101 that includes a first dielectric substrate 1, TFTs 10 and patch electrodes 15 supported by the first dielectric substrate 1, and a first alignment film M1 disposed so as to cover the patch electrodes 15 and other elements, a slot substrate 201 that includes a second dielectric substrate 51, a slot electrode 55 supported by the second dielectric substrate 51 and including slots 57, and a second alignment film M2 disposed so as to cover the slot electrode 55, a liquid crystal layer LC that is interposed between the TFT substrate 101 and the slot substrate 201 of which the alignment films M1 and M2 face each other, and a reflective conductive plate 65 that is disposed so as to face an opposite surface 51b of the second dielectric substrate 51 with a dielectric layer 54 interposed therebetween.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 21, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroaki Asagi, Isamu Miyake
  • Patent number: 10795210
    Abstract: A liquid crystal panel includes substrates, a liquid crystal layer between the substrates, a spacer provided on an opposite surface of one of the substrates, and an alignment film provided on an opposite surface of another substrate. The display surface is curved around a curved axis or formed to be bendable around the curved axis, and the spacer directly or indirectly abuts on the alignment film provided on the opposite surface of the other substrate. The alignment film is a horizontal alignment film that contains a polymer having an alkylene chain structure having two or more carbon atoms in a main chain and allows liquid crystal molecules in the liquid crystal layer to be aligned horizontally to the alignment film, and in the alignment film provided on the opposite surface of the other substrate, the polymer is aligned such that the alkylene chain structure extends parallel to the curved axis.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: October 6, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hiroaki Asagi
  • Publication number: 20200310199
    Abstract: A liquid crystal display device of the present invention includes a thin-film transistor substrate, a counter substrate facing the thin-film transistor substrate, a liquid crystal layer provided between the thin-film transistor substrate and the counter substrate, an alignment film provided on the thin-film transistor substrate; a sealing material which bonds together the thin-film transistor substrate and the counter substrate at the periphery of the liquid crystal layer, and a polymerized layer provided on the liquid crystal layer-side surface of the alignment film. The alignment film contains a first polymer and a second polymer of a different type from that of the first polymer and is chemically bonded to the sealing material, the first polymer and the second polymer contained in the alignment film are mixed in a surface layer in contact with the liquid crystal layer, and the first polymer and the second polymer have different photo-functional groups.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Inventor: HIROAKI ASAGI
  • Patent number: 10756430
    Abstract: A liquid crystal cell in which antenna units are arrayed includes a TFT substrate, a slot substrate, an alignment film, and a liquid crystal layer. The TFT substrate includes a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes electrically connected to the TFTs. The slot substrate includes a second dielectric substrate and a slot electrode including slots supported by the second dielectric substrate. The alignment film is provided on a surface of at least either each of the patch electrodes or the slot electrode. The alignment film includes a metal oxide film at the foremost surface of the alignment film. The liquid crystal layer is sandwiched between the TFT substrate and the slot substrate and contains liquid crystal molecules that are aligned parallel to the TFT substrate and the slot substrate when no voltage is applied between the patch electrode and the slot electrode.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroaki Asagi, Isamu Miyake
  • Patent number: 10756440
    Abstract: A scanning antenna is a scanning antenna in which antenna units are arranged, including a TFT substrate provided with a first dielectric substrate, a TFT, a gate bus line, a source bus line, patch electrodes, and a first alignment film covering the patch electrodes; a slot substrate provided with a second dielectric substrate, a slot electrode, and a second alignment film covering the slot electrode; a liquid crystal layer provided between the TFT substrate and the slot substrate; and a reflective conductive plate. The slot electrode includes slots disposed corresponding to each of the patch electrodes. A sealing portion includes a main sealing portion that defines at least one injection port.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroaki Asagi, Isamu Miyake
  • Publication number: 20200103711
    Abstract: A liquid crystal panel includes substrates, a liquid crystal layer between the substrates, a spacer provided on an opposite surface of one of the substrates, and an alignment film provided on an opposite surface of another substrate. The display surface is curved around a curved axis or formed to be bendable around the curved axis, and the spacer directly or indirectly abuts on the alignment film provided on the opposite surface of the other substrate. The alignment film is a horizontal alignment film that contains a polymer having an alkylene chain structure having two or more carbon atoms in a main chain and allows liquid crystal molecules in the liquid crystal layer to be aligned horizontally to the alignment film, and in the alignment film provided on the opposite surface of the other substrate, the polymer is aligned such that the alkylene chain structure extends parallel to the curved axis.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 2, 2020
    Inventor: Hiroaki ASAGI
  • Publication number: 20200041849
    Abstract: The present invention provides a liquid crystal aligning agent for a TFT substrate, a liquid crystal display panel, and a method for fabricating a liquid crystal display panel, capable of preventing the decrease in panel yield caused by ink repelling. The liquid crystal aligning agent for a TFT substrate, containing a polymer and a solvent, wherein the liquid crystal aligning agent contains 10% by weight or more of diisobutyl ketone relative to a total weight, the TFT substrate includes a channel protection film, and the channel protection film includes an insulating film containing silicon and nitrogen.
    Type: Application
    Filed: October 2, 2017
    Publication date: February 6, 2020
    Inventors: Hiroaki ASAGI, Isamu MIYAKE
  • Publication number: 20190265524
    Abstract: A scanning antenna 1000 according to the present invention is a scanning antenna 1000 in which antenna units U are arranged, and includes a thin film transistor (TFT) substrate 101 that includes a first dielectric substrate 1, TFTs 10 and patch electrodes 15 supported by the first dielectric substrate 1, and a first alignment film M1 disposed so as to cover the patch electrodes 15 and other elements, a slot substrate 201 that includes a second dielectric substrate 51, a slot electrode 55 supported by the second dielectric substrate 51 and including slots 57, and a second alignment film M2 disposed so as to cover the slot electrode 55, a liquid crystal layer LC that is interposed between the TFT substrate 101 and the slot substrate 201 of which the alignment films M1 and M2 face each other, and a reflective conductive plate 65 that is disposed so as to face an opposite surface 51b of the second dielectric substrate 51 with a dielectric layer 54 interposed therebetween.
    Type: Application
    Filed: July 11, 2017
    Publication date: August 29, 2019
    Inventors: HIROAKI ASAGI, ISAMU MIYAKE
  • Publication number: 20190237870
    Abstract: A liquid crystal cell in which antenna units are arrayed includes a TFT substrate, a slot substrate, an alignment film, and a liquid crystal layer. The TFT substrate includes a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes electrically connected to the TFTs. The slot substrate includes a second dielectric substrate and a slot electrode including slots supported by the second dielectric substrate. The alignment film is provided on a surface of at least either each of the patch electrodes or the slot electrode. The alignment film includes a metal oxide film at the foremost surface of the alignment film. The liquid crystal layer is sandwiched between the TFT substrate and the slot substrate and contains liquid crystal molecules that are aligned parallel to the TFT substrate and the slot substrate when no voltage is applied between the patch electrode and the slot electrode.
    Type: Application
    Filed: January 23, 2019
    Publication date: August 1, 2019
    Inventors: HIROAKI ASAGI, ISAMU MIYAKE
  • Publication number: 20190229431
    Abstract: A scanning antenna is a scanning antenna in which antenna units are arranged, including a TFT substrate provided with a first dielectric substrate, a TFT, a gate bus line, a source bus line, patch electrodes, and a first alignment film covering the patch electrodes; a slot substrate provided with a second dielectric substrate, a slot electrode, and a second alignment film covering the slot electrode; a liquid crystal layer provided between the TFT substrate and the slot substrate; and a reflective conductive plate. The slot electrode includes slots disposed corresponding to each of the patch electrodes. A sealing portion includes a main sealing portion that defines at least one injection port.
    Type: Application
    Filed: August 24, 2017
    Publication date: July 25, 2019
    Inventors: HIROAKI ASAGI, ISAMU MIYAKE
  • Publication number: 20190221933
    Abstract: A liquid crystal cell including multiple antenna units includes a TFT board that includes a first dielectric substrate, TFTs on the first dielectric substrate, and patch electrodes electrically connected to the TFTs, a slot board that includes a second dielectric substrate and a slot electrode having slots on the second dielectric substrate, a conductive alignment film having conductivity on at least one of the patch electrodes and the slot electrode, and a liquid crystal layer disposed between the TFT board and the slot board with the patch electrodes and the slot electrode facing each other. The liquid crystal layer includes liquid crystal molecules that are horizontally aligned with respect to the TFT board and the slot board while no voltage is being applied across the patch electrodes and the slot electrode.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 18, 2019
    Inventors: HIROAKI ASAGI, ISAMU MIYAKE
  • Publication number: 20190113792
    Abstract: A liquid crystal panel includes a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, a birefringent retardation layer provided on the liquid crystal layer side of at least one of the pair of substrates, and an alignment film provided in contact with the surface of the retardation layer. The retardation layer is formed of a first polymer material having a first photofunctional group, and the alignment film is formed of a second polymer material having a side-chain second photofunctional group. The first and second photofunctional groups are ones that undergo at least one photoreaction selected from the group consisting of isomerization, dimerization, and Fries rearrangement. The retardation layer further contains the second polymer material with its percentage increasing with the distance from the substrate, and the alignment film further contains the first polymer material with its percentage decreasing with the distance from the substrate.
    Type: Application
    Filed: March 28, 2017
    Publication date: April 18, 2019
    Inventors: HIROAKI ASAGI, ISAMU MIYAKE
  • Patent number: 9977290
    Abstract: The present invention provides a method for manufacturing a liquid crystal display device including a photo-alignment film and capable of sufficiently improving the display quality. The method for manufacturing a liquid crystal display device of the present invention is a method for manufacturing a liquid crystal display device including a photo-alignment film.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 22, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Isamu Miyake, Koichi Miyachi, Hiroaki Asagi
  • Publication number: 20170355853
    Abstract: The present invention provides a method for manufacturing a liquid crystal display device which requires a reduced light irradiation dose in the alignment treatment for a photo-alignment film and achieves a favorable contrast ratio and a viewing angle property. The method for manufacturing a liquid crystal display device includes, in the following order, the steps of: (1) forming on a substrate a film of a photo-alignment film material containing two or more polymers and a solvent; (2) pre-baking the film to evaporate the solvent; (3) post-baking the pre-baked film gradually at multiple temperatures from a low temperature to a high temperature; and (4) irradiating the post-baked film with polarized light, at least one of the two or more polymers being a photo-reactive polymer containing a photo-functional group in a side chain.
    Type: Application
    Filed: November 26, 2015
    Publication date: December 14, 2017
    Inventors: Hiroaki ASAGI, Isamu MIYAKE, Yuichi KAWAHIRA
  • Patent number: 9810950
    Abstract: The present invention provides a method for producing a liquid crystal display device which can produce a liquid crystal display device with favorable voltage holding ratio reliability and reduced image sticking.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: November 7, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroaki Asagi, Isamu Miyake, Akira Hirai
  • Patent number: 9733524
    Abstract: A liquid crystal display device (100) includes a first substrate (10) and a second substrate (20) opposing each other, and a liquid crystal layer (30) provided between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a horizontal alignment film (12, 22) provided on a side closer to the liquid crystal layer. The liquid crystal display device further includes an alignment sustaining layer (40a, 40b) provided between the horizontal alignment film and the liquid crystal layer, the alignment sustaining layer containing a polymerization product of a photopolymerizable compound. The photopolymerizable compound contains an acrylate group or a methacrylate group. The polymerization product in the alignment sustaining layer contains an acrylate group or a methacrylate group as a residue. The horizontal alignment film contains an acrylate group or a methacrylate group.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: August 15, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Isamu Miyake, Koichi Miyachi, Hiroaki Asagi, Akira Hirai
  • Publication number: 20170212393
    Abstract: The present invention provides a method for producing a liquid crystal display device which can produce a liquid crystal display device with favorable voltage holding ratio reliability and reduced image sticking.
    Type: Application
    Filed: July 23, 2015
    Publication date: July 27, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiroaki ASAGI, Isamu MIYAKE, Akira HIRAI
  • Publication number: 20170212389
    Abstract: The present invention provides a liquid crystal display device that can maintain favorable contrast characteristics for a long period of time using a photo-alignment film. The liquid crystal display device includes in the following order from a back surface side: a backlight that emits light including visible light; a linear polarizer; a first substrate; an alignment film; a liquid crystal layer that contains liquid crystal molecules; and a second substrate, the alignment film containing a material with an azobenzene structure that exhibits anisotropic absorption of visible light and isomerizes upon absorption of visible light, the linear polarizer having a polarized light transmission axis that intersects a direction in which the alignment film has larger absorption anisotropy.
    Type: Application
    Filed: July 24, 2015
    Publication date: July 27, 2017
    Inventors: Hiroaki ASAGI, Isamu MIYAKE
  • Patent number: 9488869
    Abstract: The present invention provides a liquid crystal display device that sufficiently reduces image sticking, by forming a polymer layer with stable alignment control appropriately. In a method for manufacturing the liquid crystal display device of the present invention, base film forming conditions are different between the step of forming a base film on a substrate including an active element and the step of forming a base film on a substrate different from the substrate including an active element.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 8, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Hirai, Hiroaki Asagi, Isamu Miyake