Patents by Inventor Yuko Katano

Yuko Katano 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).

  • Publication number: 20220119710
    Abstract: A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). For example, R1, R21, R22, R31, and R32 are alkyls having 1 to 12 carbon atoms; a ring A1 is 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 are single bonds; Z12, Z22, and Z32 are —C?C— or —C?C—C?C—; L13 to L16, L21 to L23, and L31 to L36 are hydrogen or fluorine; Y11 and Y12 are hydrogen or fluorine; and n1 is 0.
    Type: Application
    Filed: July 13, 2021
    Publication date: April 21, 2022
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Eiji OKABE, Takanori MORI, Yuko KATANO
  • Publication number: 20210214615
    Abstract: The liquid crystal display device of the disclosure has: a first substrate; a plurality of pixel electrodes formed on the first substrate; a second substrate; a counter electrode formed on the second substrate and facing the pixel electrode; a liquid crystal layer including a liquid crystal composition between the pixel electrode and the counter electrode; and an alignment control layer formed of a polymer containing an alignable monomer that is one component of the liquid crystal composition, in which the alignment control layers are each formed on a side of the first substrate and on a side of the second substrate. The alignable monomer is a polymerizable polar compound having a mesogen moiety formed of at least one ring, and a polar group.
    Type: Application
    Filed: August 3, 2017
    Publication date: July 15, 2021
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yuko KATANO, Fumitaka KONDO, Kazuhiro OGITA, Hiroshi ENDOU
  • Patent number: 10428275
    Abstract: A method for manufacturing a liquid crystal display device using a liquid crystal composition containing a polar compound having a polymerizable group. Upon manufacturing the liquid crystal display device including a pair of substrates that have no alignment film and arranged to face each other, and including a liquid crystal composition containing a liquid crystal compound and a polymerizable compound as a liquid crystal layer formed between the substrates formed of an electrode group formed on either one or both of surfaces faced by each of the pair of substrates, in which at least one of the polymerizable compounds is a compound having a polar anchor group, wherein the polymerizable compound is allowed to react under conditions of 10 or more in an accumulated light quantity ratio (313 nm/254 nm) at 254 nanometers and 313 nanometers to form an alignment control layer.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 1, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yuko Katano, Fumitaka Kondo, Kazuhiro Ogita, Hiroshi Endou
  • Publication number: 20190225887
    Abstract: A method for manufacturing a liquid crystal display device using a liquid crystal composition containing a polar compound having a polymerizable group. Upon manufacturing the liquid crystal display device including a pair of substrates that have no alignment film and arranged to face each other, and including a liquid crystal composition containing a liquid crystal compound and a polymerizable compound as a liquid crystal layer formed between the substrates formed of an electrode group formed on either one or both of surfaces faced by each of the pair of substrates, in which at least one of the polymerizable compounds is a compound having a polar anchor group, wherein the polymerizable compound is allowed to react under conditions of 10 or more in an accumulated light quantity ratio (313 nm/254 nm) at 254 nanometers and 313 nanometers to form an alignment control layer.
    Type: Application
    Filed: June 5, 2017
    Publication date: July 25, 2019
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yuko KATANO, Fumitaka KONDO, Kazuhiro OGITA, Hiroshi ENDOU
  • Publication number: 20180127655
    Abstract: A photo-aligning liquid crystal aligning agent for forming a liquid crystal alignment layer capable of materializing a liquid crystal display device, which has a high transmittance while maintaining a liquid crystal aligning property, a voltage holding ratio and the like, and in which flickering is inhibited from being caused after operating for a long time. The photo-aligning liquid crystal aligning agent contains [A] polyamic acid or a derivative thereof which is synthesized by reacting tetracarboxylic acid dianhydride and diamine, and [B] polyamic acid or a derivative thereof obtained by reacting tetracarboxylic acid dianhydride having no photoreactive structure and diamine having no photoreactive structure.
    Type: Application
    Filed: January 9, 2018
    Publication date: May 10, 2018
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Youichiro Ooki, Yuko Katano, Tomoyuki Matsuda, Keisuke Izawa, Rika Hisada
  • Patent number: 9909065
    Abstract: A photo-aligning liquid crystal aligning agent for forming a liquid crystal alignment layer capable of materializing a liquid crystal display device, which has a high transmittance while maintaining a liquid crystal aligning property, a voltage holding ratio and the like, and in which flickering is inhibited from being caused after operating for a long time. The photo-aligning liquid crystal aligning agent contains [A] polyamic acid or a derivative thereof which is synthesized by reacting tetracarboxylic acid dianhydride and diamine, and [B] polyamic acid or a derivative thereof obtained by reacting tetracarboxylic acid dianhydride having no photoreactive structure and diamine having no photoreactive structure.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 6, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Youichiro Ooki, Yuko Katano, Tomoyuki Matsuda, Keisuke Izawa, Rika Hisada
  • Publication number: 20170327744
    Abstract: A photo-aligning liquid crystal alignment layer formed by using a photo-aligning liquid crystal aligning agent containing polyamic acid or a derivative thereof which is synthesized by using tetracarboxylic acid dianhydride having no photoreactive structure having a specific structure and diamine having no photoreactive structure having a specific structure together with at least one of tetracarboxylic acid dianhydride having a photoreactive structure and diamine having a photoreactive structure can reduce storage of residual DC in a liquid crystal display device. Further, the above alignment layer can shorten the relaxation time and can prevent afterimages from being generated.
    Type: Application
    Filed: July 31, 2017
    Publication date: November 16, 2017
    Inventors: Youichiro OOKI, Yuko KATANO, Tomoyuki MATSUDA, Keisuke IZAWA, Rika HISADA
  • Publication number: 20170327743
    Abstract: The present invention relates to a liquid crystal display element including a pair of a substrate arranged opposite to each other, an electrode group disposed on one side or both sides of the pair of substrates facing each other, a plurality of active elements connected to the electrode group, a liquid crystal alignment film disposed on each facing side of the pair of substrates, and a liquid crystal layer interposed between the pair of substrates, wherein the liquid crystal alignment film is manufactured by irradiating linearly polarized light to a film obtained from polyamic acid or a derivative thereof having a photoisomerization structure in the main chain or a film being subject to heat-baking so as to provide alignment-controlling capability, and the liquid crystal layer is a liquid crystal composition having negative (?) dielectric anisotropy. By the present invention, a liquid crystal display element having improved image sticking characteristics and good alignment stability is provided.
    Type: Application
    Filed: August 2, 2017
    Publication date: November 16, 2017
    Inventors: Yuko KATANO, Yukio HIRANO, Keisuke IZAWA, Fumitaka KONDO
  • Patent number: 9796927
    Abstract: A photo-aligning liquid crystal alignment layer formed by using a photo-aligning liquid crystal aligning agent containing polyamic acid or a derivative thereof which is synthesized by using tetracarboxylic acid dianhydride having no photoreactive structure having a specific structure and diamine having no photoreactive structure having a specific structure together with at least one of tetracarboxylic acid dianhydride having a photoreactive structure and diamine having a photoreactive structure can reduce storage of residual DC in a liquid crystal display device. Further, the above alignment layer can shorten the relaxation time and can prevent afterimages from being generated.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: October 24, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Youichiro Ooki, Yuko Katano, Tomoyuki Matsuda, Keisuke Izawa, Rika Hisada
  • Patent number: 9771519
    Abstract: The present invention relates to a liquid crystal display device including a pair of a substrate arranged opposite to each other, an electrode group disposed on one side or both sides of the pair of substrates facing each other, a plurality of active devices connected to the electrode group, a liquid crystal alignment film disposed on each facing side of the pair of substrates, and a liquid crystal layer interposed between the pair of substrates, wherein the liquid crystal alignment film is manufactured by irradiating linearly polarized light to a film obtained from polyamic acid or a derivative thereof having a photoisomerization structure in the main chain or a film being subject to heat-baking so as to provide alignment-controlling capability, and the liquid crystal layer is a liquid crystal composition having negative (?) dielectric anisotropy. By the present invention, a liquid crystal display device having improved image sticking characteristics and good alignment stability is provided.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 26, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yuko Katano, Yukio Hirano, Keisuke Izawa, Fumitaka Kondo
  • Publication number: 20150275089
    Abstract: The present invention relates to a liquid crystal display device including a pair of a substrate arranged opposite to each other, an electrode group disposed on one side or both sides of the pair of substrates facing each other, a plurality of active devices connected to the electrode group, a liquid crystal alignment film disposed on each facing side of the pair of substrates, and a liquid crystal layer interposed between the pair of substrates, wherein the liquid crystal alignment film is manufactured by irradiating linearly polarized light to a film obtained from polyamic acid or a derivative thereof having a photoisomerization structure in the main chain or a film being subject to heat-baking so as to provide alignment-controlling capability, and the liquid crystal layer is a liquid crystal composition having negative (?) dielectric anisotropy. By the present invention, a liquid crystal display device having improved image sticking characteristics and good alignment stability is provided.
    Type: Application
    Filed: October 31, 2013
    Publication date: October 1, 2015
    Inventors: Yuko Katano, Yukio Hirano, Keisuke Izawa, Fumitaka Kondo
  • Publication number: 20150119522
    Abstract: An object of the present invention is to provide a photo-aligning liquid crystal aligning agent for forming a liquid crystal alignment layer capable of materializing a liquid crystal display device which has a high transmittance while maintaining a liquid crystal aligning property, a voltage holding ratio and the like and in which flickering is inhibited from being caused after operated for a long time.
    Type: Application
    Filed: April 10, 2013
    Publication date: April 30, 2015
    Inventors: Youichiro Ooki, Yuko Katano, Tomoyuki Matsuda, Keisuke Izawa, Rika Hisada
  • Publication number: 20150105503
    Abstract: A photo-aligning liquid crystal alignment layer formed by using a photo-aligning liquid crystal aligning agent containing polyamic acid or a derivative thereof which is synthesized by using tetracarboxylic acid dianhydride having no photoreactive structure having a specific structure and diamine having no photoreactive structure having a specific structure together with at least one of tetracarboxylic acid dianhydride having a photoreactive structure and diamine having a photoreactive structure can reduce storage of residual DC in a liquid crystal display device. Further, the above alignment layer can shorten the relaxation time and can prevent afterimages from being generated.
    Type: Application
    Filed: April 10, 2013
    Publication date: April 16, 2015
    Inventors: Youichiro Ooki, Yuko Katano, Tomoyuki Matsuda, Keisuke Izawa, Rika Hisada
  • Publication number: 20020023259
    Abstract: An information processing apparatus is disclosed which includes a recording controlling element for controlling recording of first data about a developer developing an information processing program, a first providing element for providing information about the development of the information processing program, a judging element for judging whether the information processing program functions normally after being developed by the developer about whom the first data have been recorded and a second providing element for providing the information processing program if the program is judged to function normally.
    Type: Application
    Filed: July 10, 2001
    Publication date: February 21, 2002
    Inventors: Hiroyuki Shimizu, Kimiko Abe, Yuko Katano, Motohiro Ohama, Masahiko Takahashi, Masaki Takase, Makoto Noguchi, Ryo Aoki