Patents by Inventor Chikashi Kobayashi

Chikashi Kobayashi 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: 9726944
    Abstract: A liquid crystal display device is provided. The liquid crystal display device including a first substrate; a second substrate; a first electrode provided on a first surface of the first substrate, the first surface facing the second substrate, the first electrode including a plurality of convex and concave portions; a second electrode provided on a second surface of the second substrate; and a liquid crystal layer provided between the first substrate and the second substrate.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: August 8, 2017
    Assignee: Sony Corporation
    Inventors: Shunichi Suwa, Masashi Miyakawa, Chikashi Kobayashi
  • Publication number: 20170139279
    Abstract: A liquid crystal display is formed by arraying a plurality of pixels 10, and the pixel 10 includes a first substrate 20, a second substrate 50, a first electrode 120 formed on the first substrate 20, a second electrode 52 formed on the second substrate 50, and a liquid crystal layer 60. A pretilt angle is provided to a liquid crystal molecule 61, and the first electrode 120 is formed of a transparent conductive material layer and a foundation layer 150 including a plurality of projecting portions 130 and recessed portions 140. A first transparent conductive material layer 135 connected to a first power feeding unit is formed on a projecting portion top surface 151 of the foundation layer 150, and a second transparent conductive material layer 145 connected to a second power feeding unit is formed on a recessed portion bottom surface 152 of the foundation layer 150.
    Type: Application
    Filed: March 3, 2015
    Publication date: May 18, 2017
    Inventors: SHUNICHI SUWA, MASASHI MIYAKAWA, CHIKASHI KOBAYASHI
  • Publication number: 20170038645
    Abstract: A liquid crystal display device is provided. The liquid crystal display device including a first substrate; a second substrate; a first electrode provided on a first surface of the first substrate, the first surface facing the second substrate, the first electrode including a plurality of convex and concave portions; a second electrode provided on a second surface of the second substrate; and a liquid crystal layer provided between the first substrate and the second substrate.
    Type: Application
    Filed: October 18, 2016
    Publication date: February 9, 2017
    Inventors: Shunichi SUWA, Masashi MIYAKAWA, Chikashi KOBAYASHI
  • Patent number: 9488878
    Abstract: There is provided a liquid crystal display device comprising: a first substrate (20); a second substrate (50); a first electrode (140) formed on a first surface of the first substrate (20), the first surface facing the second substrate (50), the first electrode (140) including a plurality of convex and concave portions (141); a first oriented film (21) formed on the first surface of the first substrate (20); a second electrode (160) formed on a second surface of a second substrate (50), the second surface facing the first substrate (20); and a liquid crystal layer (70) provided between the first substrate (20) and the second substrate (50), wherein at least one of the convex portions (143,144) includes a plurality of stepped portions. There is also provided a method of manufacturing a liquid crystal display device.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 8, 2016
    Assignee: Sony Corporation
    Inventors: Shunichi Suwa, Masashi Miyakawa, Chikashi Kobayashi
  • Patent number: 9465244
    Abstract: There is provided a liquid crystal display including: a liquid crystal display element which includes a pair of alignment films which are provided on facing surface sides of a pair of substrates, and a liquid crystal layer which is provided between the pair of alignment films and is configured to have a liquid crystal composition containing liquid crystal molecules having negative dielectric anisotropy, in which at least one of the pair of alignment films contains a compound obtained by crosslinking polymer compounds each including a first side chain which interacts with the liquid crystal molecules and a crosslinkable functional group as a second side chain, with each other, the liquid crystal composition configuring the liquid crystal layer contains at least one kind of an alkenyl compound represented by the following general formula (AN-1), and pretilt is applied to the liquid crystal molecules by the crosslinked compound.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: October 11, 2016
    Assignee: Sony Corporation
    Inventors: Shunichi Suwa, Seiji Shibahara, Masashi Miyakawa, Chikashi Kobayashi
  • Patent number: 9389468
    Abstract: A liquid crystal display device includes multiple pixels which are arrayed. Each pixel includes a first substrate, a second substrate, a first electrode formed on an opposing face of the first substrate which faces the second substrate, a second electrode formed on an opposing face of the second substrate which faces the first substrate, a liquid crystal layer which includes liquid crystal molecules, situated between the first electrode and the second electrode, and a planarization layer. The liquid crystal molecules are pretilted. Multiple ridge-and-groove portions are formed at the first electrode. At least the grooves of the first electrode are filled in by the planarization layer.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: July 12, 2016
    Assignee: Sony Corporation
    Inventors: Masashi Miyakawa, Chikashi Kobayashi, Shunichi Suwa
  • Publication number: 20150131040
    Abstract: There is provided a liquid crystal display device comprising: a first substrate (20); a second substrate (50); a first electrode (140) formed on a first surface of the first substrate (20), the first surface facing the second substrate (50), the first electrode (140) including a plurality of convex and concave portions (141); a first oriented film (21) formed on the first surface of the first substrate (20); a second electrode (160) formed on a second surface of a second substrate (50), the second surface facing the first substrate (20); and a liquid crystal layer (70) provided between the first substrate (20) and the second substrate (50), wherein at least one of the convex portions (143,144) includes a plurality of stepped portions. There is also provided a method of manufacturing a liquid crystal display device.
    Type: Application
    Filed: April 11, 2013
    Publication date: May 14, 2015
    Applicant: Sony Corporation
    Inventors: Shunichi Suwa, Masashi Miyakawa, Chikashi Kobayashi
  • Patent number: 9025123
    Abstract: A liquid crystal display device includes a plurality of pixels arranged in a matrix, each pixel having: first and second substrates; a first electrode formed on an opposing face of the first substrate opposing the second substrate; a first alignment film covering the first electrode and the opposing face of the first substrate; a second electrode formed on the opposing face of the second substrate opposing the first substrate; a second alignment film covering the second electrode and the opposing face of the second substrate, and a liquid crystal layer which is provided between the first alignment film and the second alignment film and includes liquid crystal molecules, where a pretilt is imparted on the liquid crystal molecules, a plurality of uneven portions is formed on the first electrode, and a width of a portion of the convex portions provided on the first electrode becomes narrower toward the tip portion.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 5, 2015
    Assignee: Sony Corporation
    Inventors: Chikashi Kobayashi, Shunichi Suwa, Masashi Miyakawa
  • Publication number: 20150002798
    Abstract: A liquid crystal display device includes multiple pixels which are arrayed. Each pixel includes a first substrate, a second substrate, a first electrode formed on an opposing face of the first substrate which faces the second substrate, a second electrode formed on an opposing face of the second substrate which faces the first substrate, a liquid crystal layer which includes liquid crystal molecules, situated between the first electrode and the second electrode, and a planarization layer. The liquid crystal molecules are pretilted. Multiple ridge-and-groove portions are formed at the first electrode. At least the grooves of the first electrode are filled in by the planarization layer.
    Type: Application
    Filed: June 20, 2014
    Publication date: January 1, 2015
    Applicant: Sony Corporation
    Inventors: Masashi Miyakawa, Chikashi Kobayashi, Shunichi Suwa
  • Publication number: 20140307211
    Abstract: There is provided a liquid crystal display including: a liquid crystal display element which includes a pair of alignment films which are provided on facing surface sides of a pair of substrates, and a liquid crystal layer which is provided between the pair of alignment films and is configured to have a liquid crystal composition containing liquid crystal molecules having negative dielectric anisotropy, in which at least one of the pair of alignment films contains a compound obtained by crosslinking polymer compounds each including a first side chain which interacts with the liquid crystal molecules and a crosslinkable functional group as a second side chain, with each other, the liquid crystal composition configuring the liquid crystal layer contains at least one kind of an alkenyl compound represented by the following general formula (AN-1), and pretilt is applied to the liquid crystal molecules by the crosslinked compound.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 16, 2014
    Applicant: Sony Corporation
    Inventors: Shunichi Suwa, Seiji Shibahara, Masashi Miyakawa, Chikashi Kobayashi
  • Publication number: 20140125896
    Abstract: According to some aspects, a liquid crystal display panel comprising an electrode is provided. The electrode comprises a plurality of convex branch electrode portions arranged in a plane, the convex branch electrode portions being convex when viewed from a first direction perpendicular to the plane and extending from a central region of the electrode to a periphery of the electrode, and a plurality of concave branch electrode portions, the concave branch electrode portions being concave when viewed from the first direction, extending from the central region to the periphery and adjacent to convex branch electrode portions. According to some aspects, a method of applying a pretilt to molecules in a liquid crystal layer of a liquid crystal display panel by applying a voltage to the liquid crystal layer via first and second electrodes is provided.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 8, 2014
    Applicant: Sony Corporation
    Inventors: Shunichi Suwa, Masashi Miyakawa, Chikashi Kobayashi, Yoji Nagase
  • Publication number: 20140111753
    Abstract: A liquid crystal display device includes a plurality of pixels arranged in a matrix, each pixel having: first and second substrates; a first electrode formed on an opposing face of the first substrate opposing the second substrate; a first alignment film covering the first electrode and the opposing face of the first substrate; a second electrode formed on the opposing face of the second substrate opposing the first substrate; a second alignment film covering the second electrode and the opposing face of the second substrate, and a liquid crystal layer which is provided between the first alignment film and the second alignment film and includes liquid crystal molecules, where a pretilt is imparted on the liquid crystal molecules, a plurality of uneven portions is formed on the first electrode, and a width of a portion of the convex portions provided on the first electrode becomes narrower toward the tip portion.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 24, 2014
    Applicant: Sony Corporation
    Inventors: Chikashi Kobayashi, Shunichi Suwa, Masashi Miyakawa
  • Patent number: 6397022
    Abstract: An image forming apparatus includes an image reading part for performing a reading operation of reading an image, an image output part for performing an output operation of outputting the image read by the image reading part on a sheet, and a stopping section for stopping only one of the reading operation of the image reading part and the output operation of the image output part.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: May 28, 2002
    Assignee: Fuji Xerox Co. Ltd.
    Inventors: Takashi Hirai, Nobuyuki Kutoh, Kenjiro Hirayama, Kazuyuki Katoh, Chikashi Kobayashi, Masanori Kagino, Masayuki Kaji
  • Publication number: 20010008587
    Abstract: An image forming apparatus includes an image reading part for performing a reading operation of reading an image, an image output part for performing an output operation of outputting the image read by the image reading part on a sheet, and a stopping section for stopping only one of the reading operation of the image reading part and the output operation of the image output part.
    Type: Application
    Filed: December 1, 2000
    Publication date: July 19, 2001
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takashi Hira, Nobuyuki Kutoh, Kenjiro Hirayama, Kazuyuki Katoh, Chikashi Kobayashi, Masanori Kagino, Masayuki Kaji