Patents by Inventor Shunsuke Yamanaka

Shunsuke Yamanaka 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: 11150503
    Abstract: A liquid crystal display device including, sequentially in the following order: a light source unit, a rear side polarizer, a liquid crystal cell, a front side polarizer, and a viewing angle expansion film. Alternatively, a liquid crystal display device including, sequentially in the following order: a light source unit, a rear side polarizer, a liquid crystal cell, a viewing angle expansion film, and a front side polarizer. The liquid crystal display device optionally includes a rear side optical film provided between the rear side polarizer and the liquid crystal cell; and a front side optical film provided between the front side polarizer and the liquid crystal cell.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 19, 2021
    Assignee: ZEON CORPORATION
    Inventors: Hiroyuki Yoshimi, Shunsuke Yamanaka
  • Patent number: 10895783
    Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid-crystal molecules, wherein the first substrate has an orientation-controlling force caused by stretching, and a slow axis of the first substrate is different from a lengthwise direction of the first substrate; an optically anisotropic laminate, a circular polarizing plate, and an organic EL display device having the anisotropic layer; as well as manufacturing method thereof.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: January 19, 2021
    Assignee: ZEON CORPORATION
    Inventors: Shunsuke Yamanaka, Masakazu Saito, Hiromasa Hashimoto
  • Patent number: 10663635
    Abstract: The present invention provides an optical film containing an additive. The optical film includes a high concentration portion containing the additive, and a low concentration portion containing the additive at a concentration lower than the high concentration portion. The low concentration portion is provided on both sides of the high concentration portion in a thickness direction of the optical film, and the low concentration portion is provided on both sides of the high concentration portion in a width direction of the optical film.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 26, 2020
    Assignee: ZEON CORPORATION
    Inventors: Hyota Nakahori, Shunsuke Yamanaka
  • Patent number: 10656468
    Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, in which the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the to substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the pola
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: May 19, 2020
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Patent number: 10353527
    Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: July 16, 2019
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Publication number: 20190187351
    Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid-crystal molecules, wherein the first substrate has an orientation-controlling force caused by stretching, and a slow axis of the first substrate is different from a lengthwise direction of the first substrate; an optically anisotropic laminate, a circular polarizing plate, and an organic EL display device having the anisotropic layer; as well as manufacturing method thereof.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 20, 2019
    Applicant: ZEON CORPORATION
    Inventors: Shunsuke YAMANAKA, Masakazu SAITO, Hiromasa HASHIMOTO
  • Publication number: 20190171051
    Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, in which the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the to substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the pola
    Type: Application
    Filed: January 7, 2019
    Publication date: June 6, 2019
    Applicant: ZEON CORPORATON
    Inventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
  • Patent number: 10261227
    Abstract: A method for producing a retardation film comprising the steps of: co-extruding or simultaneously casting a thermoplastic resin A and a thermoplastic resin B to obtain a laminated film comprising a layer of the thermoplastic resin A and a layer of the thermoplastic resin B; and uniaxially stretching the laminated film at least twice to cross a molecular orientation axis in the layer of the thermoplastic resin A and a molecular orientation axis in the layer of the thermoplastic resin B each other at almost right angles.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: April 16, 2019
    Assignee: ZEON CORPORATION
    Inventors: Taku Hatano, Kohei Arakawa, Shunsuke Yamanaka
  • Patent number: 10216346
    Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: February 26, 2019
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Patent number: 10209567
    Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, in which the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the polariz
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: February 19, 2019
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Publication number: 20190042027
    Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.
    Type: Application
    Filed: October 1, 2018
    Publication date: February 7, 2019
    Applicant: ZEON CORPORATION
    Inventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
  • Patent number: 10175402
    Abstract: A phase difference film layered body is obtained by stretching a film before stretching, the film before stretching including: a P1 layer formed of a resin p1 containing polyphenylene ether having a positive intrinsic birefringence value and a polystyrene-based polymer having a negative intrinsic birefringence value and having a syndiotactic structure; and a P2 layer disposed in contact with the P1 layer and formed of a resin p2 containing an acrylic resin or an alicyclic structure-containing polymer. In the resin p1, the weight ratio of (the content of the polyphenylene ether)/(the content of the polystyrene-based polymer) is 35/65 to 45/55. A method for producing the phase difference film layered body and a method for producing a phase difference film using the phase difference film layered body are also provided.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: January 8, 2019
    Assignee: ZEON CORPORATION
    Inventors: Takashi Morita, Kohei Fujii, Tomokazu Kinohira, Shunsuke Yamanaka, Taku Hatano
  • Patent number: 10175831
    Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate, a first conductive layer, a second conductive layer, and a substrate, in which the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the polarizing film at an angle of about 45° as viewed in the stacking direction.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 8, 2019
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Publication number: 20180348568
    Abstract: A liquid crystal display device including, sequentially in the following order: a light source unit, a rear side polarizer, a liquid crystal cell, a front side polarizer, and a viewing angle expansion film. Alternatively, a liquid crystal display device including, sequentially in the following order: a light source unit, a rear side polarizer, a liquid crystal cell, a viewing angle expansion film, and a front side polarizer. The liquid crystal display device optionally includes a rear side optical film provided between the rear side polarizer and the liquid crystal cell; and a front side optical film provided between the front side polarizer and the liquid crystal cell.
    Type: Application
    Filed: December 14, 2016
    Publication date: December 6, 2018
    Applicant: ZEON CORPORATION
    Inventors: Hiroyuki YOSHIMI, Shunsuke YAMANAKA
  • Publication number: 20180107043
    Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, in which the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the polariz
    Type: Application
    Filed: November 28, 2017
    Publication date: April 19, 2018
    Applicant: ZEON CORPORATION
    Inventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
  • Publication number: 20180081469
    Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 22, 2018
    Applicant: ZEON CORPORATION
    Inventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
  • Patent number: 9870107
    Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: January 16, 2018
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Patent number: 9857633
    Abstract: A display device including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a predetermined phase difference, the viewing-side polarizing plate has a polarizing film, a slow axis of optical film intersects a transmission axis of polarizing film at predetermined angle.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 2, 2018
    Assignee: ZEON CORPORATION
    Inventors: Tetsuya Toyoshima, Shunsuke Yamanaka
  • Publication number: 20170254937
    Abstract: The present invention provides an optical film containing an additive. The optical film includes a high concentration portion containing the additive, and a low concentration portion containing the additive at a concentration lower than the high concentration portion. The low concentration portion is provided on both sides of the high concentration portion in a thickness direction of the optical film, and the low concentration portion is provided on both sides of the high concentration portion in a width direction of the optical film.
    Type: Application
    Filed: September 10, 2015
    Publication date: September 7, 2017
    Applicant: ZEON CORPORATION
    Inventors: Hyota NAKAHORI, Shunsuke YAMANAKA
  • Patent number: 9488866
    Abstract: An optical laminate having layer A having a resin having a negative intrinsic birefringence and at least one layer B having a transparent resin, having substantially no orientation and laminated at least on one face of layer A and satisfies a relation |Re(A)|>|Re(B)|, wherein Re(A) and Re(B) represent in-plane retardations of layer A and layer B, respectively, measured with light having a wavelength of 400 to 700 nm, an optical element having a laminate of the optical laminate and a polarizer plate, and a liquid crystal display device using at least one sheet of the optical laminate. In the liquid crystal display device, optical compensation can be made in accordance with the mode of the liquid crystal display by the three dimensional control of the refractive index, and the liquid crystal display device provides an image display with liquid crystals exhibiting small change in the phase contrast depending on the viewing angle.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 8, 2016
    Assignee: ZEON CORPORATION
    Inventors: Shunsuke Yamanaka, Kohei Arakawa