Patents by Inventor Junichi Nagase

Junichi Nagase 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: 8518552
    Abstract: The invention relates to an optical film containing polymers having different repeating units, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The optical film of the invention advantageously has not only high solubility in solvents but also a high level of transparency since the polymers used in the optical film are compatible with each other. Further, wavelength dispersion of the birefringence of the optical film can be controlled by merely changing a ratio of polymers.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: August 27, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Toshiyuki Iida, Tomoyuki Hirayama, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu, Junichi Nagase
  • Publication number: 20130193844
    Abstract: In order to provide an organic electroluminescent light-emitting device with less uneven brightness, which can be manufactured at low cost, a plurality of ribbon-like organic electroluminescent elements are connected to wires, which are connected to electrode terminals for energization at specific locations in a terminal region and mounted on a base material which has a substantially plate-like shape.
    Type: Application
    Filed: October 6, 2011
    Publication date: August 1, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shigenori Morita, Ryohei Kakiuchi, Takahiro Nakai, Jin Yoshikawa, Masahiko Watanabe, Junichi Nagase
  • Publication number: 20130181206
    Abstract: An organic EL device with a light diffusing element that includes a matrix containing a resin component and an ultrafine particle component, and a light diffusing fine particle dispersed in the matrix. Refractive indices of the resin component, the ultrafine particle component, and the light diffusing fine particle satisfy the following expression (1). Further, the light diffusing element includes a concentration adjusted area formed outside a vicinity of a surface of the light diffusing fine particle, in which a weight concentration of the resin component decreases and a weight concentration of the ultrafine particle component increases as a distance from the light diffusing fine particle increases. |nP?nA|<|nP?nB|??(1) In the expression (1), nA represents a refractive index of the resin component of the matrix, nB represents a refractive index of the ultrafine particle component of the matrix, and nP represents a refractive index of the light diffusing fine particle.
    Type: Application
    Filed: September 13, 2011
    Publication date: July 18, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi Nagase, Akinori Nishimura, Hiroyuki Takemoto
  • Publication number: 20130109770
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: April 11, 2011
    Publication date: May 2, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Fukuzaki
  • Publication number: 20120286652
    Abstract: A method for manufacturing an organic EL device, including: while supplying a strip-shaped substrate, forming an organic EL film on the substrate by successively vapor depositing at least an organic layer including a light-emitting layer and an electrode layer on one side of the substrate; and successively winding up the substrate on which the organic EL film is formed by the vapor deposition, wherein the substrate is wound up along with a strip-shaped protective film that is softer than the substrate while supplying the protective film and adhering the protective film to a non-vapor deposition side of the substrate.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro Nakai, Shigenori Morita, Junichi Nagase, Nobukazu Neghishi, Naoko Ichieda, Kazuto Hosokawa
  • Patent number: 8279378
    Abstract: The object of the present invention is to provide a producing method for a lengthwise optical laminate exhibiting high contrast ratio and adaptable to a large-sized display. The present invention provides a producing method for a lengthwise optical laminate, which comprises a step 1 of coating and drying a coating solution comprising a birefringent material and a solvent on a surface of a lengthwise base material to form a birefringent film such that a birefringence index (Anxz[590]) in the thickness direction at a wavelength of 590 nm is 0.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: October 2, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kazunori Futamura, Junichi Nagase, Hiroyuki Yoshimi, Masaki Hayashi
  • Patent number: 8228471
    Abstract: The liquid crystal panel 1 of the present invention comprises a liquid crystal cell 2, a first polarizer 31 disposed on one surface side of the liquid crystal cell 2, a second polarizer 41 disposed on the other surface side of the liquid crystal cell 2, and first optical compensation layer 5 and second optical compensation layer 6 disposed between the first polarizer 31 and second polarizer 41, and the liquid crystal cell 2 satisfies a relationship of 0.8 Re [450]/Re [550] 1, the first optical compensation layer 5 satisfies relationships of the Nz coefficient is from 0.8 to 1.4 and 0.8 Re[450]/Re[550] 1, and the second optical compensation layer 6 satisfies relationships of nx =ny>nz and 0.98 Re[450]/Re[550] 1.04. The liquid crystal panel of the present invention is hardly generated color shift when the panel is viewed from all azimuth angle directions and polar angle directions, so that the liquid crystal panel is excellent in color display characteristics.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: July 24, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Junichi Nagase, Kentarou Takeda
  • Patent number: 8174646
    Abstract: A liquid crystal panel of the present invention comprise a liquid crystal cell, a first polarizer arranged on one of both sides of the liquid crystal cell, and a second polarizer arranged on the other side of the liquid crystal cell, wherein at least one of the first and the second polarizers is dyed with a dichroic material, and the dichroic ratio thereof is from 40 to 100. At least one of the polarizers preferably has a polarization degree of 99% or more and a single transmittance of 35% to 45%. Further, at least one of the polarizers preferably exhibits the following birefringence: ?nxy is from 0.015 to 0.030. The liquid crystal panel of the present invention has the above polarizers, therefore the liquid crystal panel attains high contrast ratio in oblique directions and excellent display characteristics.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: May 8, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kazunori Futamura, Junichi Nagase, Hiroyuki Yoshimi, Masaki Hayashi
  • Publication number: 20110255154
    Abstract: A polarizing plate according to an embodiment of the present invention includes a polarizer, a UV-shielding layer containing inorganic fine particles each having a band gap of 3.0 eV or more and a binder resin and a protective film. The UV-shielding layer contains the inorganic fine particles at a content of 40 to 80 vol %, and has a thickness of 400 nm or less.
    Type: Application
    Filed: March 29, 2011
    Publication date: October 20, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi NAGASE, Bin FANG, Seiji UMEMOTO, Tatsuki NAGATSUKA
  • Publication number: 20110247523
    Abstract: The organic-inorganic composite particles can be dispersed as primary particles in a solvent and/or a resin and have a plurality of mutually different organic groups on the surface of inorganic particles.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 13, 2011
    Applicants: TOHOKU UNIVERSITY, NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Junichi Nagase, Shusaku Shibata, Saori Fukuzaki, Tatsuki Nagatsuka, Takahiro Fukuoka, Tadafumi Ajiri
  • Publication number: 20110176092
    Abstract: [Object] The present invention provides a liquid crystal panel with which a display with extremely small change in color depending on a viewing direction can be realized, and a liquid crystal display including the same. [Solution to Problem] The liquid crystal panel includes: a first polarizer 30; a second polarizer 50; a first optical compensation layer 60; a second optical compensation layer 70; and a liquid crystal cell 40. The first polarizer 30 is arranged on one surface of the liquid crystal cell 40. The second polarizer 50 is arranged on the other surface of the liquid crystal cell 40. The first optical compensation layer 60 is arranged between the liquid crystal cell 40 and the first polarizer 30. The second optical compensation layer 70 is arranged between the liquid crystal cell 40 and the second polarizer 50. The first optical compensation layer 60 satisfies the following mathematical formulae (1) and (2).
    Type: Application
    Filed: December 23, 2010
    Publication date: July 21, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshiyuki IIDA, Tomoyuki HIRAYAMA, Yutaka OHMORI, Miyuki KUROGI, Hisae SHIMIZU, Junichi NAGASE
  • Patent number: 7969542
    Abstract: A liquid crystal panel includes a liquid crystal cell having a liquid crystal layer containing liquid crystal molecules that are vertically aligned in an absence of a voltage; a first optical compensation layer having a relationship of Nz =1 to 2.5 and a relationship of Re1(380) <Re1(550) <Re1(780); a second optical compensation layer having a relationship of nx =ny >nz and a relationship of Re2(380) >Re2(550) >Re2(780); a first polarizer; a third optical compensation layer having a relationship of Nz =1 to 2.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: June 28, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Kentarou Takeda, Junichi Nagase
  • Patent number: 7944531
    Abstract: There are provided a liquid crystal panel and a liquid crystal display apparatus each having an excellent screen contrast, a small color shift, and small display unevenness. The liquid crystal panel includes a liquid crystal cell, a first polarizer, a second polarizer, a protective layer, a first optical compensation layer and a second optical compensation layer. The protective layer has relationships of 0 nm??nd (550)?10 nm and 0 nm?Rth(550)?20 nm. The first optical compensation layer has an absolute value of a photoelastic coefficient of 40×10?12 (m2/N) or less, and has relationships of ?nd(380)<?nd(550)<?nd(780), nx>ny?nz and 90 nm??nd(550)?200 nm. The second optical compensation layer has relationships of Rth(380)>Rth(550)>Rth(780) and nx=ny>nz.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: May 17, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Kentarou Takeda, Nao Murakami, Junichi Nagase, Toshiyuki Iida, Kanto Kobayashi
  • Publication number: 20110109847
    Abstract: A polarizing plate according to an embodiment of the present invention includes a polarizer, a UV-shielding layer containing an inorganic fine particle with a bandgap of 3.0 eV or more and a binder resin, and a protective film.
    Type: Application
    Filed: October 19, 2010
    Publication date: May 12, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi NAGASE, Bin FANG, Seiji UMEMOTO
  • Publication number: 20110025963
    Abstract: A laminated optical film according to an embodiment of the present invention includes a polarizing plate and a retardation layer formed of a water dispersible pressure-sensitive adhesive composition containing an inorganic laminar compound.
    Type: Application
    Filed: July 23, 2010
    Publication date: February 3, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi Nagase, Tomonari Naito, Mika Okada
  • Publication number: 20100277679
    Abstract: There are provided a liquid crystal panel and a liquid crystal display apparatus each having an excellent screen contrast, a small color shift, and small display unevenness. The liquid crystal panel includes a liquid crystal cell, a first polarizer, a second polarizer, a protective layer, a first optical compensation layer and a second optical compensation layer. The protective layer has relationships of 0 nm??nd (550) 10 nm and 0 nm?Rth(550) 20 nm. The first optical compensation layer has an absolute value of a photoelastic coefficient of 40×10?12 (m2/N) or less, and has relationships of ?nd(380)<?nd(550)<?nd(780), nx>ny>nz and 90 nm??nd(550) ?200 nm. The second optical compensation layer has relationships of Rth(380)>Rth(550)>Rth(780) and nx=ny>nz.
    Type: Application
    Filed: November 9, 2006
    Publication date: November 4, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kentarou Takeda, Nao Murakami, Junichi Nagase, Toshiyuki Iida, Kanto Kobayashi
  • Publication number: 20100265579
    Abstract: The invention relates to an optical film containing polymers having different repeating units, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The optical film of the invention advantageously has not only high solubility in solvents but also a high level of transparency since the polymers used in the optical film are compatible with each other. Further, wavelength dispersion of the birefringence of the optical film can be controlled by merely changing a ratio of polymers.
    Type: Application
    Filed: March 11, 2010
    Publication date: October 21, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshiyuki Iida, Tomoyuki Hirayama, Yutaka Ohmori, Miyuki Kurogi, Hisae Shimizu, Junichi Nagase
  • Publication number: 20100165262
    Abstract: The optical laminated film of the present invention comprises a polarizer and a retardation film laminated on one surface of the polarizer, in which the polarizer has a drawn film of a hydrophilic polymer containing a dichroic material. An in-plane birefringence index (?nxy[1000]) of this polarizer at wavelength of 1000 nm is from 0.01 to 0.03, and the retardation film is a film such that an index ellipsoid satisfies the relation of nx>ny?nz. The retardation film is disposed so that the slow axis direction of the retardation film is substantially orthogonal to the absorption axis direction of the above polarizer. The optical laminated film of the present invention may increase contrast ratio in the case of being used for a liquid crystal display, for example.
    Type: Application
    Filed: April 22, 2008
    Publication date: July 1, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi Nagase, Kazunori Futamura, Hiroyuki Yoshimi, Masaki Hayashi
  • Publication number: 20100073608
    Abstract: The object of the present invention is to provide a producing method for a lengthwise optical laminate exhibiting high contrast ratio and adaptable to a large-sized display. The present invention provides a producing method for a lengthwise optical laminate, which comprises a step 1 of coating and drying a coating solution comprising a birefringent material and a solvent on a surface of a lengthwise base material to form a birefringent film such that a birefringence index (?nxz[590]) in the thickness direction at a wavelength of 590 nm is 0.
    Type: Application
    Filed: January 16, 2009
    Publication date: March 25, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazunori Futamura, Junichi Nagase, Hiroyuki Yoshimi, Masaki Hayashi
  • Publication number: 20100066958
    Abstract: An object of the present invention is to provide a liquid crystal panel and a liquid crystal display apparatus which can contribute to the reduction in thickness, realize a high contrast while enhancing viewing angle characteristics, suppress a color shift, and satisfactorily prevent the light leakage in a black display. A liquid crystal panel of the present invention includes a liquid crystal cell having a liquid crystal layer containing liquid crystal molecules that are vertically aligned in an absence of a voltage; a first optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re1(380)<Re1(550)<Re1(780); a second optical compensation layer having a relationship of nx=ny>nz and a relationship of Re2(380)>Re2(550)>Re2(780); a first polarizer; a third optical compensation layer having a relationship of Nz=1 to 2.
    Type: Application
    Filed: November 15, 2007
    Publication date: March 18, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kentarou Takeda, Junichi Nagase