Patents by Inventor Takuji Namatame

Takuji Namatame 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: 10578962
    Abstract: Provided is a self-supporting film that has an anti-reflection function independently, so that the self-supporting film exhibits excellent optical characteristics as a result. A self-supporting film has a rugged-structure layer having periodic rugged shapes formed on a surface thereof, with these periodic rugged shapes being formed on at least one surface. The average thickness of the self-supporting film ranges from 0.2 ?m to 20.0 ?m. The rugged-structure layer has a yield strain of 1% or greater and a tensile elongation of 10% or greater.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 3, 2020
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Seitaro Doi, Kenichiro Iwamura, Takuji Namatame
  • Publication number: 20160334699
    Abstract: Provided is a self-supporting film that has an anti-reflection function independently, so that the self-supporting film exhibits excellent optical characteristics as a result. A self-supporting film has a rugged-structure layer having periodic rugged shapes formed on a surface thereof, with these periodic rugged shapes being formed on at least one surface. The average thickness of the self-supporting film ranges from 0.2 ?m to 20.0 ?m. The rugged-structure layer has a yield strain of 1% or greater and a tensile elongation of 10% or greater.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Applicant: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Seitaro DOI, Kenichiro IWAMURA, Takuji NAMATAME
  • Patent number: 8927056
    Abstract: A dielectric layer 2 is formed on a region including grid-shaped convex portions 1a of a resin substrate 1 having the grid-shaped convex portions 1a with pitches of 80 nm to 120 nm on its surface, and metal wires 3 are formed on the dielectric layer 2. It is thereby possible to obtain a wire grid polarizer having a microstructural concavo-convex grid with pitches of the level of 120 nm or less that has not been implemented.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: January 6, 2015
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
  • Publication number: 20130004711
    Abstract: Provided is a self-supporting film that has an anti-reflection function independently, so that the self-supporting film exhibits excellent optical characteristics as a result. A self-supporting film has a rugged-structure layer having periodic rugged shapes formed on a surface thereof, with these periodic rugged shapes being formed on at least one surface. The average thickness of the self-supporting film ranges from 0.2 ?m to 20.0 ?m. The rugged-structure layer has a yield strain of 1% or greater and a tensile elongation of 10% or greater.
    Type: Application
    Filed: April 13, 2011
    Publication date: January 3, 2013
    Inventors: Seitaro Doi, Kenichiro Iwamura, Takuji Namatame
  • Patent number: 7894019
    Abstract: A wire grid polarizer has mainly a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: February 22, 2011
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
  • Patent number: 7605883
    Abstract: A wire grid polarizer has a resin substrate having grid-shaped convex portions, a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions, and metal wires provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: October 20, 2009
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
  • Publication number: 20080303986
    Abstract: A wire grid polarizer has mainly a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.
    Type: Application
    Filed: April 23, 2008
    Publication date: December 11, 2008
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
  • Publication number: 20070242187
    Abstract: A wire grid polarizer has a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.
    Type: Application
    Filed: October 17, 2006
    Publication date: October 18, 2007
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
  • Publication number: 20070087549
    Abstract: A dielectric layer 2 is formed on a region including grid-shaped convex portions 1a of a resin substrate 1 having the grid-shaped convex portions 1a with pitches of 80 nm to 120 nm on its surface, and metal wires 3 are formed on the dielectric layer 2. It is thereby possible to obtain a wire grid polarizer having a microstructural concavo-convex grid with pitches of the level of 120 nm or less that has not been implemented.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 19, 2007
    Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu