Patents by Inventor Hajime Watakabe

Hajime Watakabe 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: 9001291
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate including a first color filter configured to transmit light in a first wavelength range, a second color filter configured to transmit light in a second wavelength range of greater wavelengths than the first wavelength range, a first switching element disposed above the second color filter, a second switching element disposed above the second color filter, a first pixel electrode which is electrically connected to the first switching element and is located above the first color filter, and a second pixel electrode which is electrically connected to the second switching element and is located above the second color filter.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: April 7, 2015
    Assignee: Japan Display Inc.
    Inventors: Hajime Watakabe, Arichika Ishida, Masato Hiramatsu
  • Publication number: 20140191231
    Abstract: According to one embodiment, a method of manufacturing a thin-film transistor circuit substrate including forming an oxide semiconductor thin film above an insulative substrate, forming a gate insulation film and a gate electrode which are stacked on a first region of the oxide semiconductor thin film, and exposing from the gate insulation film a second region and a third region of the oxide semiconductor thin film, the second region and the third region being located on both sides of the first region of the oxide semiconductor thin film, forming an interlayer insulation film of silicon nitride including dangling bonds of silicon, the interlayer insulation film covering the second region and the third region of the oxide semiconductor thin film, the gate insulation film and the gate electrode, and forming a source electrode and a drain electrode.
    Type: Application
    Filed: March 12, 2014
    Publication date: July 10, 2014
    Applicant: JAPAN DISPLAY INC.
    Inventors: Tetsuya SHIBATA, Hajime Watakabe, Atsushi Sasaki, Yuki Matsuura, Muneharu Akiyoshi, Hiroyuki Watanabe
  • Patent number: 8710498
    Abstract: According to one embodiment, a method of manufacturing a thin-film transistor circuit substrate including forming an oxide semiconductor thin film above an insulative substrate, forming a gate insulation film and a gate electrode which are stacked on a first region of the oxide semiconductor thin film, and exposing from the gate insulation film a second region and a third region of the oxide semiconductor thin film, the second region and the third region being located on both sides of the first region of the oxide semiconductor thin film, forming an interlayer insulation film of silicon nitride including dangling bonds of silicon, the interlayer insulation film covering the second region and the third region of the oxide semiconductor thin film, the gate insulation film and the gate electrode, and forming a source electrode and a drain electrode.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 29, 2014
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Shibata, Hajime Watakabe, Atsushi Sasaki, Yuki Matsuura, Muneharu Akiyoshi, Hiroyuki Watanabe
  • Publication number: 20130021550
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate including a first color filter configured to transmit light in a first wavelength range, a second color filter configured to transmit light in a second wavelength range of greater wavelengths than the first wavelength range, a first switching element disposed above the second color filter, a second switching element disposed above the second color filter, a first pixel electrode which is electrically connected to the first switching element and is located above the first color filter, and a second pixel electrode which is electrically connected to the second switching element and is located above the second color filter.
    Type: Application
    Filed: January 24, 2012
    Publication date: January 24, 2013
    Inventors: Hajime Watakabe, Arichika Ishida, Masato Hiramatsu
  • Publication number: 20120199827
    Abstract: According to one embodiment, a method of manufacturing a thin-film transistor circuit substrate including forming an oxide semiconductor thin film above an insulative substrate, forming a gate insulation film and a gate electrode which are stacked on a first region of the oxide semiconductor thin film, and exposing from the gate insulation film a second region and a third region of the oxide semiconductor thin film, the second region and the third region being located on both sides of the first region of the oxide semiconductor thin film, forming an interlayer insulation film of silicon nitride including dangling bonds of silicon, the interlayer insulation film covering the second region and the third region of the oxide semiconductor thin film, the gate insulation film and the gate electrode, and forming a source electrode and a drain electrode.
    Type: Application
    Filed: December 19, 2011
    Publication date: August 9, 2012
    Inventors: Tetsuya Shibata, Hajime Watakabe, Atsushi Sasaki, Yuki Matsuura, Muneharu Akiyoshi, Hiroyuki Watanabe
  • Patent number: 8085355
    Abstract: A structure of a plurality of thin film transistors wherein a peripheral circuit on a glass substrate of a liquid crystal display panel; and each of polycrystalline silicon thin film 13 of the thin film transistor is formed on the glass substrate; and each of gate electrode 15 is formed on a gate insulation layer, and each of the gate electrode 15 is overhead corresponding to the polycrystalline silicon thin film 13 for a channel; wherein the gate electrode 15 is comprised a pair of projection part 15A and a gate-channel 15B; and wherein the pair of projection part 15A is formed the both sides of the gate-channel 15B in which the side is for along the channel-direction, and wherein the pair of projection part 15A is enlarged for across the channel-direction.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: December 27, 2011
    Assignee: Toshiba Mobile Display Co., Ltd.
    Inventors: Hajime Watakabe, Masato Hiramatsu, Toshiya Kiyota, Mikio Murata, Masaki Kado, Arichika Ishida, Yoshiaki Nakazaki
  • Publication number: 20100110322
    Abstract: A structure of a plurality of thin film transistors wherein a peripheral circuit on a glass substrate of a liquid crystal display panel; and each of polycrystalline silicon thin film 13 of the thin film transistor is formed on the glass substrate; and each of gate electrode 15 is formed on a gate insulation layer, and each of the gate electrode 15 is overhead corresponding to the polycrystalline silicon thin film 13 for a channel; wherein the gate electrode 15 is comprised a pair of projection part 15A and a gate-channel 15B; and wherein the pair of projection part 15A is formed the both sides of the gate-channel 15B in which the side is for along the channel-direction, and wherein the pair of projection part 15A is enlarged for across the channel-direction.
    Type: Application
    Filed: August 25, 2009
    Publication date: May 6, 2010
    Inventors: Hajime WATAKABE, Masato Hiramatsu, Toshiya Kiyota, Mikio Murata, Masaki Kado, Arichika Ishida, Yoshiaki Nakazaki
  • Patent number: 7573271
    Abstract: An apparatus for measuring electric characteristics of a semiconductor includes a light irradiating means for irradiating light to a characteristic measured semiconductor, an alternating-current voltage source, an electric potential measuring means and an impedance regulator wherein impedance is regulated by an impedance regulator in such a manner that electric potential at an electric potential measuring point of the characteristic measured semiconductor may become zero electric potential in the state in which light is not irradiated on the characteristic measured semiconductor by the light irradiating means. Electric characteristics of the characteristic measured semiconductor are measured based on measurement of electric potential obtained with or without irradiation of light onto the characteristic measured semiconductor. With this arrangement, semiconductor electric characteristics can be measured with high accuracy by a simple arrangement.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: August 11, 2009
    Assignee: National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Toshiyuki Samejima, Hajime Watakabe
  • Publication number: 20080018323
    Abstract: An apparatus for measuring electric characteristics of a semiconductor includes a light irradiating means for irradiating light to a characteristic measured semiconductor, an alternating-current voltage source, an electric potential measuring means and an impedance regulator wherein impedance is regulated by an impedance regulator in such a manner that electric potential at an electric potential measuring point of the characteristic measured semiconductor may become zero electric potential in the state in which light is not irradiated on the characteristic measured semiconductor by the light irradiating means. Electric characteristics of the characteristic measured semiconductor are measured based on measurement of electric potential obtained with or without irradiation of light onto the characteristic measured semiconductor. With this arrangement, semiconductor electric characteristics can be measured with high accuracy by a simple arrangement.
    Type: Application
    Filed: August 25, 2005
    Publication date: January 24, 2008
    Inventors: Toshiyuki Samejima, Hajime Watakabe