Patents by Inventor Kazumasa Kawase

Kazumasa Kawase 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: 11971570
    Abstract: Provided are a light diffuser in which the brightness or hue in an emission surface of the light diffuser is controlled, a lighting device, and a method of manufacturing such a light diffuser. A light diffuser (100) includes: an incident surface (121) to receive first light (Li); a light scattering portion (110) that includes light scattering particles (112) present in a medium (111) and generates scattered light by guiding the received first light and scattering the received first light with the light scattering particles; and an emission surface (122) to emit the scattered light, wherein a concentration of the light scattering particles in the light scattering portion is distributed such that the concentration increases non-linearly and continuously or discontinuously with distance from an incident edge in a light guiding direction of the first light in the light scattering portion.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: April 30, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Fujita, Kazumasa Kawase
  • Publication number: 20220373163
    Abstract: Provided are a light diffuser in which the brightness or hue in an emission surface of the light diffuser is controlled, a lighting device, and a method of manufacturing such a light diffuser. A light diffuser (100) includes: an incident surface (121) to receive first light (Li); a light scattering portion (110) that includes light scattering particles (112) present in a medium (111) and generates scattered light by guiding the received first light and scattering the received first light with the light scattering particles; and an emission surface (122) to emit the scattered light, wherein a concentration of the light scattering particles in the light scattering portion is distributed such that the concentration increases non-linearly and continuously or discontinuously with distance from an incident edge in a light guiding direction of the first light in the light scattering portion.
    Type: Application
    Filed: November 19, 2019
    Publication date: November 24, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi FUJITA, Kazumasa KAWASE
  • Patent number: 7910053
    Abstract: A semiconductor device includes a semiconductor layer, an Al alloy film electrically connected to the semiconductor layer, and a transparent electrode layer directly contacting with the Al alloy film at least over an insulating substrate. The Al alloy film includes one or more kinds of elements selected from Fe, Co and Ni in total of 0.5 to 10 mol %, and a remaining substantially comprises Al.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: March 22, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Inoue, Nobuaki Ishiga, Kensuke Nagayama, Kazumasa Kawase
  • Patent number: 7825515
    Abstract: A semiconductor device includes a film containing silicon as the main ingredient, and an aluminum alloy film, such as a source electrode and a drain electrode, that is directly connected to the film containing silicon as the main ingredient, such as an ohmic low-resistance Si film, and contains at least Al, Ni, and N in the vicinity of the bonding interface. The Aluminum alloy film has a good contact characteristic when directly connected to the film containing silicon as the main ingredient without having a barrier layer formed of high melting point metal.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: November 2, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Inoue, Nobuaki Ishiga, Kensuke Nagayama, Naoki Tsumura, Takumi Nakahata, Kazumasa Kawase
  • Publication number: 20090065942
    Abstract: A semiconductor device includes a film containing silicon as the main ingredient, and an aluminum alloy film, such as a source electrode and a drain electrode, that is directly connected to the film containing silicon as the main ingredient, such as an ohmic low-resistance Si film, and contains at least Al, Ni, and N in the vicinity of the bonding interface. The Aluminum alloy film has a good contact characteristic when directly connected to the film containing silicon as the main ingredient without having a barrier layer formed of high melting point metal.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 12, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori INOUE, Nobuaki Ishiga, Kensuke Nagayama, Naoki Tsumura, Takumi Nakahata, Kazumasa Kawase
  • Patent number: 7420215
    Abstract: A transparent conductive film substantially made from In2O3, SnO2 and ZnO, having a molar ratio In/(In+Sn+Zn) of 0.65 to 0.8 and also a molar ratio Sn/Zn of 1 or less: The transparent conductive film has a favorable electric contact property with an electrode or line made from Al or Al alloy film. Further, a semiconductor device having an electrode or line made from the transparent conductive film has high reliability and productivity.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: September 2, 2008
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Inoue, Nobuaki Ishiga, Kensuke Nagayama, Toru Takeguchi, Kazumasa Kawase
  • Publication number: 20080187747
    Abstract: A dielectric film wherein N in the state of an Si3=?N bonding is present in a concentration of 3 atomic % or more in the surface side of an oxide film and also is present in a concentration of 0.1 atomic % or less in the interface side of the oxide film can achieve the prevention of the B diffusion and also the prevention of the deterioration of the NBTI resistance in combination. When the Ar/N2 radical nitridation is used, it is difficult for the resultant oxide film to satisfy the condition wherein N in the above bonding state is present in a concentration of 3 atomic % or more in the surface side of an oxide film and simultaneously is present in a concentration of 0.1 atomic % or less in the interface side of the oxide film, whereas, the above distribution of the N concentration can be achieved by using any of the gas combinations of Xe/N2, Kr/N2, Ar/NH3, Xe/NH3, Kr/NH3, Ar/N2/H2, Xe/N2/H2 and Kr/N2/H2.
    Type: Application
    Filed: January 20, 2006
    Publication date: August 7, 2008
    Applicant: TOHOKU UNIVERSITY
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Tetsuya Goto, Kazumasa Kawase
  • Publication number: 20080012016
    Abstract: A transparent conductive film substantially made from In2O3, SnO2 and ZnO, having a molar ratio In/(In+Sn+Zn) of 0.65 to 0.8 and also a molar ratio Sn/Zn of 1 or less: The transparent conductive film has a favorable electric contact property with an electrode or line made from Al or Al alloy film. Further, a semiconductor device having an electrode or line made from the transparent conductive film has high reliability and productivity.
    Type: Application
    Filed: June 22, 2007
    Publication date: January 17, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori INOUE, Nobuaki Ishiga, Kensuke Nagayama, Toru Takeguchi, Kazumasa Kawase
  • Publication number: 20070284742
    Abstract: A semiconductor device includes a semiconductor layer, an Al alloy film electrically connected to the semiconductor layer, and a transparent electrode layer directly contacting with the Al alloy film at least over an insulating substrate. The Al alloy film includes one or more kinds of elements selected from Fe, Co and Ni in total of 0.5 to 10 mol %, and a remaining substantially comprises Al.
    Type: Application
    Filed: April 27, 2007
    Publication date: December 13, 2007
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori Inoue, Nobuaki Ishiga, Kensuke Nagayama, Kazumasa Kawase