Patents by Inventor Kohei Ohshima

Kohei Ohshima 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).

  • Publication number: 20240075580
    Abstract: A surface property measuring system capable of accurately measuring a surface property of a polishing pad without damaging the polishing pad and without reducing throughput of the entire polishing process is disclosed. The surface property measuring system includes: an optical measuring device configured to direct light to a polishing surface of a polishing pad when the polishing pad is rotating, and measure a surface property of the polishing pad based on reflected light from the polishing surface; a cover member disposed between the optical measuring device and the polishing pad; and a transparent-liquid supply line coupled to an inlet port provided in the cover member and configured to supply a transparent liquid onto the polishing pad through the inlet port. The cover member has a light transmissive portion on an optical path of the light and the reflected light.
    Type: Application
    Filed: April 20, 2023
    Publication date: March 7, 2024
    Inventors: Toshifumi KIMBA, Kohei OHSHIMA, Kohei OTA
  • Publication number: 20240075579
    Abstract: The present invention relates to a surface property measuring apparatus for a polishing pad used for polishing a substrate, such as a semiconductor wafer, a surface property measuring method for a polishing pad, and a surface property judging mehod for a polishing pad. The surface property measuring apparatus (30) includes: a light-emitting structure (32) configured to irradiate the polishing pad (2) with light from a plurality of directions as viewed from a polishing surface (2a) of the polishing pad (2); and a light-receiving structure (32) configured to receive reflected light traveling in a plurality of directions from the surface of the polishing pad (2).
    Type: Application
    Filed: January 5, 2022
    Publication date: March 7, 2024
    Inventors: Kohei OHSHIMA, Hisanori MATSUO, Toshifumi KIMBA, Nobuyuki TAKADA
  • Publication number: 20240027190
    Abstract: A surface property judging method and a surface property judging system for a polishing pad capable of appropriately judging a surface property of the polishing pad are disclosed. The surface property judging method includes: rotating a polishing table together with a polishing pad which is supported by the polishing table; generating surface data by a surface data generator, the surface data containing a plurality of shape index values representing a surface property of the polishing pad; producing a histogram indicating a distribution of the plurality of shape index values based on the surface data; and judging the surface property of the polishing pad based on the histogram.
    Type: Application
    Filed: July 18, 2023
    Publication date: January 25, 2024
    Inventors: Toshifumi KIMBA, Kohei OHSHIMA
  • Patent number: 9112067
    Abstract: An object relates to an electrode of a semiconductor device or a method for manufacturing a semiconductor device, which includes a bonding step, and problems are: (1) high resistance of a semiconductor device due to the use of an Al electrode, (2) formation of an alloy by Al and Si, (3) high resistance of a film formed by a sputtering method, and (4) defective bonding in a bonding step which is caused if a bonding surface has a large unevenness. A semiconductor device includes a metal substrate or a substrate provided with a metal film, a copper (Cu) plating film over and bonded to the metal substrate or the metal film by employing a thermocompression bonding method, a barrier film over the Cu plating film, a single crystal silicon film over the barrier film, and an electrode layer over the single crystal silicon film.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: August 18, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Teruyuki Fujii, Kohei Ohshima, Junya Maruyama, Akihisa Shimomura
  • Publication number: 20100275989
    Abstract: An object relates to an electrode of a semiconductor device or a method for manufacturing a semiconductor device, which includes a bonding step, and problems are: (1) high resistance of a semiconductor device due to the use of an Al electrode, (2) formation of an alloy by Al and Si, (3) high resistance of a film formed by a sputtering method, and (4) defective bonding in a bonding step which is caused if a bonding surface has a large unevenness. A semiconductor device includes a metal substrate or a substrate provided with a metal film, a copper (Cu) plating film over and bonded to the metal substrate or the metal film by employing a thermocompression bonding method, a barrier film over the Cu plating film, a single crystal silicon film over the barrier film, and an electrode layer over the single crystal silicon film.
    Type: Application
    Filed: April 23, 2010
    Publication date: November 4, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Teruyuki FUJII, Kohei OHSHIMA, Junya MARUYAMA, Akihisa SHIMOMURA
  • Publication number: 20070205423
    Abstract: It is an object to provide a thin-type full-color display device with the long lifetime, inexpensively, in which desired emission luminance and desired color purity can be obtained at a low voltage. In a light-emitting device capable of full-color display, among a plurality of light-emitting elements emitting different emission colors (for example, colors of red (R), green (G), and blue (B)), at least one of the light-emitting elements of an emission color is a light-emitting element including an organic compound (an organic EL element), and the other light-emitting element of an emission color is a light-emitting element using an inorganic material as a light-emitting layer or a fluorescent layer (an inorganic EL element). It is to be noted that the organic EL element and the inorganic EL element are formed over the same substrate.
    Type: Application
    Filed: February 28, 2007
    Publication date: September 6, 2007
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Tomoya Aoyama, Kohei Ohshima, Rie Matsubara, Hideaki Kuwabara