Patents by Inventor Mutsuo Kawasaki

Mutsuo Kawasaki 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).

  • Mounting method for semiconductor light emitter using resist with openings of different sizes
    Patent number: 9048407
    Abstract: The present invention is a method for mounting, on a ceramic substrate (9), an LED chip (1), in which an upper surface of a positive electrode (6) is in a higher position than an upper surface of a negative electrode (5). The method includes the steps of: (i) laminating resist (16) on the negative electrode (5) and the positive electrode (6) and forming openings (16a and 16b) in the resist (16); (ii) forming bumps (11 and 12) in the respective openings (16a and 16b); (iii) removing the resist (16); and (iv) bonding bumps (11 and 12) to the ceramic substrate (9). A cross-sectional area of the opening (16a) is larger than a cross-sectional area of the opening (16b).
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: June 2, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuhiro Koyama, Katsuji Kawakami, Mutsuo Kawasaki, Osamu Miyake, Hajime Oda, Keiichi Sawai
  • MOUNTING METHOD FOR SEMICONDUCTOR LIGHT EMITTER
    Publication number: 20130065331
    Abstract: The present invention is a method for mounting, on a ceramic substrate (9), an LED chip (1), in which an upper surface of a positive electrode (6) is in a higher position than an upper surface of a negative electrode (5). The method includes the steps of: (i) laminating resist (16) on the negative electrode (5) and the positive electrode (6) and forming openings (16a and 16b) in the resist (16); (ii) forming bumps (11 and 12) in the respective openings (16a and 16b); (iii) removing the resist (16); and (iv) bonding bumps (11 and 12) to the ceramic substrate (9). A cross-sectional area of the opening (16a) is larger than a cross-sectional area of the opening (16b).
    Type: Application
    Filed: June 8, 2011
    Publication date: March 14, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yasuhiro Koyama, Katsuji Kawakami, Mutsuo Kawasaki, Osamu Miyake, Hajime Oda, Keiichi Sawai