Patents by Inventor Shinji KABURAKI

Shinji KABURAKI 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).

  • Optical semiconductor element
    Patent number: 11515442
    Abstract: An optical semiconductor element having a mesa portion includes a substrate and semiconductor layers on the substrate. The optical semiconductor element further includes a first contact electrode, a second contact electrode on the semiconductor layer, first and second lead-out wires connected to the first and second contact electrodes, respectively, and an insulating film covering at least an upper surface of the semiconductor layer and the second contact electrode. The second lead-out wire is connected to the second contact electrode in an opening of the insulating film. An outer peripheral end of the second contact electrode in at least a portion where the second contact electrode and the second lead-out wire are connected is above and outside an outer peripheral end of a connection portion with the semiconductor layer, and an inner peripheral end is above and inside an inner peripheral end of the connection portion with the semiconductor layer.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: November 29, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenji Fujimoto, Koshi Himeda, Toshihiro Tada, Tetsuro Toritsuka, Shinji Kaburaki
  • OPTICAL SEMICONDUCTOR ELEMENT
    Publication number: 20210036176
    Abstract: An optical semiconductor element having a mesa portion includes a substrate and semiconductor layers on the substrate. The optical semiconductor element further includes a first contact electrode, a second contact electrode on the semiconductor layer, first and second lead-out wires connected to the first and second contact electrodes, respectively, and an insulating film covering at least an upper surface of the semiconductor layer and the second contact electrode. The second lead-out wire is connected to the second contact electrode in an opening of the insulating film. An outer peripheral end of the second contact electrode in at least a portion where the second contact electrode and the second lead-out wire are connected is above and outside an outer peripheral end of a connection portion with the semiconductor layer, and an inner peripheral end is above and inside an inner peripheral end of the connection portion with the semiconductor layer.
    Type: Application
    Filed: October 2, 2020
    Publication date: February 4, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kenji FUJIMOTO, Koshi HIMEDA, Toshihiro TADA, Tetsuro TORITSUKA, Shinji KABURAKI