Patents by Inventor Koujirou TACHI

Koujirou TACHI 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).

  • Organic electroluminescence display device and method for manufacturing the same
    Patent number: 9040969
    Abstract: The organic electroluminescence display device has a laminated portion on a base substrate. The device may have a cavernous portion formed by exploding a part of the laminated portion in a screening processing. A protective layer is formed to cover a whole surface of a wall defining the cavernous portion. Therefore, substances contained in the air are prevented from contacting to an organic electroluminescence layer at least partially defining the cavernous portion. Therefore, even if moisture is contained in the air, it is possible to prevent moisture from being absorbed by the organic electroluminescence layer. Moreover, since moisture is not absorbed by the organic electroluminescence layer, it is possible to reduce irregular spot on the device. In addition, it is possible to reduce a short circuit at an open defective portion.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: May 26, 2015
    Assignee: DENSO CORPORATION
    Inventors: Akito Toyoda, Koujirou Tachi, Masayuki Katayama
  • ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20140077197
    Abstract: The organic electroluminescence display device has a laminated portion on a base substrate. The device may have a cavernous portion formed by exploding a part of the laminated portion in a screening processing. A protective layer is formed to cover a whole surface of a wall defining the cavernous portion. Therefore, substances contained in the air are prevented from contacting to an organic electroluminescence layer at least partially defining the cavernous portion. Therefore, even if moisture is contained in the air, it is possible to prevent moisture from being absorbed by the organic electroluminescence layer. Moreover, since moisture is not absorbed by the organic electroluminescence layer, it is possible to reduce irregular spot on the device. In addition, it is possible to reduce a short circuit at an open defective portion.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: DENSO CORPORATION
    Inventors: Akito TOYODA, Koujirou TACHI, Masayuki KATAYAMA