Patents by Inventor Osamu Onitsuka

Osamu Onitsuka 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: 6049167
    Abstract: In an organic EL display device, an organic EL multilayer structure is disposed in a gastight space defined between a substrate and a shield member and filled with an inert gas. The organic EL multilayer structure includes organic materials having a Tg of at most 140.degree. C. The shield member is a continuous member free of a filling port. The shield member is joined to the substrate with a UV-curing epoxy resin adhesive of the cationic curing type. The inert gas in the space has a water content of at most 100 ppm. The steps of forming layers on substrates to form organic EL multilayer structures and the steps of adhesively joining shield members to the substrates are carried out in inert gas atmospheres.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: April 11, 2000
    Assignee: TDK Corporation
    Inventors: Osamu Onitsuka, Akira Ebisawa, Mitsunari Suzuki, Hiroshi Yamamoto, Michio Arai
  • Patent number: 6023371
    Abstract: A color conversion material comprises a high-molecular material having a light transmittance of at least 90% in a visible light region, a fluorescent dye contained therein, and a fluorescent pigment particle dispersed therein. The wavelength of unconverted light incident on the color conversion material is up to 520 nm, the light emission maximum wavelength of the conversion material is at least 580 nm upon incident light conversion, and the conversion efficiency of at least 10% is obtained.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: February 8, 2000
    Assignee: TDK Corporation
    Inventors: Osamu Onitsuka, Tetsushi Inoue, Akira Ebisawa, Mutsuko Nakano
  • Patent number: 4611221
    Abstract: A solid state image pick-up device comprises a charge storage section for storing the charge corresponding to an image pattern, and a read-out section for reading out the stored charge in this charge storage section. The read-out section is connected to an output of the charge storage section and has a junction type field effect transistor to read out the stored charge as a picture signal.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: September 9, 1986
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Masaharu Imai, Ikuo Tohukuji, Osamu Onitsuka, Terumasa Morita, Shunpei Tanaka, Hiroshi Matsui