Patents by Inventor Tomoji Ishii

Tomoji Ishii 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: 4717945
    Abstract: A solid state image pick-up device with a shutter function including a number of charge coupled devices of vertical overflow domain type is disclosed. A light receiving portion comprises a p.sup.- epitaxial layer arranged on a main surface of an n.sup.+ substrate and an n.sup.+ diffusion surface region is provided in a surface of the p.sup.- layer. A p.sup.+ control gate for controlling a potential barrier between the n.sup.+ diffusion surface region and the p.sup.- epitaxial layer is formed in the epitaxial layer adjacent to the light receiving portion, and a p well region is formed in the epitaxial layer adjacent to the light receiving portion. During a shutter close period, i.e. before a signal charge storing operation, a control voltage applied to the control gate and a reverse bias voltage applied across the n.sup.+ substrate and p.sup.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: January 5, 1988
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Atsushi Yusa, Toshimasa Akagi, Tomoji Ishii, Yoshinori Ohta