Patents by Inventor Yamamoto Hitoshi

Yamamoto Hitoshi 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 EL device with light absorbing piece and method for manufacturing the same
    Patent number: 6683410
    Abstract: The present invention discloses an organic EL device, including first electrodes formed on a transparent substrate and spaced apart from each other in parallel, a light absorbing layer having an opening portion for exposing a portion of the first electrodes and at least one light absorbing piece arranged in the opening portion, light-emitting layers formed on the exposed portion of the first electrodes to cover the opening portion of the light absorbing layer, and second electrodes formed on the light-emitting layers in a perpendicular direction to the first electrodes.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: January 27, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Yamamoto Hitoshi
  • Organic EL device of higher brightness with lower power consumption and a method for manufacturing the same
    Publication number: 20020057053
    Abstract: The present invention discloses an organic EL device, including first electrodes formed on a transparent substrate and spaced apart from each other in parallel, a light absorbing layer having an opening portion for exposing a portion of the first electrodes and at least one light absorbing piece arranged in the opening portion, light-emitting layers formed on the exposed portion of the first electrodes to cover the opening portion of the light absorbing layer, and second electrodes formed on the light-emitting layers in a perpendicular direction to the first electrodes.
    Type: Application
    Filed: September 10, 2001
    Publication date: May 16, 2002
    Inventor: Yamamoto Hitoshi