Patents by Inventor Tanaka Hideo

Tanaka Hideo 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: 7511781
    Abstract: A semiconductor film is formed in a gap between a source electrode and a drain electrode of a thin film transistor in an active-matrix type liquid crystal display device. A metal film for a gate electrode is formed on said semiconductor film via a gate insulating film. A photo-resist film, having a thick portion in region including the gap and having an opening portion in contact-hole forming region, is formed on the metal film. A contact-hole is formed in the gate insulating film by using the organic material film as a mask. The organic material film is left on the region including the gap. A gate electrode is formed on the region including the gap by etching the first metal film by using the remained organic material film as a mask. An organic material film, having projections and depressions, is formed on a reflective region except the contact-hole forming region.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 31, 2009
    Assignee: TPO Hong Kong Holding Limited
    Inventor: Tanaka Hideo