Patents by Inventor Changwoo Ham

Changwoo Ham 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).

  • MANUFACTURING METHOD FOR THIN FILM TYPE LIGHT ABSORBING LAYER, MANUFACTURING METHOD FOR THIN FILM SOLAR CELL USING THEREOF AND THIN FILM SOLAR CELL
    Publication number: 20110120557
    Abstract: Disclosed is a manufacturing method for a thin film type light absorbing layer of a solar cell. The manufacturing method for a light absorbing layer includes: filling CIGS crystal powder in an evaporation source of a chamber; simultaneously evaporating the CIGS crystal powder; and depositing the evaporated CIGS crystal powder on a substrate to form a CIGS thin film.
    Type: Application
    Filed: June 16, 2010
    Publication date: May 26, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jeongdae SUH, Kibong Song, Changwoo Ham, Myungae Chung, Sungwon Sohn