Patents by Inventor Wong-bong Choi

Wong-bong Choi 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).

  • Secondary electron amplification structure employing carbon nanotube, and plasma display panel and back light using the same
    Patent number: 6346775
    Abstract: A secondary electron amplification structure employing carbon nanotube and a plasma display panel and back light using the same are provided. The secondary electron amplification structure is formed by stacking a MgO film, a film of a fluoride such as MgF2, CaF2 or LiF, or a film of an oxide such as Al2O3, ZnO, CaO, SrO, SiO2 or La2O3 on a carbon nanotube (CNT), which functions to increase the secondary electron emission coefficient caused by electrons or ions.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: February 12, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Won-tae Lee, Wong-bong Choi, In-taek Han, Jeong-hee Lee, Se-gi Yu