Patents by Inventor Kum-Chul Oh

Kum-Chul Oh 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).

  • Method for fabricating liquid crystal display device
    Patent number: 7358195
    Abstract: In etching a metal line formed as a dual layer of aluminum alloy and molybdenum, the metal line consisting of the dual layer of aluminum alloy and molybdenum is etched through one-time wet etching by applying the etchant including HNO3, HClO4, a Ferric compound (Fe3+), and a Flouro compound (F?), the process can be reduced and a metal line having a good profile can be formed.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: April 15, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Soon-Ho Choi, Hyuk-Cheol Son, Kum-Chul Oh, Seung-Hwan Chon, Young-Chul Park
  • Method for fabricating liquid crystal display device
    Publication number: 20050133758
    Abstract: In etching a metal line formed as a dual layer of aluminum alloy and molybdenum, the metal line consisting of the dual layer of aluminum alloy and molybdenum is etched through one-time wet etching by applying the etchant including HNO3, HClO4, a Ferric compound (Fe3+), and a Flouro compound (F?), the process can be reduced and a metal line having a good profile can be formed.
    Type: Application
    Filed: September 28, 2004
    Publication date: June 23, 2005
    Inventors: Soon-Ho Choi, Hyuk-Cheol Son, Kum-Chul Oh, Seung-Hwan Chon, Young-Chul Park