Patents by Inventor Hai Sung Park

Hai Sung Park 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: 6999152
    Abstract: A method of fabricating a liquid crystal display using a negative photo-resist. A passivation layer covering a thin film transistor, a data line, and a gate line is formed on a transparent substrate. The passivation layer is patterned to define a contact hole that exposes a drain electrode. A transparent conductive film in electrical contact with the drain electrode via the contact hole is then formed on the passivation layer. A negative-type photoresist is coated on the transparent conductive film. The transparent conductive film is then exposed with an image of the desired pixel electrode. The negative-type photoresist is then developed to expose portions of the transparent conductive film over a data line, a gate line, and the area of the thin film transistor area. The exposed transparent conductive film is then etched.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: February 14, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Dug jin Park, Hai Sung Park, Byung Chul Ahn
  • Publication number: 20010015789
    Abstract: A method of fabricating a liquid crystal display using a negative photo-resist. A passivation layer covering a thin film transistor, a data line, and a gate line is formed on a transparent substrate. The passivation layer is patterned to define a contact hole that exposes a drain electrode. A transparent conductive film in electrical contact with the drain electrode via the contact hole is then formed on the passivation layer. A negative-type photoresist is coated on the transparent conductive film. The transparent conductive film is then exposed with an image of the desired pixel electrode. The negative-type photoresist is then developed to expose portions of the transparent conductive film over a data line, a gate line, and the area of the thin film transistor area. The exposed transparent conductive film is then etched.
    Type: Application
    Filed: February 21, 2001
    Publication date: August 23, 2001
    Inventors: Dug Jin Park, Hai Sung Park, Byung Chul Ahn