Patents by Inventor Yung-Bae Chai

Yung-Bae Chai 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).

  • Publication number: 20060177761
    Abstract: The present invention relates to a thinner composition for removing resist used in TFT-LCD manufacturing processes, and more particularly to a thinner composition for removing resist that comprises: a) 0.1 to 5 wt % of an inorganic alkali compound; b) 0.1 to 5 wt % ofan organic amine; c) 0.1 to 30 wt % of an organic solvent; d) 0.01 to 5 wt % of a surfactant comprising an ionic surfactant and a non-ionic surfaciant in the weight ration of 1:5 to 1:25; and e) 60 to 99 wt % of water. The thinner composition for removing resist of the present invention has good efficiency of removing unwanted resist film constituents formed on the edge of the resist film or at the back of the substrate in TFR-LCD device and semiconductor device manufacturing processes. Also, it does not have the problem of equipment corrosion.
    Type: Application
    Filed: April 11, 2006
    Publication date: August 10, 2006
    Inventors: Yung-Bae Chai, Si-Myung Choi, Jae-Sung Ro, Jung-Sun Choi
  • Patent number: 7063930
    Abstract: The present invention relates to a thinner composition for removing resist used in TFT-LCD manufacturing processes, and more particularly to a thinner composition for removing resist that comprises: a) 0.1 to 5 wt % of an inorganic alkali compound; b) 0.1 to 5 wt % of an organic amine; c) 0.1 to 30 wt % of an organic solvent; d) 0.01 to 5 wt % of a surfactant comprising an ionic surfactant and a non-ionic surfactant in the weight ration of 1:5 to 1:25; and e) 60 to 99 wt % of water. The thinner composition for removing resist of the present invention has good efficiency of removing unwanted resist film constituents formed on the edge of the resist film or at the back of the substrate in TFT-LCD device and semiconductor device manufacturing processes. Also, it does not have the problem of equipment corrosion.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: June 20, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yung-Bae Chai, Si-Myung Choi, Jae-Sung Ro, Jung-Sun Choi
  • Publication number: 20050058953
    Abstract: The present invention relates to a thinner composition for removing resist used in TFT-LCD manufacturing processes, and more particularly to a thinner composition for removing resist that comprises: a) 0.1 to 5 wt % of an inorganic alkali compound; b) 0.1 to 5 wt % of an organic amine; c) 0.1 to 30 wt % of an organic solvent; d) 0.01 to 5 wt % of a surfactant comprising an ionic surfactant and a non-ionic surfactant in the weight ration of 1:5 to 1:25; and e) 60 to 99 wt % of water. The thinner composition for removing resist of the present invention has good efficiency of removing unwanted resist film constituents formed on the edge of the resist film or at the back of the substrate in TFT-LCD device and semiconductor device manufacturing processes. Also, it does not have the problem of equipment corrosion.
    Type: Application
    Filed: November 13, 2002
    Publication date: March 17, 2005
    Inventors: Yung-bae Chai, Si-Myung Choi, Jae-Sung Ro, Jung-Sun Choi