Patents by Inventor Yang-Hyun Yoo

Yang-Hyun Yoo 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).

  • Positive photoresist composition
    Patent number: 7514203
    Abstract: Disclosed is a positive photoresist composition used for a liquid crystal display. The positive photoresist composition of the present invention includes 3 to 50% by weight of binder resin having a certain structure, 2 to 40% by weight of a photoactive compound and 10 to 94% by weight of an organic solvent. The positive photoresist composition according to the present invention may be useful to form a pattern for an organic insulator of a liquid crystal display, metal patterning, a bump, hole drilling and UV overcoat since it has good basic physical properties such as UV transmittance, film retention, pattern stability, chemical resistance and so on, as well as an excellent heat resistance.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: April 7, 2009
    Assignee: Samyangems Co., Ltd.
    Inventors: Bong-Seok Moon, Hyo-Jeong Kim, Jin-Gon Kim, Yang-Hyun Yoo, Min-Ji Kim, Mi-Kyeong Jeong, Kwon-Yil Yoo, Nak-Chil Jung, Seon-Ho Kim
  • Positive Photoresist Composition
    Publication number: 20080166656
    Abstract: Disclosed is a positive photoresist composition used for a liquid crystal display. The positive photoresist composition of the present invention includes 3 to 50% by weight of binder resin having a certain structure, 2 to 40% by weight of a photoactive compound and 10 to 94% by weight of an organic solvent. The positive photoresist composition according to the present invention may be useful to form a pattern for an organic insulator of a liquid crystal display, metal patterning, a bump, hole drilling and UV overcoat since it has good basic physical properties such as UV transmittance, film retention, pattern stability, chemical resistance and so on, as well as an excellent heat resistance.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 10, 2008
    Inventors: Bong-Seok Moon, Hyo-Jeong Kim, Jin-Gon Kim, Yang-Hyun Yoo, Min-Ji Kim, Mi-Kyeong Jeong, Kwon-Yil Yoo, Nak-Chil Jung, Seon-Ho Kim