Patents by Inventor Ji Ho Youk

Ji Ho Youk 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).

  • Composition for organic polymer gate insulating layer and organic thin film transistor using the same
    Patent number: 7741635
    Abstract: Provided are a composition for an organic polymer gate insulating layer and an Organic Thin Film Transistor (OTFT) using the same. The composition includes an insulating organic polymer including at least one selected from the group consisting of polymethylmethacrylate (PMMA), polyvinylalcohol (PVA), polyvinylpyrrolidone (PVP), poly(vinyl phenol) (PVPh) and a copolymer thereof, a crosslinking monomer having two or more double bonds, and a photoinitiator. The OTFT includes a gate insulating layer of a semi-interpenetrating polymer network formed of the composition. The composition for a photoreactive organic polymer gate insulating layer has a photochemical characteristic that enables micropatterning, and can be formed into a layer having excellent chemical resistance, thermal resistance, surface characteristics and electrical characteristics.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: June 22, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Hyun Kim, Sang Chul Lim, Gi Heon Kim, Ji Ho Youk, Tae Gon Kim
  • COMPOSITION FOR ORGANIC POLYMER GATE INSULATING LAYER AND ORGANIC THIN FILM TRANSISTOR USING THE SAME
    Publication number: 20090152537
    Abstract: Provided are a composition for an organic polymer gate insulating layer and an Organic Thin Film Transistor (OTFT) using the same. The composition includes an insulating organic polymer including at least one selected from the group consisting of polymethylmethacrylate (PMMA), polyvinylalcohol (PVA), polyvinylpyrrolidone (PVP), poly(vinyl phenol) (PVPh) and a copolymer thereof, a crosslinking monomer having two or more double bonds, and a photoinitiator. The OTFT includes a gate insulating layer of a semi-interpenetrating polymer network formed of the composition. The composition for a photoreactive organic polymer gate insulating layer has a photochemical characteristic that enables micropatterning, and can be formed into a layer having excellent chemical resistance, thermal resistance, surface characteristics and electrical characteristics.
    Type: Application
    Filed: July 30, 2008
    Publication date: June 18, 2009
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong Hyun KIM, Sang Chul LIM, Gi Heon KIM, Ji Ho YOUK, Tae Gon KIM