Patents by Inventor Hyeonjung Yoo

Hyeonjung 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).

  • Patent number: 8493648
    Abstract: Provided are a method of fabricating an electrophoretic ink, the electrophoretic ink formed using the method, and an electrophoretic display having the same. The method of fabricating an electrophoretic ink includes dispersing pigment particles into a dielectric fluid; adding at least one monomer and an initiator into the dielectric fluid; and forming polymeric membranes surrounding the pigment particles in the dielectric fluid. Since the pigment particle surrounded by the polymeric membrane and the dielectric fluid in which the pigment particle is dispersed can be utilized as the electrophoretic ink as they are without a follow-up cleaning process, the method of fabricating the electrophoretic ink is simplified.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: July 23, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chul Am Kim, Hyeonjung Yoo, Kyung Soo Suh, Seung Youl Kang
  • Publication number: 20110122480
    Abstract: Provided are a method of fabricating an electrophoretic ink, the electrophoretic ink formed using the method, and an electrophoretic display having the same. The method of fabricating the electrophoretic ink includes dispersing a pigment particle into a dielectric fluid for the electrophoretic ink and adding at least monomer and initiator to the dielectric fluid to form a polymeric membrane surrounding the pigment particle. Since the pigment particle surrounded by the polymeric membrane and the dielectric fluid in which the pigment particle is dispersed can be utilized as the electrophoretic ink as they are, the method of fabricating the electrophoretic ink is simplified.
    Type: Application
    Filed: April 22, 2010
    Publication date: May 26, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATONS RESEARCH INSTITUTE
    Inventors: Chul Am KIM, Hyeonjung Yoo, Kyung Soo Suh, Seung Youl Kang