Patents by Inventor Yeon Hee SON

Yeon Hee SON 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).

  • Circularly polarizing plate
    Patent number: 11985847
    Abstract: A circularly polarizing plate capable of improving the tone of reflective color sense by using a retardation film having flat dispersion characteristics; and an OLED device comprising the circularly polarizing plate.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: May 14, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Yeon Keun Lee, Hyun Hee Son, Mun Kyu Joo, Deok Hwan Kim, Dong Choon Kim
  • Acrylic fine particles and diffusing film including the same
    Patent number: 8785577
    Abstract: Acrylic fine particles formed by polymerization of a (meth)acrylate containing monomer with a cross-linking agent are disclosed. The cross-linking agent includes a first cross-linking agent having at least three (meth)acryloyloxy groups and at least one functional group —OH, —COOH, or a combination thereof, and the acrylic fine particles can have a coefficient of variation (C.V.) of about 20 to about 60%. The acrylic fine particles can have high heat resistance and solvent resistance and also enhanced compatibility with a binder and a solvent. Accordingly, the acrylic fine particles can exhibit remarkably increased dispersibility when used in a diffusing film or the like, and thus are suitable for use as a diffusing agent.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: July 22, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Ju Sung Kim, Kee Hae Kwon, Hyun Yoo Kim, Yeon Hee Son, In Hwan Oh, Yun Kyu Lee
  • Acrylic Fine Particles and Diffusing Film Including the Same
    Publication number: 20120172554
    Abstract: Acrylic fine particles formed by polymerization of a (meth)acrylate containing monomer with a cross-linking agent are disclosed. The cross-linking agent includes a first cross-linking agent having at least three (meth)acryloyloxy groups and at least one functional group —OH, —COOH, or a combination thereof, and the acrylic fine particles can have a coefficient of variation (C.V.) of about 20 to about 60%. The acrylic fine particles can have high heat resistance and solvent resistance and also enhanced compatibility with a binder and a solvent. Accordingly, the acrylic fine particles can exhibit remarkably increased dispersibility when used in a diffusing film or the like, and thus are suitable for use as a diffusing agent.
    Type: Application
    Filed: December 16, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ju Sung KIM, Kee Hae KWON, Hyun Yoo KIM, Yeon Hee SON, In Hwan OH, Yun Kyu LEE