Patents by Inventor Bu Keun OH

Bu Keun OH 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).

  • Viewer-side polarizing plate for liquid crystal display device, and liquid crystal display device comprising same
    Patent number: 11378844
    Abstract: Provided are a viewer-side polarizing plate for a liquid crystal display device, and a liquid crystal display device comprising the same, the polarizing plate comprising a polarizer and a protective film formed on a light exit surface of the polarizer, wherein the protective film includes a first primer layer, a protective film substrate, a second primer layer, and a coating layer, which are sequentially laminated on the polarizer, a first protective film satisfies a relation of Equation 1, and the protective film substrate has an in-plane phase difference of 500 nm or less at a wavelength of 550 nm in Equation 2.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: July 5, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dae Seob Shim, Hyoung Tae Lim, Seong Heun Cho, Se Hyun Park, Bu Keun Oh
  • VIEWER-SIDE POLARIZING PLATE FOR LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME
    Publication number: 20190317353
    Abstract: Provided are a viewer-side polarizing plate for a liquid crystal display device, and a liquid crystal display device comprising the same, the polarizing plate comprising a polarizer and a protective film formed on a light exit surface of the polarizer, wherein the protective film includes a first primer layer, a protective film substrate, a second primer layer, and a coating layer, which are sequentially laminated on the polarizer, a first protective film satisfies a relation of Equation 1, and the protective film substrate has an in-plane phase difference of 500 nm or less at a wavelength of 550 nm in Equation 2.
    Type: Application
    Filed: September 18, 2017
    Publication date: October 17, 2019
    Inventors: Dae Seob SHIM, Hyoung Tae LIM, Seong Heun CHO, Se Hyun PARK, Bu Keun OH