Patents by Inventor Sangbeum Lee

Sangbeum Lee 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).

  • Optical sheet
    Patent number: 8908278
    Abstract: The present invention relates to a composite optical sheet, characterized in that two or more optical sheets regularly arranged with micro lenses each having a lens pitch of 1˜30 ?m are stacked to prevent the moire phenomenon, and brightness-improving sheets with different sizes of lenses are formed to maximize the brightness.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: December 9, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Suhyeon Cho, Sangbeum Lee, Hyunjoon Kim, Wooyoung Chang
  • OPTICAL SHEET
    Publication number: 20120212828
    Abstract: The present invention relates to a composite optical sheet, characterized in that two or more optical sheets regularly arranged with micro lenses each having a lens pitch of 1˜30 ?m are stacked to prevent the moire phenomenon, and brightness-improving sheets with different sizes of lenses are formed to maximize the brightness.
    Type: Application
    Filed: August 12, 2010
    Publication date: August 23, 2012
    Applicant: LG Innotek Co., Ltd.
    Inventors: Suhyeon Cho, Sangbeum Lee, Hyunjoon Kim, Wooyoung Chang