Patents by Inventor Jea-Chul Jung

Jea-Chul Jung 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).

  • Broadband reflection type brightness enhancement polarizer and liquid crystal display having the same
    Patent number: 7510748
    Abstract: Disclosed is a broadband reflection type brightness enhancement polarizer, which includes a cholesteric liquid crystal film laminate having a broadband selective reflecting wavelength range in which a plurality of cholesteric liquid crystal films having selective reflecting wavelength ranges different from each other by having different mixture ratios of a curable nematic liquid crystal compound expressed by the chemical formula 1 and a curable chiral compound expressed by the chemical formula 2 are laminated; and a film having ΒΌ? phase difference laminated on one surface of the cholesteric liquid crystal film laminate. This polarizer has wide selective reflecting wavelength ranges of the cholesteric liquid crystal films composing the polarizer, so the entire visible ray range can be covered just by laminating several cholesteric liquid crystal films.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: March 31, 2009
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Sung-Tae Kim, Ki-Cheol Yoon, Keon-Il Kim, Nam Ki, Hunkyun Pak, Jea-Chul Jung