Patents by Inventor Myeong-Kyun Kang

Myeong-Kyun Kang 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 film stack with retardance layer having in-plane retardance of greater than 2.0 microns
    Patent number: 10114162
    Abstract: Optical film stacks are disclosed. The optical film stacks can include a first reflective polarizer, a second reflective polarizer, and a retardance layer disposed between the first reflective polarizer and the second reflective polarizer.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 30, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth A. Epstein, Adam D. Haag, Seo-Hern Lee, Youn Sihn Kim, Myeong-Kyun Kang
  • Optical Film Stack
    Publication number: 20130335823
    Abstract: Optical film stacks are disclosed. The optical film stacks can include a first reflective polarizer, a second reflective polarizer, and a retardance layer disposed between the first reflective polarizer and the second reflective polarizer.
    Type: Application
    Filed: January 13, 2012
    Publication date: December 19, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth A. Epstein, Adam D. Haag, Seo-Hern Lee, Youn Sihn Kim, Myeong-Kyun Kang
  • Optical film composite for brightness enhancement including a birefringent polymer layer
    Patent number: 8547637
    Abstract: The present invention provides an optical film composite that includes a linear, reflective polarizing film; a first polymeric substrate layer having birefringence, which is placed on the reflective polarizing film; and a second polymeric substrate layer placed beneath the reflective polarizing film, wherein the optical axis of the first polymeric substrate layer is oriented with respect to the transmission axis of the reflective polarizing film to have of 0° to 25° of an angular difference between the axes. The optical film composite can be employed in LCD devices to improve optical performance.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: October 1, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Seo-Hern Lee, Myeong-Kyun Kang, Jong-Bok Choi, Yeon-Shin Kim, Byoung-Kyu Kim, Jong-Seo Lee, Chi-Deuk Kim, Dong-Won Chae, Kang-Il Seo
  • OPTICAL FILM COMPOSITE FOR BRIGHTNESS ENHANCEMENT INCLUDING A BIREFRINGENT POLYMER LAYER
    Publication number: 20090303589
    Abstract: The present invention provides an optical film composite that comprises a linear, reflective polarizing film; a first polymeric substrate layer having birefringence, which is placed on the reflective polarizing film; and a second polymeric substrate layer placed beneath the reflective polarizing film, wherein the optical axis of the first polymeric substrate layer is oriented with respect to the transmission axis of the reflective polarizing film to have of 0° to 25° of an angular difference between the axes. The optical film composite can be employed in LCD devices to improve optical performance.
    Type: Application
    Filed: December 28, 2006
    Publication date: December 10, 2009
    Inventors: Seo-Hern Lee, Myeong-Kyun Kang, Yeon-shin Kim, Byong-Kyu Kim, Jong-Seo Lee, Chi-Deuk Kim, Dong-Won Chae, Kang-Il Seo