Patents by Inventor Su Kyong LEE

Su Kyong 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).

  • Prism sheet, backlight unit including the same, and optical display apparatus including the same
    Patent number: 8915604
    Abstract: A prism sheet includes a base film having one flat surface and an optical refractive section having a plurality of prisms arranged along a first direction to constitute first and second prism parts. The optical refractive section is integrally formed with another surface of the base film that is opposite to the flat surface of the base film, and each of the prisms has a predetermined cross-sectional shape. The first prism part includes a first prism of the plurality of prisms, which first prism has a constant height along a second direction that intersects the first direction. The second prism part includes a second prism of the plurality of prisms, which second prism has a variable height in the second direction, and a maximum value of the variable height of the second prism is higher than the constant height of the first prism.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 23, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Mi Jeong Choi, Kyoung Gon Park, Su Kyong Lee
  • PRISM SHEET, BACKLIGHT UNIT INCLUDING THE SAME, AND OPTICAL DISPLAY APPARATUS INCLUDING THE SAME
    Publication number: 20130170188
    Abstract: A prism sheet includes a base film having one flat surface and an optical refractive section having a plurality of prisms arranged along a first direction to constitute first and second prism parts. The optical refractive section is integrally formed with another surface of the base film that is opposite to the flat surface of the base film, and each of the prisms has a predetermined cross-sectional shape. The first prism part includes a first prism of the plurality of prisms, which first prism has a constant height along a second direction that intersects the first direction. The second prism part includes a second prism of the plurality of prisms, which second prism has a variable height in the second direction, and a maximum value of the variable height of the second prism is higher than the constant height of the first prism.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 4, 2013
    Inventors: Mi Jeong CHOI, Kyoung Gon PARK, Su Kyong LEE
  • OPTICAL FILM AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20130155517
    Abstract: An optical film including a base film, a light spreading pattern on a first surface of the base film, a surface of the light spreading pattern facing away from the base film being an undulating surface, and a light collecting pattern on a second surface of the base film.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 20, 2013
    Inventors: Kyoung Gon PARK, Ki Yong KIM, Su Kyong LEE, Mi Jeong CHOI