Patents by Inventor Seung Hoon Ji

Seung Hoon Ji 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).

  • Patent number: 8395729
    Abstract: An LCD device is discussed, which comprises first and second substrates confronting each other; a liquid crystal layer between the first and second substrates; and red, green, blue, and fourth color filters on the first substrate; wherein the fourth color filter is formed of any color whose transparency is better than that of at least one of the red, green, and blue color filters, and wherein an effective area of the fourth color filter is smaller than that of at least one of the red, green, and blue color filters. The LCD device can display white color with good transparency by properly adjusting the effective areas of the four color filters, whereby there is no need to modulate light for display of the white color in a backlight unit, to thereby improve luminance of light emitted from the backlight unit.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: March 12, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Sang Hun Han, Joong Min Yoon, Young Hoon Kim, Ho Chun Lee, Seung Hoon Ji
  • Publication number: 20110149213
    Abstract: An LCD device is discussed, which comprises first and second substrates confronting each other; a liquid crystal layer between the first and second substrates; and red, green, blue, and fourth color filters on the first substrate; wherein the fourth color filter is formed of any color whose transparency is better than that of at least one of the red, green, and blue color filters, and wherein an effective area of the fourth color filter is smaller than that of at least one of the red, green, and blue color filters. The LCD device can display white color with good transparency by properly adjusting the effective areas of the four color filters, whereby there is no need to modulate light for display of the white color in a backlight unit, to thereby improve luminance of light emitted from the backlight unit.
    Type: Application
    Filed: August 9, 2010
    Publication date: June 23, 2011
    Inventors: Sang Hun HAN, Joong Min Yoon, Young Hoon Kim, Ho Chun Lee, Seung Hoon Ji