Patents by Inventor JONG-DEUK MOON

JONG-DEUK MOON 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: 11276357
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: March 15, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Publication number: 20210134235
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Inventors: JAHUN KOO, JINHO PARK, JONG DEUK MOON, SU-HAN WOO, KYUNG-HUN LEE, KYUNG-UK CHOI
  • Patent number: 10909935
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Publication number: 20200066215
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Application
    Filed: July 9, 2019
    Publication date: February 27, 2020
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Patent number: 9865194
    Abstract: A display system includes a graphic processor and a display apparatus. The graphic processor supplies a first image signal and a first synchronization signal. The display apparatus is driven in a normal mode in which a first image is displayed, during a first period, based on the first image signal and the first synchronization signal provided from the graphic processor and in a panel self refresh (PSR) mode in which a second image is displayed based on a second image signal stored in a frame buffer of the display apparatus and a second synchronization signal generated in the display apparatus, and transmits the second synchronization signal of the PSR mode to the graphic processor when a driving mode of the display apparatus is changed from the PSR mode to the normal mode. The graphic processor is configured to generate the first synchronization signal synchronized with the second synchronization signal.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 9, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ja-Hun Koo, Jong-Deuk Moon, Kyung-Hun Lee
  • Publication number: 20160372077
    Abstract: A display system includes a graphic processor and a display apparatus. The graphic processor supplies a first image signal and a first synchronization signal. The display apparatus is driven in a normal mode in which a first image is displayed, during a first period, based on the first image signal and the first synchronization signal provided from the graphic processor and in a panel self refresh (PSR) mode in which a second image is displayed based on a second image signal stored in a frame buffer of the display apparatus and a second synchronization signal generated in the display apparatus, and transmits the second synchronization signal of the PSR mode to the graphic processor when a driving mode of the display apparatus is changed from the PSR mode to the normal mode. The graphic processor is configured to generate the first synchronization signal synchronized with the second synchronization signal.
    Type: Application
    Filed: January 8, 2016
    Publication date: December 22, 2016
    Inventors: JA-HUN KOO, JONG-DEUK MOON, KYUNG-HUN LEE