Patents by Inventor Joon-Shik YOON

Joon-Shik YOON 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).

  • Selection circuit for inversion mode and display device having the same
    Patent number: 9865210
    Abstract: A display device according to an embodiment includes switches. Low and high voltages of a selection control signal applied to each of gate electrodes of the switches are varied according to whether one of positive and negative data voltages is applied to each of the source electrodes of the switches. As such, the swing width of the selection control signal can be maintained regardless of the positive and negative data voltages. In accordance therewith, undesired power consumption can be prevented.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 9, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Woo Seock Lee, Ho Seop Shin, Hak Su Kim, Joon Shik Yoon, Se Don Kim
  • SELECTION CIRCUIT AND DISPLAY DEVICE WITH THE SAME
    Publication number: 20160180791
    Abstract: A display device according to an embodiment includes switches. Low and high voltages of a selection control signal applied to each of gate electrodes of the switches are varied according to whether one of positive and negative data voltages is applied to each of the source electrodes of the switches. As such, the swing width of the selection control signal can be maintained regardless of the positive and negative data voltages. In accordance therewith, undesired power consumption can be prevented.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Woo Seock LEE, Ho Seop SHIN, Hak Su KIM, Joon Shik YOON, Se Don KIM
  • Liquid crystal display device and driving method of the same improving afterimage problem due to image data of black level
    Patent number: 9082365
    Abstract: A liquid crystal display device includes a liquid crystal panel; a gamma voltage supplying unit establishing a gamma voltage corresponding to each gray level according to a predetermined T-V curve; and a data driving unit changing digital image data into analog image data using the gamma voltage and outputting the analog image data to the liquid crystal panel, wherein the gamma voltage corresponding to a black level is configured to have a value within a range of 0 V to 0.005 V.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: July 14, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Joon-Shik Yoon
  • LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD OF THE SAME
    Publication number: 20120098818
    Abstract: A liquid crystal display device includes a liquid crystal panel; a gamma voltage supplying unit establishing a gamma voltage corresponding to each gray level according to a predetermined T-V curve; and a data driving unit changing digital image data into analog image data using the gamma voltage and outputting the analog image data to the liquid crystal panel, wherein the gamma voltage corresponding to a black level is configured to have a value within a range of 0 V to 0.005 V.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 26, 2012
    Inventor: Joon-Shik YOON