Patents by Inventor Sunghoon RHA

Sunghoon RHA 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: 11244631
    Abstract: A display device includes a display panel including data lines, gate lines which cross the data lines, and pixels; a gamma voltage generator configured to generate first to nth gamma voltages, n being an integer; and a data driver configured to generate data voltages by selecting the gamma voltages according to input image data, and to supply the data voltages to the data lines, wherein the gamma voltage generator comprises a first voltage dividing unit configured to divide a reference voltage; a first voltage dividing circuit configured to generate the first gamma voltage by selecting voltages output from the first voltage dividing unit according to a highest gamma register value; and a second voltage dividing circuit configured to generate the second to nth gamma voltages using the reference voltage.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: February 8, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sunghoon Rha, Hyungguk Bae, Minsu Cho, Minkyu Jang
  • Patent number: 10847090
    Abstract: The electroluminescent display device according to the present disclosure comprises a plurality of pixels. Each of the plurality of pixels comprises a driving element for generating a driving current, a light emitting element for emitting light according to the driving current, an emission controlling element for controlling a flow of the driving current between the driving element and the light emitting element, and a switching circuit for setting a first gate-source voltage of the driving element corresponding to the driving current based on a first data voltage during a first period and setting a second gate-source voltage of the driving element based on a second data voltage different from the first data voltage during a second period following the first period, wherein the second gate-source voltage is different from the first gate-source voltage, and wherein during the second period the emission controlling element is turned off.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: November 24, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sunghoon Rha, Changhoon Jeon, Hyungguk Bae
  • Publication number: 20200202790
    Abstract: A display device includes a display panel including data lines, gate lines which cross the data lines, and pixels; a gamma voltage generator configured to generate first to nth gamma voltages, n being an integer; and a data driver configured to generate data voltages by selecting the gamma voltages according to input image data, and to supply the data voltages to the data lines, wherein the gamma voltage generator comprises a first voltage dividing unit configured to divide a reference voltage; a first voltage dividing circuit configured to generate the first gamma voltage by selecting voltages output from the first voltage dividing unit according to a highest gamma register value; and a second voltage dividing circuit configured to generate the second to nth gamma voltages using the reference voltage.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 25, 2020
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sunghoon RHA, Hyungguk BAE, Minsu CHO, Minkyu JANG
  • Patent number: 10366656
    Abstract: Discussed herein are an OLED display device and a method of driving the same.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: July 30, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: ChangHoon Jeon, Sunghoon Rha
  • Publication number: 20190147796
    Abstract: The electroluminescent display device according to the present disclosure comprises a plurality of pixels. Each of the plurality of pixels comprises a driving element for generating a driving current, a light emitting element for emitting light according to the driving current, an emission controlling element for controlling a flow of the driving current between the driving element and the light emitting element, and a switching circuit for setting a first gate-source voltage of the driving element corresponding to the driving current based on a first data voltage during a first period and setting a second gate-source voltage of the driving element based on a second data voltage different from the first data voltage during a second period following the first period, wherein the second gate-source voltage is different from the first gate-source voltage, and wherein during the second period the emission controlling element is turned off.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 16, 2019
    Inventors: Sunghoon RHA, Changhoon JEON, Hyungguk BAE
  • Publication number: 20170337875
    Abstract: Discussed herein are an OLED display device and a method of driving the same.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 23, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: ChangHoon JEON, Sunghoon RHA