Patents by Inventor Yonghan Jo

Yonghan Jo 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).

  • OLED display device with variable gamma reference voltage
    Patent number: 9824634
    Abstract: An OLED display device includes an OLED display panel on which subpixels are disposed, a gamma reference voltage supply circuit supplying gamma reference voltages that are variable during driving and when sensing a threshold voltage, and a data driver supplying data voltages based on the gamma reference voltages to data lines. The data driver senses a voltage of a sensing node within each of the subpixels in sensing mode. A timing controller controls the data driver, and performs a compensation process based on the voltage sensed by the data driver.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 21, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Koichi Miwa, Seong-Eok Han, Junghyun Lee, Yonghan Jo
  • OLED Display Device
    Publication number: 20160189623
    Abstract: An OLED display device includes an OLED display panel on which subpixels are disposed, a gamma reference voltage supply circuit supplying gamma reference voltages that are variable during driving and when sensing a threshold voltage, and a data driver supplying data voltages based on the gamma reference voltages to data lines. The data driver senses a voltage of a sensing node within each of the subpixels in sensing mode. A timing controller controls the data driver, and performs a compensation process based on the voltage sensed by the data driver.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 30, 2016
    Inventors: Koichi Miwa, Seong-Eok Han, Junghyun Lee, Yonghan Jo