Patents by Inventor MunJun Lee

MunJun Lee 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: 10891901
    Abstract: Disclosed is an organic light emitting display apparatus. The organic light emitting display apparatus outputs black gate pulses for a black image and sensing gate pulses for sensing in a vertical blank period and differently sets timings, at which the sensing gate pulses are output after the black gate pulses are output, for each gate line.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: January 12, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: GeunWoo Lee, YongKyu Park, MunJun Lee
  • Publication number: 20200082759
    Abstract: Disclosed is an organic light emitting display apparatus. The organic light emitting display apparatus outputs black gate pulses for a black image and sensing gate pulses for sensing in a vertical blank period and differently sets timings, at which the sensing gate pulses are output after the black gate pulses are output, for each gate line.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 12, 2020
    Inventors: GeunWoo LEE, YongKyu PARK, MunJun LEE
  • Patent number: 9478197
    Abstract: An organic light emitting display and a method for driving the same are disclosed. The organic light emitting display includes a display panel, a data driver supplying a data signal to the display panel, a memory which is positioned inside or outside the data driver and includes at least two banks, and a sensing circuit unit which measures a threshold voltage of at least one driving transistor included in the display panel and provides compensation data. The data driver separately writes and reads previous compensation data and new compensation data provided by the sensing circuit unit in the at least two banks of the memory.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: October 25, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yirang Lim, Sangho Yu, Munjun Lee
  • Patent number: 9378673
    Abstract: An organic light emitting display device, can include a panel, a driving unit driving the panel, a timing controller controlling the driving unit, a power supply supplying power to the panel, a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected currents, and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 28, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Dongkyoung Oh, Sangho Yu, Hyunson Chon, Myungjin Pyeon, Youngin Kim, Munjun Lee
  • Patent number: 9093025
    Abstract: An organic light emitting display device includes: an APL calculation unit; a current value calculation unit output a first result value or output a second result value; a peak luminance controller configured to output a first luminance control signal based on a first gamma conversion value when receiving the first result value from the current value calculation unit and output a second luminance control signal based on a second gamma conversion value when receiving the second value from the current value calculation unit; a programmable gamma unit configured to output a gamma voltage; and a data driver configured to generate a data signal and supply the generated data signal to a display panel.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: July 28, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Munjun Lee, Hyungjung Kim
  • Patent number: 9047823
    Abstract: An organic light emitting display and a method of erasing an image sticking thereof are provided. In the image sticking erasing method, a panel driving circuit is driven by a logic power voltage during a power-off delay time to discharge pixels.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 2, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Joonyoung Kim, Hyunki Lee, Munjun Lee
  • Publication number: 20150115799
    Abstract: An organic light emitting display device, can include a panel, a driving unit driving the panel, a timing controller controlling the driving unit, a power supply supplying power to the panel, a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected currents, and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.
    Type: Application
    Filed: January 7, 2015
    Publication date: April 30, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Dongkyoung OH, Sangho YU, Hyunson CHON, Myungjin PYEON, Youngin KIM, Munjun LEE
  • Publication number: 20150049075
    Abstract: An organic light emitting display and a method for driving the same are disclosed. The organic light emitting display includes a display panel, a data driver supplying a data signal to the display panel, a memory which is positioned inside or outside the data driver and includes at least two banks, and a sensing circuit unit which measures a threshold voltage of at least one driving transistor included in the display panel and provides compensation data. The data driver separately writes and reads previous compensation data and new compensation data provided by the sensing circuit unit in the at least two banks of the memory.
    Type: Application
    Filed: May 12, 2014
    Publication date: February 19, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Yirang Lim, Sangho Yu, Munjun Lee
  • Patent number: 8946994
    Abstract: The present invention has been made in an effort to provide an organic light emitting display device comprising a panel; a power supply supplying power to the panel; a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected current; and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: February 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Dongkyoung Oh, Sangho Yu, Hyunson Chon Chon, Myungjin Pyeon, Youngin Kim, Munjun Lee
  • Patent number: 8896641
    Abstract: An organic light emitting display device includes: a display panel including red, green, blue, and white (RGBW) subpixels; a first data conversion unit configured to convert red, green, and blue (RGB) data signals into RGBW data signals; an average picture level calculation unit configured to calculate an average picture level (APL) for the RGB data signals; a peak luminance controller configured to control luminance of at least one frame by using the APL and a look-up table; and a data compensation unit configured to perform a compensation operation on at least one of the RGB data signals in response to color coordinates of white (W) data signals among the RGBW data signals output from the first data conversion unit being different from a target value.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: November 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hyungjung Kim, DongKyoung Oh, SangHo Yu, HyunKi Lee, MunJun Lee
  • Publication number: 20140092144
    Abstract: An organic light emitting display and a method of erasing an image sticking thereof are provided. In the image sticking erasing method, a panel driving circuit is driven by a logic power voltage during a power-off delay time to discharge pixels.
    Type: Application
    Filed: December 21, 2012
    Publication date: April 3, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Joonyoung KIM, Hyunki LEE, Munjun LEE
  • Publication number: 20140084792
    Abstract: The present invention has been made in an effort to provide an organic light emitting display device comprising a panel; a power supply supplying power to the panel; a current detection unit detecting a current flowing through power line wiring of the panel and outputting the detected current; and a power controller comparing the detected current with a current value configured internally and outputting a shutdown signal which turns off the power supply if the detected current exceeds the predetermined current value.
    Type: Application
    Filed: December 18, 2012
    Publication date: March 27, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Dongkyoung OH, Sangho YU, Hyunson CHON CHON, Myungjin PYEON, Youngin KIM, Munjun LEE
  • Publication number: 20120306947
    Abstract: An organic light emitting display device includes: a display panel including red, green, blue, and white (RGBW) subpixels; a first data conversion unit configured to convert red, green, and blue (RGB) data signals into RGBW data signals; an average picture level calculation unit configured to calculate an average picture level (APL) for the RGB data signals; a peak luminance controller configured to control luminance of at least one frame by using the APL and a look-up table; and a data compensation unit configured to perform a compensation operation on at least one of the RGB data signals in response to color coordinates of white (W) data signals among the RGBW data signals output from the first data conversion unit being different from a target value.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Inventors: Hyungjung KIM, Dong Kyoung Oh, SangHo Yu, HyunKi Lee, MunJun Lee