Patents by Inventor Ung-Gyu Min

Ung-Gyu Min 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: 11640792
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: May 2, 2023
    Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Publication number: 20220223108
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 14, 2022
    Inventors: Ung-Gyu MIN, Oh-Kyong Kwon
  • Patent number: 11315493
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: January 24, 2021
    Date of Patent: April 26, 2022
    Assignees: IUCF-HYU Industry-University Cooperation Foundation Hanyai, Samsung Display Co., Ltd.
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Publication number: 20210142730
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: January 24, 2021
    Publication date: May 13, 2021
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 10902784
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: January 26, 2021
    Assignees: Samsung Display Co., Ltd., IUCF-HYU Industry-University Cooperation Foundation Hanyang University
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Publication number: 20200043416
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventors: Ung-Gyu MIN, Oh-Kyoung KWON
  • Patent number: 10446084
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 15, 2019
    Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Ung-Gyu Min, Oh-Kyoung Kwon
  • Publication number: 20190122614
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Inventors: Ung-Gyu MIN, Oh-Kyoung KWON
  • Patent number: 10176762
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: January 8, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 9972237
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: May 15, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
  • Patent number: 9928772
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
  • Publication number: 20180082640
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 9852694
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 26, 2017
    Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 9847063
    Abstract: A liquid crystal display includes: a display panel; a signal controller configured to receive an input image signal and an input control signal, output an output image signal and an output control signal, and determine a charge sharing between two or more data lines having voltages in the same polarity; and a data driver configured to convert, based on the output control signal, the image signal into data voltages to be supplied to the data lines connected to the pixels, the data voltages having positive levels and negative levels. The data driver is further configured to perform a first charge sharing by short-circuiting first and second data lines that are adjacent to each other, and a second charge sharing by short-circuiting third and fourth data lines having data voltages in the same polarity, wherein the first charge sharing and the second charge sharing may not temporally overlap with each other.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: December 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su Hyeong Park, Ung Gyu Min, Ji Myoung Seo, Cheol Woo Park, Ho Yong Jung
  • Patent number: 9613554
    Abstract: A driving method of a display device includes: determining each of a plurality of pixel rows of the display device as one of a motion picture display pixel row and a still image display pixel row by comparing image data of each of the pixel rows in a current frame and in a previous frame; and driving the motion picture display pixel row with a motion picture frequency and driving the still image display pixel row with a still image display frequency, which is lower than or equal to the motion picture frequency, where a plurality of still image display pixel rows are driven with at least two still image display frequencies.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 4, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Gwang Jang, Ung Gyu Min, Seok Ha Hong, Hyun Sik Hwang, Byung Sun Kim, Sang Mi Kim, Bong Hyun You, Ji Myoung Seo
  • Publication number: 20160314744
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Inventors: Ung-Gyu MIN, Oh-Kyong KWON
  • Publication number: 20160275852
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 22, 2016
    Inventors: Seok Ha HONG, Dae-Gwang JANG, Byung Sun KIM, Sang Mi KIM, Ung Gyu MIN, Hyun Sik HWANG, Gi Geun KIM, Kyoung Won LEE
  • Patent number: 9390656
    Abstract: A display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each display pixel includes a driving transistor comprising a first terminal, a second terminal, and a third terminal, a capacitor connected to the first terminal of the driving transistor, a first switching transistor connected to the data line and the first terminal of the driving transistor, a light-emitting element connected to the third terminal of the driving transistor configured to emit light, a second switching transistor connected between the sensing line and the light-emitting element, and a third switching transistor connected between the third terminal of the driving transistor and the light-emitting element.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: July 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 9293106
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: March 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
  • Patent number: 9253479
    Abstract: To display at least one three-dimensional (3D) image in a two-dimensional (2D) image display area, a method and apparatus is provided for distinguishing a 3D image display area, in which the at least one 3D image is displayed, from the 2D image display area, and displaying a 2D image and a 3D image in the 2D image display area and the 3D image display area, respectively, thereby improving display resolution.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: February 2, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Young Yun, Ung-Gyu Min, Myung-Hwan Kim