Patents by Inventor Gyu Wan LIM

Gyu Wan LIM 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).

  • Data driving circuit and display device including the same
    Patent number: 12125426
    Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: October 22, 2024
    Assignees: SAMSUNG DISPLAY CO., LTD, KOREAN ADVANCE INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyung Gun Ma, Gyu Wan Lim, Gyeong Gu Kang, Hyun Sik Kim, Keum Dong Jung, Moon Jae Jeong
  • Output buffer, data driver, and display device having the same
    Patent number: 11837132
    Abstract: An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: December 5, 2023
    Assignees: Samsung Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Seong Joo Lee, Seok Tae Koh, Gyeong Gu Kang, Oh Jo Kwon, Hyun Sik Kim, Gyu Wan Lim, Keum Dong Jung
  • DATA DRIVING CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20230326384
    Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 12, 2023
    Inventors: Hyung Gun MA, Gyu Wan LIM, Gyeong Gu KANG, Hyun Sik KIM, Keum Dong JUNG, Moon Jae JEONG
  • DATA DRIVING CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20230260441
    Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
    Type: Application
    Filed: November 11, 2022
    Publication date: August 17, 2023
    Inventors: Hyung Gun Ma, Gyu Wan Lim, Gyeong Gu Kang, Hyun Sik Kim, Keum Dong Jung, Moon Jae Jeong
  • Data driving circuit and display device including the same
    Patent number: 11721265
    Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: August 8, 2023
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREAN ADVANCE INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyung Gun Ma, Gyu Wan Lim, Gyeong Gu Kang, Hyun Sik Kim, Keum Dong Jung, Moon Jae Jeong
  • OUTPUT BUFFER, DATA DRIVER, AND DISPLAY DEVICE HAVING THE SAME
    Publication number: 20220335871
    Abstract: An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.
    Type: Application
    Filed: October 13, 2021
    Publication date: October 20, 2022
    Inventors: Seong Joo LEE, Seok Tae KOH, Gyeong Gu KANG, Oh Jo KWON, Hyun Sik KIM, Gyu Wan LIM, Keum Dong JUNG