Patents by Inventor Ki-Ho KONG

Ki-Ho KONG 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).

  • Publication number: 20230078111
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Application
    Filed: November 22, 2022
    Publication date: March 16, 2023
    Inventors: JEE HWAL KIM, Ki Ho KONG, IN Suk KIM
  • Patent number: 11538433
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jee Hwal Kim, Ki Ho Kong, In Suk Kim
  • Patent number: 11217199
    Abstract: Disclosed are a display driving circuit and a display apparatus including the same. A display driving circuit includes a first amplifier configured to drive a first data line of a display panel based on first pixel data and a second amplifier configured to drive a second data line of the display panel based on second pixel data, wherein, when a first data difference between the first pixel data and the second pixel data is greater than or equal to a data value indicating one grayscale and is less than or equal to a first threshold value, the second amplifier is turned off, and the first amplifier is configured to drive the first data line and the second data line based on the first pixel data and the second pixel data.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: January 4, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho Kong, Taek-su Kwon, Jong-hyun Kim, Jee-hwal Kim, Jun-ho Park, Hong-keun Yune
  • Publication number: 20210358448
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 18, 2021
    Inventors: Jee Hwal Kim, Ki Ho Kong, In Suk Kim
  • Patent number: 11127365
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jee Hwal Kim, Ki Ho Kong, In Suk Kim
  • Publication number: 20200349901
    Abstract: Disclosed are a display driving circuit and a display apparatus including the same. A display driving circuit includes a first amplifier configured to drive a first data line of a display panel based on first pixel data and a second amplifier configured to drive a second data line of the display panel based on second pixel data, wherein, when a first data difference between the first pixel data and the second pixel data is greater than or equal to a data value indicating one grayscale and is less than or equal to a first threshold value, the second amplifier is turned off, and the first amplifier is configured to drive the first data line and the second data line based on the first pixel data and the second pixel data.
    Type: Application
    Filed: July 16, 2020
    Publication date: November 5, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho KONG, Taek-su KWON, Jong-hyun KIM, Jee-hwal KIM, Jun-ho PARK, Hong-keun YUNE
  • Patent number: 10755662
    Abstract: Disclosed are a display driving circuit and a display apparatus including the same. A display driving circuit includes a first amplifier configured to drive a first data line of a display panel based on first pixel data and a second amplifier configured to drive a second data line of the display panel based on second pixel data, wherein, when a first data difference between the first pixel data and the second pixel data is greater than or equal to a data value indicating one grayscale and is less than or equal to a first threshold value, the second amplifier is turned off, and the first amplifier is configured to drive the first data line and the second data line based on the first pixel data and the second pixel data.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: August 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho Kong, Taek-su Kwon, Jong-hyun Kim, Jee-hwal Kim, Jun-ho Park, Hong-keun Yune
  • Patent number: 10706901
    Abstract: An integrated circuit includes a data processing circuit, an electrostatic discharge (ESD) protection circuit which is connected between a voltage rail and a ground rail and protects the data processing circuit from an ESD event on the voltage rail, and a switch circuit for controlling a connection between the voltage rail and the data processing circuit in response to a control signal.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: July 7, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Ho Kong, Chang Hee Shin, Hong Keun Yune, Jae Hyok Ko
  • Patent number: 10482804
    Abstract: A source driver for a display device includes a gamma voltage generation circuit, first through (2m)-th data driving circuits, and a switch circuit. The gamma voltage generation circuit generates R, G and B gamma voltages. The (2k?1)-th data driving circuits consecutively receive red image data and blue image data, and consecutively generate a R driving voltage and a B driving voltage using the R gamma voltages and B gamma voltages, respectively, during one horizontal period. The (2k)-th data driving circuits consecutively receive first green image data and second green image data, and consecutively generate a G1 driving voltage and a G2 driving voltage, respectively, using the G gamma voltages during the one horizontal period. The switch circuit outputs the R, B, G1, and G2 driving voltages through different data lines from each other based on a first selection signal and a second selection signal.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: November 19, 2019
    Assignee: SAMSUNG ELECTRONIC CO., LTD.
    Inventors: Ki-Ho Kong, Dong-Wook Suh, Hee-Jong Kim, Chang-Hee Shin, Hyeok-Chul Kwon, Hong-Keun Yune
  • Patent number: 10475406
    Abstract: A display device including a display panel and a driving circuit configured to drive the display panel may be provided. The display panel includes a plurality of gate lines, a plurality of data lines and a plurality of sub pixels connected to the plurality of gate lines and the plurality of data lines, respectively. The display panel has a zigzag connection structure in which RG sub pixel pairs included in a first odd-numbered row and RG sub pixel pairs included in a first even-numbered row adjacent to the first odd-numbered row are alternately connected to a first common gate line, and BG sub pixel pairs included in a second odd-numbered row and BG sub pixel pairs included in a second even-numbered row adjacent to the second odd-numbered row are alternately connected to a second common gate line.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: November 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Pyo Kim, Ki-Ho Kong, Young-Bae Moon
  • Publication number: 20190340996
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Application
    Filed: November 26, 2018
    Publication date: November 7, 2019
    Inventors: Jee Hwal Kim, Ki Ho Kong, In Suk Kim
  • Patent number: 10269288
    Abstract: A display device includes an image processor configured to invert a switch signal at a change of frames, and output, based on the switch signal, one among odd column pixel data and even column pixel data among first through (2M)-th column pixel data included in a frame data, as a half frame data, a display panel including first through M-th odd column pixels coupled to first through M-th odd column lines, respectively, and first through M-th even column pixels coupled to first through M-th even column lines, respectively, and a driving circuit including first through M-th driving units including a K-th driving unit configured to drive, based on the switch signal, one among K-th odd column pixels through a K-th odd column line and K-th even column pixels through a K-th even column line, using a K-th column pixel data included in the half frame data.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Pyo Kim, Jin-Hong Hwang, Ki-Ho Kong, Yang-Hyo Kim, Eui-Hyuk Jeong
  • Patent number: 10199005
    Abstract: A display driving circuit and a display device including the display driving circuit are disclosed. The display driving circuit includes: a data driver including a first channel amplifier operating based on first pixel data and a second channel amplifier operating based on second pixel data and configured to drive first and second pixels of a display panel based on the first pixel data and the second pixel data of a first line; and a data comparator configured to compare the first pixel data with the second pixel data and determine operation states of the first channel amplifier and the second channel amplifier on a comparison result, before a first horizontal period in which the first pixel and the second pixel are driven.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: February 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho Kong, Hong-keun Yune, Jee-hwal Kim, Jin-hong Hwang, Seung-hyun An, Yang-hyo Kim
  • Publication number: 20180342217
    Abstract: A display device including a display panel and a driving circuit configured to drive the display panel may be provided. The display panel includes a plurality of gate lines, a plurality of data lines and a plurality of sub pixels connected to the plurality of gate lines and the plurality of data lines, respectively.
    Type: Application
    Filed: December 6, 2017
    Publication date: November 29, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Pyo KIM, Ki-Ho Kong, Young-Bae Moon
  • Publication number: 20180315390
    Abstract: Disclosed are a display driving circuit and a display apparatus including the same. A display driving circuit includes a first amplifier configured to drive a first data line of a display panel based on first pixel data and a second amplifier configured to drive a second data line of the display panel based on second pixel data, wherein, when a first data difference between the first pixel data and the second pixel data is greater than or equal to a data value indicating one grayscale and is less than or equal to a first threshold value, the second amplifier is turned off, and the first amplifier is configured to drive the first data line and the second data line based on the first pixel data and the second pixel data.
    Type: Application
    Filed: April 12, 2018
    Publication date: November 1, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho KONG, Taek-su KWON, Jong-hyun KIM, Jee-hwal KIM, Jun-ho PARK, Hong-Keun YUNE
  • Patent number: 10078980
    Abstract: A data driver and a display driving circuit are provided. The display driving circuit includes a first gamma voltage generator that supplies a first gamma voltage set, a second gamma voltage generator that supplies a second gamma voltage set, a first channel driver that outputs a selected one of gamma voltages of the first gamma voltage set, and a second channel driver that outputs a selected one of gamma voltages of the second gamma voltage set. In a first operation mode, the first channel driver and the second channel driver respectively drive a first data line and a second data line of a display panel, and in a second operation mode, the second gamma voltage generator and the second channel driver are disabled, and the first channel driver time-divisionally drives the first data line and the second data line, based on the first gamma voltage set.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: September 18, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-ho Kong, Hong-keun Yune, Jee-hwal Kim
  • Publication number: 20180075817
    Abstract: A display driver integrated circuit (DDI) for driving a display panel is provided. The DDI is implemented as a single semiconductor chip including a driver circuit and a switching circuit. The driver circuit outputs image signals to be displayed on pixel groups connected to one gate line of a display panel to a plurality of channels during one horizontal time period. The switching circuit selectively connects each of the plurality of channels to data lines of a corresponding pixel group according to a selection signal indicating a display order of the pixel groups and provides the image signals to selected data lines.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 15, 2018
    Inventors: Jee-hwal Kim, Ki-ho Kong
  • Publication number: 20170345357
    Abstract: A source driver for a display device includes a gamma voltage generation circuit, first through (2m)-th data driving circuits, and a switch circuit. The gamma voltage generation circuit generates R, G and B gamma voltages. The (2k?1)-th data driving circuits consecutively receive red image data and blue image data, and consecutively generate a R driving voltage and a B driving voltage using the R gamma voltages and B gamma voltages, respectively, during one horizontal period. The (2k)-th data driving circuits consecutively receive first green image data and second green image data, and consecutively generate a G1 driving voltage and a G2 driving voltage, respectively, using the G gamma voltages during the one horizontal period. The switch circuit outputs the R, B, G1, and G2 driving voltages through different data lines from each other based on a first selection signal and a second selection signal.
    Type: Application
    Filed: August 21, 2017
    Publication date: November 30, 2017
    Inventors: KI-HO KONG, Dong-Wook Suh, Hee-Jong Kim, Chang-Hee Shin, Hyeok-Chul Kwon, Hong-Keun Yune
  • Publication number: 20170309219
    Abstract: A data driver and a display driving circuit are provided. The display driving circuit includes a first gamma voltage generator that supplies a first gamma voltage set, a second gamma voltage generator that supplies a second gamma voltage set, a first channel driver that outputs a selected one of gamma voltages of the first gamma voltage set, and a second channel driver that outputs a selected one of gamma voltages of the second gamma voltage set. In a first operation mode, the first channel driver and the second channel driver respectively drive a first data line and a second data line of a display panel, and in a second operation mode, the second gamma voltage generator and the second channel driver are disabled, and the first channel driver time-divisionally drives the first data line and the second data line, based on the first gamma voltage set.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 26, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-ho KONG, Hong-keun YUNE, Jee-hwal KIM
  • Publication number: 20170287429
    Abstract: A display driving circuit and a display device including the display driving circuit are disclosed. The display driving circuit includes: a data driver including a first channel amplifier operating based on first pixel data and a second channel amplifier operating based on second pixel data and configured to drive first and second pixels of a display panel based on the first pixel data and the second pixel data of a first line; and a data comparator configured to compare the first pixel data with the second pixel data and determine operation states of the first channel amplifier and the second channel amplifier on a comparison result, before a first horizontal period in which the first pixel and the second pixel are driven.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-ho KONG, Hong-keun Yune, Jee-hwal Kim, Jin-hong Hwang, Seung-hyun An, Yang-hyo Kim