Patents by Inventor Hak-Mo CHOI

Hak-Mo CHOI 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: 11210991
    Abstract: In a method of generating correction data for each of a plurality of display devices, a characteristic distribution for initial display devices among the plurality of display devices may be obtained, center characteristic compensation data may be generated based on the characteristic distribution for the initial display devices, the center characteristic compensation data may be applied to subsequent display devices that are subsequent to the initial display devices among the plurality of display devices, mura correction data and image quality correction data may be generated by performing mura correction and image quality correction on each of the subsequent display devices to which the center characteristic compensation data are applied, and the center characteristic compensation data, the mura correction data and the image quality correction data may be written into each of the subsequent display devices.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: December 28, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Seob Chung, Hoi Sik Moon, Hyung Woo Yim, Kang Hyun Kim, Hak Mo Choi
  • Publication number: 20210280111
    Abstract: In a method of generating correction data for each of a plurality of display devices, a characteristic distribution for initial display devices among the plurality of display devices may be obtained, center characteristic compensation data may be generated based on the characteristic distribution for the initial display devices, the center characteristic compensation data may be applied to subsequent display devices that are subsequent to the initial display devices among the plurality of display devices, mura correction data and image quality correction data may be generated by performing mura correction and image quality correction on each of the subsequent display devices to which the center characteristic compensation data are applied, and the center characteristic compensation data, the mura correction data and the image quality correction data may be written into each of the subsequent display devices.
    Type: Application
    Filed: November 30, 2020
    Publication date: September 9, 2021
    Inventors: Jae-Seob CHUNG, Hoi Sik MOON, Hyung Woo YIM, Kang Hyun KIM, Hak Mo CHOI
  • Patent number: 10490110
    Abstract: A display apparatus includes, a first pattern included in a first layer, a second pattern included in a second layer, a first test pattern including a plurality of first lines extending in a first direction and having a first width, and being spaced apart from each other, a second test pattern included in the second layer, including a central line and a plurality of second lines connected to the central line, wherein the plurality of second lines extend in the first direction have a second width, and are spaced apart from each other, and wherein at least one of the second lines is electrically connected to the first lines, and a shift tester configured to apply a test voltage to the central line to determine a degree by which the second pattern is shifted with respect to the first pattern by measuring the voltages at the first lines.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: November 26, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Hee Na, Hoisik Moon, Kang-Hyun Kim, Juneyoung Lee, Hyungwoo Yim, Jae-Seob Chung, Min-Yup Chae, Jae-Seok Choi, Hak-Mo Choi, Jung-Suk Han
  • Patent number: 10152938
    Abstract: A display panel is divided into multiple areas respectively driven by multiple drivers, and the multiple areas are adjacent to each other along a first direction. An object moves along the first direction between a first frame and a second frame and is displayed on the display panel. The moving speed of the object is compared with a reference speed. A main compensation frame is added between the first frame and the second frame. A first high speed compensation frame is added between the first frame and the main compensation frame when the moving speed is higher than or equal to the reference speed. A first low speed compensation frame is added between the first frame and the main compensation frame when the moving speed is lower than the reference speed, and the first low speed compensation frame is different from the first high speed compensation frame.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: December 11, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Soo Lee, Hoi-Sik Moon, Gwang-Ho Nam, Min-Yup Chae, Hak-Mo Choi
  • Patent number: 10102811
    Abstract: A method of displaying a three-dimensional image includes outputting a converted left image generated based on a left image to a pixel of a display panel during a first period, where the converted left image has a grayscale value less than a grayscale value of the left image, outputting the left image to the pixel of the display panel during a second period, outputting a converted right image generated based on a right image to the pixel of the display panel during a third period, where the converted right image has a grayscale value less than a grayscale value of the right image, and outputting the right image to the pixel of the display panel during a fourth period.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: October 16, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Pyo Lee, Hyun-Sik Yoon, Hak-Mo Choi, Jae-Hyoung Park, Byung-Kil Jeon
  • Patent number: 10074317
    Abstract: A method of displaying a three-dimensional image includes outputting a converted left image generated based on a left image to a pixel of a display panel during a first period, where the converted left image has a grayscale value less than a grayscale value of the left image, outputting the left image to the pixel of the display panel during a second period, outputting a converted right image generated based on a right image to the pixel of the display panel during a third period, where the converted right image has a grayscale value less than a grayscale value of the right image, and outputting the right image to the pixel of the display panel during a fourth period.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Pyo Lee, Hyun-Sik Yoon, Hak-Mo Choi, Jae-Hyoung Park, Byung-Kil Jeon
  • Publication number: 20180114494
    Abstract: A method of displaying a three-dimensional image includes outputting a converted left image generated based on a left image to a pixel of a display panel during a first period, where the converted left image has a grayscale value less than a grayscale value of the left image, outputting the left image to the pixel of the display panel during a second period, outputting a converted right image generated based on a right image to the pixel of the display panel during a third period, where the converted right image has a grayscale value less than a grayscale value of the right image, and outputting the right image to the pixel of the display panel during a fourth period.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 26, 2018
    Inventors: Jun-Pyo LEE, Hyun-Sik YOON, Hak-Mo CHOI, Jae-Hyoung PARK, Byung-Kil JEON
  • Patent number: 9881575
    Abstract: A method of driving a display panel includes outputting a dummy gate voltage to a gate line disposed on a boundary of a first area of the display panel and a second area of the display panel adjacent to the first area during a blank period between a plurality of scanning periods and outputting a dummy data voltage to a data line during the blank period.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: January 30, 2018
    Assignee: Samsung Display Co., Ltd
    Inventors: Hak-Mo Choi, Hoi-Sik Moon, Min-Yup Chae
  • Patent number: 9875696
    Abstract: A method of displaying a three-dimensional image includes outputting a converted left image generated based on a left image to a pixel of a display panel during a first period, where the converted left image has a grayscale value less than a grayscale value of the left image, outputting the left image to the pixel of the display panel during a second period, outputting a converted right image generated based on a right image to the pixel of the display panel during a third period, where the converted right image has a grayscale value less than a grayscale value of the right image, and outputting the right image to the pixel of the display panel during a fourth period.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: January 23, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Pyo Lee, Hyun-Sik Yoon, Hak-Mo Choi, Jae-Hyoung Park, Byung-Kil Jeon
  • Patent number: 9870748
    Abstract: A method of driving a display panel is provided. The display panel includes first through n-th gate lines and a plurality of pixels each connected to one of the first through n-th gate lines (where n is a natural number). The method includes charging pixels connected to the n-th gate line with first data voltages corresponding to a first frame image during a first period, charging pixels connected to the first gate line with the first data voltages during the first period, charging the pixels connected to the first gate line with second data voltages corresponding to a second frame image during a second period subsequent to the first period, and charging pixels connected to the second gate line with the second data voltages during the second period.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: January 16, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hak-Mo Choi, Hoi-Sik Moon, Gwang-Ho Nam, Chang-Soo Lee, Min-Yup Chae
  • Publication number: 20170337861
    Abstract: A display apparatus includes, a first pattern included in a first layer, a second pattern included in a second layer, a first test pattern including a plurality of first lines extending in a first direction and having a first width, and being spaced apart from each other, a second test pattern included in the second layer, including a central line and a plurality of second lines connected to the central line, wherein the plurality of second lines extend in the first direction have a second width, and are spaced apart from each other, and wherein at least one of the second lines is electrically connected to the first lines, and a shift tester configured to apply a test voltage to the central line to determine a degree by which the second pattern is shifted with respect to the first pattern by measuring the voltages at the first lines.
    Type: Application
    Filed: March 17, 2017
    Publication date: November 23, 2017
    Inventors: JONG-HEE NA, Hoisik Moon, Kang-Hyun Kim, Juneyoung Lee, Hyungwoo Yim, Jae-Seob Chung, Min-Yup Chae, Jae-Seok Choi, Hak-Mo Choi, Jung-Suk Han
  • Patent number: 9524687
    Abstract: A method of driving a display panel includes respectively outputting first to j-th, where j is a natural number, gate signals to first to j-th gate lines disposed on a first area of the display panel during a load period when an image is displayed on the display panel due to an output of a data signal to the display panel, adjusting a blank gate voltage during a blank period between load periods to generate an adjusted blank gate voltage, generating a blank gate signal based on the adjusted blank gate voltage, and outputting the blank gate signal. Thus, display quality of a display apparatus may be improved.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: December 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hak-Mo Choi, Gwang-Ho Nam, Hoi-Sik Moon, Min-Yup Chae, Jae-Seok Choi
  • Patent number: 9430960
    Abstract: A display device and a driving method thereof are disclosed. In one aspect, the display device includes a display panel including a plurality of pixels, a data driver transferring data voltages to a plurality of data lines, and a gate driver transferring gate signals to a plurality of gate lines. The display device also includes a signal controller controlling the data driver and the gate driver and including a signal processor. The signal processor includes a memory and a coupling index calculator calculating a coupling index which represents a coupling degree between adjacent rows. The signal processor compensates for the input image signal to generate a compensated image signal based at least in part on the coupling index.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: August 30, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Suk Choi, Hoi Sik Moon, Gwang Ho Nam, Chang-Soo Lee, Min-Yup Chae, Hak-Mo Choi
  • Patent number: 9390645
    Abstract: A display apparatus is provided. The display apparatus includes a display panel including a plurality of display blocks; a driving circuit configured to control an image to be displayed on the display panel; and a timing controller configured to control the driving circuit in response to an image signal and a control signal and to provide a data signal to the driving circuit, wherein the timing controller comprises a memory storing gamma correction values corresponding to gray scales of the image signal, and wherein the timing controller outputs the data signal, and the data signal is obtained by correcting the image signal using the gamma correction values.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Seok Choi, Hoisik Moon, Gwangho Nam, Chang-Soo Lee, Min-Yup Chae, Hak-Mo Choi
  • Publication number: 20160196797
    Abstract: A display panel is divided into multiple areas respectively driven by multiple drivers, and the multiple areas are adjacent to each other along a first direction. An object moves along the first direction between a first frame and a second frame and is displayed on the display panel. The moving speed of the object is compared with a reference speed. A main compensation frame is added between the first frame and the second frame. A first high speed compensation frame is added between the first frame and the main compensation frame when the moving speed is higher than or equal to the reference speed. A first low speed compensation frame is added between the first frame and the main compensation frame when the moving speed is lower than the reference speed, and the first low speed compensation frame is different from the first high speed compensation frame.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 7, 2016
    Inventors: Chang-Soo Lee, Hoi-Sik Moon, Gwang-Ho Nam, Min-Yup Chae, Hak-Mo Choi
  • Publication number: 20160189655
    Abstract: A method of driving a display panel is provided. The display panel includes first through n-th gate lines and a plurality of pixels each connected to one of the first through n-th gate lines (where n is a natural number). The method includes charging pixels connected to the n-th gate line with first data voltages corresponding to a first frame image during a first period, charging pixels connected to the first gate line with the first data voltages during the first period, charging the pixels connected to the first gate line with second data voltages corresponding to a second frame image during a second period subsequent to the first period, and charging pixels connected to the second gate line with the second data voltages during the second period.
    Type: Application
    Filed: June 16, 2015
    Publication date: June 30, 2016
    Inventors: HAK-MO CHOI, HOl-SIK MOON, GWANG-HO NAM, CHANG-SOO LEE, MIN-YUP CHAE
  • Patent number: 9311875
    Abstract: A display device includes pixels respectively arranged in areas defined by gate lines and data lines, a gate driver that drives the gate lines in response to a gate pulse signal, a data driver that drives the data lines in response to a clock signal and a data signal, and a timing controller that applies the clock signal and the data signal to the data driver and the gate pulse signal to the gate driver in response to an image signal and a control signal. The timing controller periodically changes a pulse width of each of the gate pulse signal and the clock signal.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hak-Mo Choi, Jong-Hee Na, Gwangho Nam, Hoisik Moon, Chang-Soo Lee, Min-Yup Chae, Jae-Suk Choi
  • Patent number: 9269290
    Abstract: A display device is provided. The display device includes pixels, a data driver, a signal controller, a data processor. The data driver is configured to apply a first data voltage to a first pixel. The signal controller is configured to transfer an image data signal and a data control signal for controlling an operation of the data driver. The data processor is configured to detect a first region including a moving in a first image signal, to apply a first dynamic capacitance control (DCC) to the first region, to apply a second DCC to a second region other than the moving pattern region, to generate the second image signal by combining the first region to which the first DCC is applied and the second region to which the second DCC is applied, and to transfer the second image signal to the signal controller.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min-Yup Chae, Hoi Sik Moon, Gwang Ho Nam, Chang-Soo Lee, Jae-Seok Choi, Hak-Mo Choi
  • Publication number: 20160019824
    Abstract: A method of driving a display panel includes outputting a dummy gate voltage to a gate line disposed on a boundary of a first area of the display panel and a second area of the display panel adjacent to the first area during a blank period between a plurality of scanning periods and outputting a dummy data voltage to a data line during the blank period.
    Type: Application
    Filed: May 20, 2015
    Publication date: January 21, 2016
    Inventors: Hak-Mo CHOI, Hoi-Sik MOON, Min-Yup CHAE
  • Publication number: 20150206472
    Abstract: A display device is provided. The display device includes pixels, a data driver, a signal controller, a data processor. The data driver is configured to apply a first data voltage to a first pixel. The signal controller is configured to transfer an image data signal and a data control signal for controlling an operation of the data driver. The data processor is configured to detect a first region including a moving in a first image signal, to apply a first dynamic capacitance control (DCC) to the first region, to apply a second DCC to a second region other than the moving pattern region, to generate the second image signal by combining the first region to which the first DCC is applied and the second region to which the second DCC is applied, and to transfer the second image signal to the signal controller.
    Type: Application
    Filed: July 11, 2014
    Publication date: July 23, 2015
    Inventors: Min-Yup Chae, Hoi Sik Moon, Gwang Ho Nam, Chang-Soo Lee, Jae-Seok Choi, Hak-Mo Choi