Patents by Inventor Hyun-sik Yoon

Hyun-sik Yoon 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: 20250231218
    Abstract: A test socket is capable of providing heat that is required to perform burn-in tests without any additional equipment, the test socket including: a connection portion 120; a frame 110 supporting the connection portion 120; and a heating wire 150 disposed on the frame 110.
    Type: Application
    Filed: October 17, 2022
    Publication date: July 17, 2025
    Applicant: ISC CO., LTD
    Inventors: Jong Woo OH, Hyun Sik YOON, Byeung Ju LEE
  • Patent number: 12327513
    Abstract: A display device includes a display panel including a pixel, a data driver which provides a data voltage to the pixel, an artificial intelligence model which receives luminance efficiency for each of colors in each of panel blocks of the display panel and predicts a power current applied to the display panel, and a timing controller which controls the data driver and provides the luminance efficiency for each of the colors to the artificial intelligence model.
    Type: Grant
    Filed: November 16, 2023
    Date of Patent: June 10, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyun-Sik Yoon
  • Patent number: 12300170
    Abstract: A display device includes a display panel including a pixel, a temperature sensor which senses a temperature of the display panel and outputs the temperature of the display panel as a sensing temperature, a first compensation part which receives a gate-source voltage sensed in the pixel as a sensing voltage and compensates for the sensing voltage by a change amount of the gate-source voltage corresponding to a difference value between a reference temperature and the sensing temperature, and a second compensation part which compensates for data to be applied to the pixel by comparing a compensated sensing voltage with an initial gate-source voltage.
    Type: Grant
    Filed: May 17, 2023
    Date of Patent: May 13, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seonghwan Choi, Hyun-Sik Yoon, Moonju Kim, Jiyoung Eom, Yong-Ju Jeong
  • Patent number: 12266292
    Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.
    Type: Grant
    Filed: July 14, 2023
    Date of Patent: April 1, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Jin Seo, Tae Wan Kim, Hwa An Sung, Hyun Sik Yoon, Jeong Ah Lee, Dae Ho Hwang
  • Patent number: 12266315
    Abstract: A display device includes a driving control circuit that receives an input image signal and outputs an output image signal, a data driving circuit that outputs a data signal corresponding to the output image signal, and a display panel including a plurality of pixels to display an image corresponding to the data signal. The driving control circuit determines an amount of time the input image signal is maintained as a still image, determines a color coordinate gain based on the amount of time and outputs the output image signal based on the color coordinate gain.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: April 1, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kihyun Sung, Jongwoon Kim, Kihong Song, Hyun-Sik Yoon, Yeseul Lee
  • Patent number: 12175900
    Abstract: A display device is disclosed that includes a display panel including a plurality of pixels, a printed circuit board connected to the display panel, a temperature sensor disposed on the printed circuit board, a flexible circuit board that connects the display panel to the printed circuit board, a data driver disposed on the flexible circuit board, and a temperature sensing part disposed on the printed circuit board. The flexible circuit board is bent such that the printed circuit board is disposed under the display panel and the temperature sensor is disposed adjacent to a sensing pixel outputting a sensing current among the pixels.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: December 24, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Jongwoon Kim, Wonjin Seo, Kihyun Sung, Kihong Song, Yeseul Lee, Daeho Hwang
  • Patent number: 12062337
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Grant
    Filed: May 16, 2023
    Date of Patent: August 13, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Yong-Ju Jeong, Daeho Hwang
  • Publication number: 20240233616
    Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.
    Type: Application
    Filed: July 14, 2023
    Publication date: July 11, 2024
    Inventors: Won Jin SEO, Tae Wan KIM, Hwa An SUNG, Hyun Sik YOON, Jeong Ah LEE, Dae Ho HWANG
  • Publication number: 20240221598
    Abstract: A display device includes a display panel including a pixel, a data driver which provides a data voltage to the pixel, an artificial intelligence model which receives luminance efficiency for each of colors in each of panel blocks of the display panel and predicts a power current applied to the display panel, and a timing controller which controls the data driver and provides the luminance efficiency for each of the colors to the artificial intelligence model.
    Type: Application
    Filed: November 16, 2023
    Publication date: July 4, 2024
    Inventor: HYUN-SIK YOON
  • Publication number: 20240135863
    Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 25, 2024
    Inventors: Won Jin SEO, Tae Wan KIM, Hwa An SUNG, Hyun Sik YOON, Jeong Ah LEE, Dae Ho HWANG
  • Patent number: 11881160
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: January 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Yoon, Jong Woon Kim, Won Jin Seo, Ki Hyun Sung, Ye Seul Lee, Dae Ho Hwang
  • Publication number: 20240021143
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Application
    Filed: February 8, 2023
    Publication date: January 18, 2024
    Inventors: Hyun Sik YOON, Jong Woon KIM, Won Jin SEO, Ki Hyun SUNG, Ye Seul LEE, Dae Ho HWANG
  • Publication number: 20240021158
    Abstract: A display device includes a display panel including a pixel, a temperature sensor which senses a temperature of the display panel and outputs the temperature of the display panel as a sensing temperature, a first compensation part which receives a gate-source voltage sensed in the pixel as a sensing voltage and compensates for the sensing voltage by a change amount of the gate-source voltage corresponding to a difference value between a reference temperature and the sensing temperature, and a second compensation part which compensates for data to be applied to the pixel by comparing a compensated sensing voltage with an initial gate-source voltage.
    Type: Application
    Filed: May 17, 2023
    Publication date: January 18, 2024
    Inventors: SEONGHWAN CHOI, HYUN-SIK YOON, MOONJU KIM, JIYOUNG EOM, YONG-JU JEONG
  • Publication number: 20230419871
    Abstract: A display device is disclosed that includes a display panel including a plurality of pixels, a printed circuit board connected to the display panel, a temperature sensor disposed on the printed circuit board, a flexible circuit board that connects the display panel to the printed circuit board, a data driver disposed on the flexible circuit board, and a temperature sensing part disposed on the printed circuit board. The flexible circuit board is bent such that the printed circuit board is disposed under the display panel and the temperature sensor is disposed adjacent to a sensing pixel outputting a sensing current among the pixels.
    Type: Application
    Filed: April 11, 2023
    Publication date: December 28, 2023
    Inventors: HYUN-SIK YOON, JONGWOON KIM, WONJIN SEO, KIHYUN SUNG, KIHONG SONG, YESEUL LEE, DAEHO HWANG
  • Publication number: 20230401998
    Abstract: A display device includes a display panel including a plurality of pixels, and an image sticking compensator for generating age data with respect to the plurality of pixels by accumulating average degradation data that is an average of degradation data with respect to a plurality of successive frame periods, by accumulating the degradation data with respect to a representative frame period among the plurality of successive frame periods, or by accumulating degradation data generated by accumulating degradation differential data with respect to two successive frame periods, and generating output image data by compensating input image data using the age data.
    Type: Application
    Filed: April 4, 2023
    Publication date: December 14, 2023
    Inventors: JONGWOON KIM, HYUN-SIK YOON, KIHYUN SUNG, KIHONG SONG
  • Publication number: 20230402016
    Abstract: A display device includes a driving control circuit that receives an input image signal and outputs an output image signal, a data driving circuit that outputs a data signal corresponding to the output image signal, and a display panel including a plurality of pixels to display an image corresponding to the data signal. The driving control circuit determines an amount of time the input image signal is maintained as a still image, determines a color coordinate gain based on the amount of time and outputs the output image signal based on the color coordinate gain.
    Type: Application
    Filed: April 11, 2023
    Publication date: December 14, 2023
    Inventors: KIHYUN SUNG, JONGWOON KIM, KIHONG SONG, HYUN-SIK YOON, YESEUL LEE
  • Publication number: 20230343284
    Abstract: A display device includes a display panel, a temperature sensor that detects an ambient temperature and outputs a first temperature signal corresponding to the detected ambient temperature, a memory that receives a memory power supply voltage and stores a compensation signal, a driving controller that receives the first temperature signal from the temperature sensor and an input image signal, and provides the display panel with an output image signal which is obtained by compensating for the input image signal based on the compensation signal from the memory, and a voltage generator that generates the memory power supply voltage in response to a voltage control signal from the driving controller. The driving controller outputs the voltage control signal such that the memory power supply voltage has a voltage level corresponding to the first temperature signal.
    Type: Application
    Filed: January 17, 2023
    Publication date: October 26, 2023
    Inventors: KIHYUN SUNG, HYUN-SIK YOON, JONGWOON KIM, KIHONG SONG
  • Publication number: 20230282168
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Application
    Filed: May 16, 2023
    Publication date: September 7, 2023
    Inventors: HYUN-SIK YOON, YONG-JU JEONG, DAEHO HWANG
  • Patent number: 11699388
    Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: July 11, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Yoon, Jong Woon Kim, Ick Kyu Jang, Dae Ho Hwang
  • Patent number: 11688349
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: June 27, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Yong-Ju Jeong, Daeho Hwang