Patents by Inventor Byung-Ki Chun

Byung-Ki Chun 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: 12125452
    Abstract: A display device including: a display panel including pixels; a controller configured to receive input image data, to detect a high gray region adjacent to a low gray region in an image represented by the input image data, to set at least a portion of the low gray region adjacent to the high gray region as a light spread region based on a light spread distance or a pixel density of the display panel, and to generate output image data by correcting the input image data for the light spread region; and a data driver configured to provide data voltages to the pixels based on the output image data.
    Type: Grant
    Filed: July 12, 2023
    Date of Patent: October 22, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Gwang Jang, Byung Ki Chun
  • Publication number: 20240260439
    Abstract: A display device includes: pixels in an active area, each of the pixels being electrically connected to a corresponding data line and a corresponding scan line; and a dummy pixel adjacent to at least one of the pixels, and electrically connected to the corresponding scan line and a sensing line. Each of the pixels and the dummy pixel includes: a light emitting element including a first electrode electrically connected to a first node, a second electrode, and an emission layer between the first electrode and the second electrode; a first transistor; a second transistor; a third transistor; a first capacitor; a fourth transistor; a fifth transistor; and a second capacitor. The dummy pixel further includes a sensing transistor electrically connected between the sensing line and the first node.
    Type: Application
    Filed: November 10, 2023
    Publication date: August 1, 2024
    Inventors: MIN-SEOK BAE, KANGHEE LEE, CHANGBIN IM, BYUNG KI CHUN
  • Publication number: 20240257752
    Abstract: A display device includes a display panel including, a driving transistor configured to generate driving current, a light emitting element configured to emit light based on the driving current and an initialization transistor configured to apply an initialization voltage to an output electrode of the driving transistor, a sensing driver configured to generate sensing data by receiving the driving current of the pixels through initialization transistors and a driving controller configured to generate accumulated image data by accumulating input image data for frames and to compensate for the input image data based on the accumulated image data and the sensing data.
    Type: Application
    Filed: April 11, 2024
    Publication date: August 1, 2024
    Inventors: MIN-SEOK BAE, CHANGBIN IM, BYUNG KI CHUN
  • Patent number: 12051377
    Abstract: A display apparatus includes a display panel, a driving controller, and a data driver. The driving controller generates a data signal based on input image data. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller includes a deterioration compensator. The deterioration compensator generates an alpha value based on a ratio between a sensed current read from a portion of the display panel applied with a high power voltage or a portion of the display panel applied with a low power voltage and a predicted current calculated from the input image data and generates the data signal using the input image data, a stress value of a pixel, and the alpha value.
    Type: Grant
    Filed: July 18, 2023
    Date of Patent: July 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Woong Park, Wonju Shin, Byung Ki Chun, Kanghee Lee
  • Patent number: 12008964
    Abstract: A display device includes pixels, an image converter which generates a second image by correcting grayscales of a first logo in a first image for the pixels, and a data driver which provides data signals corresponding to the second image to the pixels. The image converter detects the first logo based on value and saturation of the first image, generates first map data corresponding to the first logo, and specifies pixels corresponding to the first logo based on the first map data.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: June 11, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Ki Chun, Hyeon Min Kim, Young Wook Yoo, Jun Gyu Lee, Hyun Jun Lim
  • Patent number: 11996019
    Abstract: A display device includes: a plurality of first pixels connected to a first scan line; a plurality of second pixels connected to a second scan line; and a plurality of third pixels connected to a third scan line, wherein, from a position in a first frame period, an image portion displayed by the first pixels, the second pixels, and the third pixels, which are connected to first data lines, is shifted in a first direction, in a second frame period next to the first frame period, wherein an image portion displayed by the first pixels and the second pixels, which are connected to second data lines, is shifted in the first direction, in the second frame period, wherein an image portion displayed by the third pixels connected to the second data lines is shifted in a direction different from the first direction, in the second frame period.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 28, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Gyu Lee, Byung Ki Chun
  • Publication number: 20240169894
    Abstract: A data driving circuit includes: a reference voltage generator that receives a data control signal and generates a gamma reference voltage and a test reference voltage, a data driving unit that outputs a data signal for a pixel based on the gamma reference voltage, and an output circuit that outputs a test data voltage for a dummy pixel based on the test reference voltage.
    Type: Application
    Filed: August 21, 2023
    Publication date: May 23, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: BYUNG KI CHUN, SUN-KOO KANG, MYEONGBIN LIM, MIN-SEOK BAE, KANGHEE LEE
  • Patent number: 11984082
    Abstract: A display device includes a display panel including, a driving transistor configured to generate driving current, a light emitting element configured to emit light based on the driving current and an initialization transistor configured to apply an initialization voltage to an output electrode of the driving transistor, a sensing driver configured to generate sensing data by receiving the driving current of the pixels through initialization transistors and a driving controller configured to generate accumulated image data by accumulating input image data for frames and to compensate for the input image data based on the accumulated image data and the sensing data.
    Type: Grant
    Filed: May 16, 2023
    Date of Patent: May 14, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Seok Bae, Changbin Im, Byung Ki Chun
  • Patent number: 11984086
    Abstract: Provided is a display device comprising at least one sensing pixel including a sensing pixel circuit, a sensing unit including sensing circuit, and a temperature output unit to calculate a temperature of the display panel based on the sensing data. The sensing data is generated from a sensing pixel including a driving transistor in which a current generated according to temperature varies, and a temperature is measured from the sensing data.
    Type: Grant
    Filed: March 22, 2023
    Date of Patent: May 14, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Hyeong An, Jae Hoon Lee, Byung Ki Chun
  • Publication number: 20240153459
    Abstract: A display device includes a display panel including a pixel and a sensor pixel, the pixel including a light emitting element and a driving transistor controlling a current flowing through the light emitting element, the sensor pixel including sensor transistors, a data driver that supplies a data signal to the pixel through a data line and provides a sensor data signal to the sensor pixel through a sensor data line, and a sensing driver that obtains sensing information on a current flowing through the sensor pixel. The sensor transistors are electrically connected in parallel to each other and are commonly electrically connected to the sensor data line. The sensor transistors and the driving transistor include a substantially same characteristic.
    Type: Application
    Filed: November 2, 2023
    Publication date: May 9, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Byung Ki CHUN, Ji Hyun KA, Min Seok BAE, Chang Bin IM, Chae Han HYUN
  • Patent number: 11967262
    Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller is configured to: receive input image data for the display panel; divide the display panel into a plurality of first pixel blocks each having a first size; divide the display panel into a plurality of second pixel blocks each having a second size different from the first size; generate, based on the input image data, a first stress map for the plurality of first pixel blocks and a second stress map for the plurality of second pixel blocks; and generate output image data by compensating the input image data based on the first stress map and the second stress map. The data driver is configured to provide data voltages to the plurality of pixels based on the output image data.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ki Chun, Hyeonmin Kim, Yongseok Choi
  • Publication number: 20240112630
    Abstract: A display device includes a display panel including, a driving transistor configured to generate driving current, a light emitting element configured to emit light based on the driving current and an initialization transistor configured to apply an initialization voltage to an output electrode of the driving transistor, a sensing driver configured to generate sensing data by receiving the driving current of the pixels through initialization transistors and a driving controller configured to generate accumulated image data by accumulating input image data for frames and to compensate for the input image data based on the accumulated image data and the sensing data.
    Type: Application
    Filed: May 16, 2023
    Publication date: April 4, 2024
    Inventors: MIN-SEOK BAE, CHANGBIN IM, BYUNG KI CHUN
  • Publication number: 20240105127
    Abstract: A display apparatus includes a display panel, a driving controller, and a data driver. The driving controller generates a data signal based on input image data. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller includes a deterioration compensator. The deterioration compensator generates an alpha value based on a ratio between a sensed current read from a portion of the display panel applied with a high power voltage or a portion of the display panel applied with a low power voltage and a predicted current calculated from the input image data and generates the data signal using the input image data, a stress value of a pixel, and the alpha value.
    Type: Application
    Filed: July 18, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: JONG-WOONG PARK, WONJU SHIN, BYUNG KI CHUN, KANGHEE LEE
  • Publication number: 20240105134
    Abstract: A display device including: a display panel including pixels; a controller configured to receive input image data, to detect a high gray region adjacent to a low gray region in an image represented by the input image data, to set at least a portion of the low gray region adjacent to the high gray region as a light spread region based on a light spread distance or a pixel density of the display panel, and to generate output image data by correcting the input image data for the light spread region; and a data driver configured to provide data voltages to the pixels based on the output image data.
    Type: Application
    Filed: July 12, 2023
    Publication date: March 28, 2024
    Inventors: DAE-GWANG JANG, Byung Ki Chun
  • Patent number: 11922600
    Abstract: An afterimage compensator includes: a logo detector configured to detect a logo area including a logo image displayed in a display panel and a logo background image included in a preset range at the periphery of the logo image, based on input image data; a blurring determiner configured to determine a blurring area corresponding to the logo image, using the logo image and the logo background image; and an image corrector configured to blur the logo image, based on the blurring area.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: March 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ki Chun, Young Wook Yoo, Jun Gyu Lee
  • Publication number: 20230419873
    Abstract: Provided is a display device comprising pixel circuits included in the display area, the pixel circuits including light emitting elements with grayscales corresponding to data input from the outside, a dummy pixel circuit included in the non-display area, the dummy pixel circuit including a dummy light emitting element and a dummy driving transistor, a sensing unit for inputting to the dummy pixel circuit, a test data signal for sensing an output signal corresponding to predetermined test data for each predetermined time, and then performing an operation of generating compensation information for compensating for degradation according to a driving time of at least one of the light emitting element and the driving transistor based on the output signal output from the dummy pixel circuit, and a timing controller for accumulating and storing the compensation information, and generating compensated data by compensating for the data input from the outside.
    Type: Application
    Filed: May 19, 2023
    Publication date: December 28, 2023
    Inventors: Byung Ki CHUN, Jae Hoon LEE, Tae Hyeong AN
  • Publication number: 20230410755
    Abstract: Provided is a display device comprising at least one sensing pixel including a sensing pixel circuit, a sensing unit including sensing circuit, and a temperature output unit to calculate a temperature of the display panel based on the sensing data. The sensing data is generated from a sensing pixel including a driving transistor in which a current generated according to temperature varies, and a temperature is measured from the sensing data.
    Type: Application
    Filed: March 22, 2023
    Publication date: December 21, 2023
    Inventors: Tae Hyeong AN, Jae Hoon LEE, Byung Ki CHUN
  • Patent number: 11842276
    Abstract: The display device includes a plurality of pixels, a data driver, and a timing controller. The plurality of pixels are connected to a plurality of scan lines and a plurality of data lines. The data driver supplies a data voltage to the plurality of data lines in a light-emitting mode and supplies a neural network input voltage to the plurality of data lines in an artificial neural network mode. The timing controller is in an artificial neural network mode, and supplies a weight value control signal for performing a deep learning operation by using at least one of the plurality of pixels to the data driver. The weight value control signal is generated based on a predetermined weight value.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: December 12, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Wook Yoo, Hyeon Min Kim, Jun Gyu Lee, Hyun Jun Lim, Byung Ki Chun
  • Patent number: 11842675
    Abstract: A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: December 12, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Won Lee, Byung Ki Chun, Joon-Chul Goh, Bonghyun You
  • Patent number: 11682335
    Abstract: A display device includes a display panel, a memory, a dithering processor, and a panel driver. The display panel includes a display surface, and the memory stores dither patterns with respect to at least one spot area included in the display surface. The dithering processor selects a dither pattern among the dither patterns in a predetermined time unit and outputs a compensation image signal corresponding to the dither pattern. The panel driver outputs a data signal corresponding to the spot area based on the compensation image signal. Each of the dither patterns includes a first grayscale area having a first grayscale value higher than a first target grayscale value of the spot area and a second grayscale area having a second grayscale value lower than the first target grayscale value.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kuk-Hwan Ahn, Youngwook Yoo, Jungyu Lee, Hyunjun Lim, Byung Ki Chun