Patents by Inventor Chul Kim

Chul Kim 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: 12657960
    Abstract: A display device includes: a plurality of pixels in which at least a first portion of the pixels positioned in a selected area are configured to emit light in a sensing pattern; and a plurality of light sensors configured to generate sensing signals corresponding to a received light amount, wherein the selected area comprises a first area and a second area, and wherein in a first mode, a second portion of pixels positioned in the first area are configured to emit light in the sensing pattern, and to generate first sensing information using sensing signals generated by light sensors positioned in the second area, which does not overlap the first area.
    Type: Grant
    Filed: February 20, 2024
    Date of Patent: June 16, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventor: Chul Kim
  • Patent number: 12645110
    Abstract: Provided herein may be an electronic device including a processor configured to control, in a selected first mode, one unit pixel among the plurality of unit pixels to emit light, and control the one unit pixel to be sensed, and configured to control, in a selected second mode, one unit pixel among the plurality of unit pixels to emit light, and control another unit pixel that does not emit light among the plurality of unit pixels to be sensed. The electronic device and a method of driving the electronic device in accordance with embodiments may provide a biometric authentication function and a biometric signal sensing function.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: June 2, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kim, Dong Wook Yang
  • Patent number: 12640084
    Abstract: An electronic device and a method of driving the electronic device. The electronic device may include: a display panel including a display area, with photo sensors and pixels disposed in the display area; a panel driving circuit configured to cause pixels located in a light emitting area of the display area to emit light; a sensing circuit configured to sense signals of the photo sensors located in a light receiving area of the display area; a memory configured to store at least one application; and a processor configured to vary a setting of at least one of the light emitting area and the light receiving area depending on the application executed with reference to the memory. The electronic device and the method of driving the electronic device may provide a biometric authentication function and a biometric signal measuring function.
    Type: Grant
    Filed: November 30, 2023
    Date of Patent: May 26, 2026
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chul Kim, Dong Wook Yang
  • Patent number: 12620360
    Abstract: A display device including: a display panel including scan write lines, sensing lines, pixels respectively connected to the scan write lines, and optical sensors respectively connected to the scan write lines and the sensing lines; a scan driver configured to sequentially output scan write signals to the scan write lines in response to a scan control signal; a read-out circuit configured to receive light sensing signals of the optical sensors from the sensing lines in response to a first sampling signal; and a timing controller configured to control the scan driver and the read-out circuit, wherein an interval between pulses of the first sampling signal has a first horizontal period, and an interval between pulses of each of the scan write signals has a second horizontal period.
    Type: Grant
    Filed: May 13, 2024
    Date of Patent: May 5, 2026
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chul Kim
  • Patent number: 12598804
    Abstract: An integrated circuit device includes a pair of fin-type active regions, which extend in a first horizontal direction on a substrate, and a fin isolation insulator between ones of the pair of fin-type active regions to extend in a second horizontal direction that intersects with the first horizontal direction. The fin isolation insulator includes a first nitrogen-rich barrier film having at least one protrusion at a position that is higher than respective top surfaces of each of the pair of fin-type active regions with respect to the substrate, and a second nitrogen-rich barrier film, which is spaced apart from the first nitrogen-rich barrier film and is in a space defined by the first nitrogen-rich barrier film.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 7, 2026
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeondo Jung, Chul Kim, Kichul Kim, Gwirim Park, Haejun Yu, Chaeyeong Lee, Kyungin Choi
  • Publication number: 20260076020
    Abstract: A display device includes a base layer and a display element layer. The base layer includes a first area and a second area, and the display element layer is disposed on the base layer. In addition, the display element layer includes a first light sensor disposed in the first area and operating at a first operation frequency; and a second light sensor disposed in the second area and operating at a second operation frequency higher than the first operation frequency.
    Type: Application
    Filed: November 17, 2025
    Publication date: March 12, 2026
    Inventors: GYEONG-UB MOON, CHUL KIM, JONGYEOP AN, HYEON JUN LEE, BORAM CHOI
  • Publication number: 20260073881
    Abstract: A display device includes a display panel including pixels, and configured into blocks, a data driver configured to provide a data voltage to the display panel, a power management integrated circuit including power voltage circuits implemented as one integrated circuit, packaged together, and configured to output power voltages respectively to the blocks of the display panel, and a driving controller configured to control the data driver and the power management integrated circuit based on input image data.
    Type: Application
    Filed: June 11, 2025
    Publication date: March 12, 2026
    Inventor: CHUL KIM
  • Patent number: 12573232
    Abstract: Provided is a display device including a substrate including a fingerprint area. The fingerprint area includes a first area and a second area. A light-emitting element layer is disposed on the substrate. The light-emitting element layer includes light-emitting elements. A sensor layer is disposed on the substrate, the sensor layer including photosensors. The light-emitting elements include a first light-emitting element arranged in the first area and a second light-emitting element arranged in the second area. During a fingerprint sensing period, the first light-emitting element emits light and the second light-emitting element does not emit light.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: March 10, 2026
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yun Ho Kim, Keum Dong Jung, Jin Oh Kwag, Won Sang Park, Deok Hwa Woo, Bong Hyun You, Chul Kim, Seung Hyun Moon, Jun Hee Moon, Hee Chul Hwang
  • Patent number: 12504460
    Abstract: The present disclosure relates to a display panel inspection device. According to an embodiment of the disclosure, an inspection device includes a loading plate on which a display device is disposed, a reflective plate disposed along a first or second direction to face a display panel of the display device, and a light characteristics inspection control unit controlling a light emitting driving of the display panel and detecting light sensing signals through the display panel to inspect light detection characteristics of the display panel. The light characteristics inspection control unit is configured to inspect the light detection characteristics of the display panel by converting the light sensing signals into light sensing data in units of at least one frame and comparing the light sensing data in units of at least one frame with reference frame data.
    Type: Grant
    Filed: May 9, 2024
    Date of Patent: December 23, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chul Kim
  • Patent number: 12477889
    Abstract: A display device includes a base layer and a display element layer. The base layer includes a first area and a second area, and the display element layer is disposed on the base layer. In addition, the display element layer includes a first light sensor disposed in the first area and operating at a first operation frequency; and a second light sensor disposed in the second area and operating at a second operation frequency higher than the first operation frequency.
    Type: Grant
    Filed: July 19, 2023
    Date of Patent: November 18, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gyeong-Ub Moon, Chul Kim, Jongyeop An, Hyeon Jun Lee, Boram Choi
  • Publication number: 20250344959
    Abstract: A display device includes a display panel having a display area divided into a plurality of image display areas and a plurality of biometric information measurement areas, display pixels arranged in the plurality of image display areas and the plurality of biometric information measurement areas, light-sensing pixels arranged in the plurality of biometric information measurement areas, infrared light-emitting pixels arranged in the plurality of biometric information measurement areas, a display scan driver configured to drive the display pixels and the infrared light-emitting pixels to emit light, a light-sensing scan driver configured to drive the light-sensing pixels to sense light, and a main driver circuit configured to detect a user's pulse wave signals and measure biometric information using light-sensing signals received through the light-sensing pixels, wherein the plurality of biometric information measurement areas are formed in a long bar shape or a rectangular shape toward the main driver circuit.
    Type: Application
    Filed: December 4, 2024
    Publication date: November 13, 2025
    Inventor: Chul KIM
  • Patent number: 12450939
    Abstract: A display device includes display pixels and light sensing pixels in a display area. A display scan driver is configured to drive the display pixels to emit light. Alight sensing scan driver is configured to drive the light sensing pixels to sense light. A main driving circuit is configured to detect pulse wave signals and measure biometric information using the light sensing signals received through the light sensing pixels. The main driving circuit determines a normal pulse wave signal detection period or an inaccurate pulse wave signal detection period at biometric information measurement start period, changes the pulse wave signals detection conditions at the inaccurate pulse wave signal detection period to re-detect the pulse wave signals, and measures the biometric information with the normal pulse wave signal.
    Type: Grant
    Filed: April 22, 2024
    Date of Patent: October 21, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chul Kim
  • Publication number: 20250316214
    Abstract: A display device includes a display panel including a light-emitting pixel including a light-emitting element, and a light-sensing pixel including an organic photodiode, and configured to reset the organic photodiode to a reset voltage in response to a global reset signal, a data driver configured to provide a data signal to the light-emitting pixel, a scan driver configured to provide a scan signal to the light-emitting pixel and to the light-sensing pixel, and a readout circuit connected to the light-sensing pixel through a readout line, and configured to change at least one of the global reset signal or the reset voltage between a first sensing mode and a second sensing mode.
    Type: Application
    Filed: December 13, 2024
    Publication date: October 9, 2025
    Inventors: CHUL KIM, Jongyeop An, DONGWOOK YANG
  • Publication number: 20250302311
    Abstract: An apparatus for detecting biometric information includes a sub-display panel configured to drive display pixels to emit light, and generate light sensing signals by sensing light using light sensing pixels, a biometric information detection circuit configured to measure and detect biometric information using the light sensing signals received from the sub-display panel, a main display panel configured to display at least a portion of the biometric information, and a display driving circuit configured to control a driving timing of the light sensing pixels and the display pixels of the sub-display panel.
    Type: Application
    Filed: October 24, 2024
    Publication date: October 2, 2025
    Inventor: Chul KIM
  • Publication number: 20250281051
    Abstract: A display device includes a display panel including display pixels and light sensing pixels arranged in a display area of the display panel, a display scan driver configured to drive the display pixels to emit light, a light sensing scan driver configured to drive the light sensing pixels to sense light, and a main driving circuit. The main driving circuit is configured to obtain, using a biometric information detection device, a first reference pulse wave signal, a second reference pulse wave signal, a first pulse wave signal, and a second pulse wave signal, generate a first reference correction value and a second reference correction value based on the first reference pulse wave signal and the second reference pulse wave signal, respectively, and generate biometric information based on the first pulse wave signal, the second pulse wave signal, the first reference correction value, and the second reference correction value.
    Type: Application
    Filed: October 7, 2024
    Publication date: September 11, 2025
    Inventor: Chul KIM
  • Patent number: 12354526
    Abstract: A display device includes display pixels having light emitting elements arranged in a display area of a display panel and pixel drivers connected to the light emitting elements, light sensing pixels having light sensing elements arranged in the display area and sensing drivers connected to the light sensing elements, a display scan driver configured to sequentially supply display scan signals to the pixel drivers, a light sensing driver configured to sequentially supply sensing scan signals to the sensing drivers, a blood pressure detection circuit configured to measure a blood pressure of a user using light sensing signals received from the sensing drivers, and a display driving circuit configured to supply control signals to the display scan driver and the light sensing driver to control a light sensing signal detection timing of the light sensing pixels when a mode of the display device is switched to a blood pressure measurement mode.
    Type: Grant
    Filed: February 17, 2023
    Date of Patent: July 8, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chul Kim
  • Publication number: 20250204868
    Abstract: A display apparatus includes a display panel that includes a plurality of pixels and a panel driver that drives the display panel. The pixels include an adjacent horizontal pixel group that includes first to second pixel-rows and an adjacent vertical pixel group that includes first to second pixel-columns. The pixels include an emitting pixel that includes a light emitting element and a light sensing pixel that includes a photodiode. The panel driver drives the display panel to display a first guidance image that guides a user to place fingers on a first sensing region and a second sensing region of the display panel. The light sensing pixel outputs a sensing current that generates photoplethysmography (PPG) signals by sensing the fingers of the user. The first sensing region and the second sensing region are displayed on one of the adjacent horizontal pixel group or the adjacent vertical pixel group.
    Type: Application
    Filed: December 11, 2024
    Publication date: June 26, 2025
    Inventor: CHUL KIM
  • Patent number: 12340618
    Abstract: A display device is disclosed that includes a plurality of pixels and plurality of sensors. Each of the plurality of pixels includes a light emitting element. The plurality of sensors include first sensors disposed in a first area and second sensors disposed in a second area. Each of the plurality of sensors includes a light receiving element. The scan driver supplies a plurality of scan signals to the plurality of pixels and the plurality of sensors. In response to the plurality of scan signals, the readout circuit receives a first sensing signal from the first sensors, receives a second sensing signal from the second sensors, and removes noise from the first sensing signal using the second sensing signal to produce a final sensing signal.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: June 24, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventor: Chul Kim
  • Patent number: D1081684
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: July 1, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon Jun Lee, Chul Kim, Gyeong-Ub Moon, Jongyeop An, Dong Wook Yang
  • Patent number: D1104008
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: December 2, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon Jun Lee, Chul Kim, Gyeong-Ub Moon, Jongyeop An, Dong Wook Yang