Patents by Inventor Hee Chul Hwang

Hee Chul Hwang 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: 20240135744
    Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 25, 2024
    Inventors: Hyun Dae LEE, Il Nam KIM, Hyoung Wook JANG, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
  • Publication number: 20240128112
    Abstract: An overlay measurement device includes a transmission and receipt part and a processor connecting to the transmission and receipt part electrically. The processor obtains data transmitted from a user terminal through the transmission and receipt part, analyzes a recipe included in the data, and performs optimization of measurement options of a wafer, based on the recipe, after the recipe is analyzed.
    Type: Application
    Filed: July 28, 2023
    Publication date: April 18, 2024
    Applicant: AUROS TECHNOLOGY, INC.
    Inventors: Sol-Lee HWANG, Hee-Chul LIM, Dong-Won JUNG, Min-Ho LEE, Hyun-Kyoo SHON
  • Patent number: 11960214
    Abstract: There are provided a computer-readable storage medium and an overlay measurement device therefor that records a data structure for storing data controlling an operation of an overlay measurement device. In a computer-readable storage medium that records a data structure for storing data controlling an operation of an overlay measurement device in one embodiment, the data includes information of a recipe that is input to allow the overlay measurement device to measure characteristics of a wafer through a manager program installed in a user terminal, and unique information of the overlay measurement device.
    Type: Grant
    Filed: May 3, 2023
    Date of Patent: April 16, 2024
    Assignee: AUROS TECHNOLOGY, INC.
    Inventors: Sol-Lee Hwang, Dong-Won Jung, Hee-Chul Lim, Hyun-Kyoo Shon, Min-Ho Lee
  • Publication number: 20230402014
    Abstract: A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.
    Type: Application
    Filed: March 28, 2023
    Publication date: December 14, 2023
    Inventors: Il Nam KIM, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
  • Publication number: 20230397472
    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: Application
    Filed: August 16, 2023
    Publication date: December 7, 2023
    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
  • Publication number: 20230360427
    Abstract: A display device including: scan lines including first and second scan lines; pixels connected to the scan lines; photo sensors connected to some of the scan lines, the photo sensors including a first photo sensor connected to the first scan line and a readout line, and a second photo sensor connected to the second scan line and the readout line; a scan driver to provide scan signals to the scan lines; and a readout circuit to receive, through the readout line, detection signals which are outputted from the photo sensors in response to the scan signals, wherein, while the scan signals are provided to the first and second scan lines, the readout circuit samples a detection signal of one of the first photo sensor and the second photo sensor without sampling a detection signal of the other one of the first photo sensor and the second photo sensor.
    Type: Application
    Filed: April 18, 2023
    Publication date: November 9, 2023
    Inventors: Il Nam KIM, Seung Hyun MOON, Dong Wook YANG, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
  • Publication number: 20230320168
    Abstract: A display device includes a substrate having an active region and a first non-active region positioned around the active region. A plurality of pixels is disposed in the active region and emits light. A light source unit is disposed in the first non-active region and emits light. A plurality of optical sensors is disposed in the active region and senses incident light emitted by the light source unit. An encapsulation layer is disposed on the plurality of pixels, the plurality of optical sensors, and the light source unit. A scattering pattern layer is disposed on the encapsulation layer in the first non-active region and includes a plurality of holes.
    Type: Application
    Filed: January 6, 2023
    Publication date: October 5, 2023
    Inventors: Il Nam KIM, Seung Hyun MOON, Dong Wook YANG, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
  • Patent number: 11758793
    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 13, 2020
    Date of Patent: September 12, 2023
    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: 11568036
    Abstract: A display device including a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and a fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.
    Type: Grant
    Filed: November 7, 2021
    Date of Patent: January 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Sang Park, Jin Oh Kwag, Il Nam Kim, Ji Hun Ryu, Seung Hyun Moon, Bong Hyun You, Jong Hyun Lee, Hee Chul Hwang
  • Patent number: 11488412
    Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: November 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Hee Chul Hwang, Deok Hwa Woo, Young Eun Lee
  • Publication number: 20220058254
    Abstract: A display device including a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and a fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.
    Type: Application
    Filed: November 7, 2021
    Publication date: February 24, 2022
    Inventors: Won Sang PARK, Jin Oh KWAG, ILNAM KIM, Ji Hun RYU, Seung Hyun MOON, Bong Hyun YOU, Jong Hyun LEE, Hee Chul HWANG
  • Publication number: 20210365661
    Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 25, 2021
    Inventors: Hyun Dae LEE, Seung Hyun MOON, Dong Wook YANG, Hee Chul HWANG, Deok Hwa WOO, Young Eun LEE
  • Patent number: 11170090
    Abstract: A display device includes a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: November 9, 2021
    Assignee: Samsung Display Co., LTD.
    Inventors: Won Sang Park, Jin Oh Kwag, Il Nam Kim, Ji Hun Ryu, Seung Hyun Moon, Bong Hyun You, Jong Hyun Lee, Hee Chul Hwang
  • Patent number: 11080507
    Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: August 3, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Hee Chul Hwang, Deok Hwa Woo, Young Eun Lee
  • Patent number: 11024241
    Abstract: A timing controller may include a first compensator configured to generate second data by optically compensating for first data, based on compensation data, a first compensation memory configured to store the compensation data, a second compensator configured to generate image data by compensating for a lifetime of the second data, based on accumulated data of the second data, and a second compensation memory configured to store the accumulated data and the compensation data.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Bit Na Lee, Hee Chul Hwang
  • Publication number: 20210142029
    Abstract: A display device includes a display panel including a plurality of pixels configured to display an image, a photo sensor on one surface of the display panel to sense light, and a fingerprint detector configured to control a fake determination image pattern of a fingerprint sensing area of the display panel configured to sense a fingerprint, and to perform fingerprint authentication and fake fingerprint determination, based on a sensing signal supplied from the photo sensor.
    Type: Application
    Filed: July 13, 2020
    Publication date: May 13, 2021
    Inventors: Seung Hyun MOON, Yun Ho KIM, Jin Oh KWAG, Won Sang PARK, Bong Hyun YOU, Keum Dong JUNG, Chul KIM, Jun Hee MOON, Deok Hwa WOO, Hee Chul HWANG
  • Publication number: 20210125577
    Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.
    Type: Application
    Filed: July 14, 2020
    Publication date: April 29, 2021
    Inventors: Seok Ha HONG, Dong Joon KWAG, Hyung Jin KIM, Ji-Eun PARK, Hye-Sang PARK, Hyun Seuk YOO, Hee Chul HWANG
  • Publication number: 20210117639
    Abstract: The display device comprises: a display panel displaying an image, a light blocking layer disposed under the display panel and comprising a plurality of holes, a fingerprint sensing layer disposed under the light blocking layer and comprising a plurality of fingerprint sensors receiving reflected light passing through the plurality of hole and generating a sensing signal, and a sensor driver controlling operations of the plurality of fingerprint sensors. The sensor driver compares fingerprint data generated based on a sensing signal generated from reflected light by a user's fingerprint with prestored reference data to generate a fingerprint image.
    Type: Application
    Filed: July 16, 2020
    Publication date: April 22, 2021
    Inventors: Dong Wook YANG, Hyun Dae Lee, Seung Hyun Moon, Young Eun Lee, Hee Chul Hwang
  • Publication number: 20210073507
    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: Application
    Filed: August 13, 2020
    Publication date: March 11, 2021
    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
  • Publication number: 20210064839
    Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.
    Type: Application
    Filed: July 30, 2020
    Publication date: March 4, 2021
    Inventors: Hyun Dae LEE, Seung Hyun MOON, Dong Wook YANG, Hee Chul HWANG, Deok Hwa WOO, Young Eun LEE