Patents by Inventor Hyeon-Do Park

Hyeon-Do Park 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: 11749659
    Abstract: An input sensing device including: a power line; driving lines; a first signal line including sub-lines; a second signal line connected to the sub-lines; and sensor pixels connected to the power line, the driving lines, and the first signal line, wherein at least one sensor pixel of the sensor pixels includes: an optical sensor that transfers a photoelectrically converted charge from the power line to a first node in response to a driving signal provided through a first driving line of the driving lines; a first transistor connected between the first node and a first sub-line among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: September 5, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Chul Lee, Hyeon Do Park, In Soo Wang
  • Publication number: 20230154909
    Abstract: An input sensing device including: a power line; driving lines; a first signal line including sub-lines; a second signal line connected to the sub-lines; and sensor pixels connected to the power line, the driving lines, and the first signal line, wherein at least one sensor pixel of the sensor pixels includes: an optical sensor that transfers a photoelectrically converted charge from the power line to a first node in response to a driving signal provided through a first driving line of the driving lines; a first transistor connected between the first node and a first sub-fine among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line,
    Type: Application
    Filed: January 3, 2023
    Publication date: May 18, 2023
    Inventors: Hyo Chul LEE, Hyeon Do Park, In Soo Wang
  • Patent number: 11544956
    Abstract: An input sensing device including: a power line; driving lines; a first signal line including sub-lines; a second signal line connected to the sub-lines; and sensor pixels connected to the power line, the driving lines, and the first signal line, wherein at least one sensor pixel of the sensor pixels includes: an optical sensor that transfers a photoelectrically converted charge from the power line to a first node in response to a driving signal provided through a first driving line of the driving lines; a first transistor connected between the first node and a first sub-line among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: January 3, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Chul Lee, Hyeon Do Park, In Soo Wang
  • Patent number: 11404498
    Abstract: A display device includes a display unit displaying an image, a fingerprint sensing unit disposed on one surface of the display unit and including fingerprint sensing pixels to sense a fingerprint, and a readout circuit providing a selection signal to the fingerprint sensing unit to select a predetermined amount of fingerprint sensing pixels from the fingerprint sensing pixels as a sensing area and receiving a fingerprint sensing signal from the sensing area. The readout circuit accumulates the fingerprint sensing signal provided from the fingerprint sensing pixels in the sensing area during a test mode and calculates a compensation value based on a difference between the accumulated fingerprint sensing signal and a reference value.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: August 2, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon-Do Park, Hyo-chul Lee
  • Publication number: 20210326558
    Abstract: An input sensing device including: a power line; driving lines; a first signal line including sub-lines; a second signal line connected to the sub-lines; and sensor pixels connected to the power line, the driving lines, and the first signal line, wherein at least one sensor pixel of the sensor pixels includes: an optical sensor that transfers a photoelectrically converted charge from the power line to a first node in response to a driving signal provided through a first driving line of the driving lines; a first transistor connected between the first node and a first sub-line among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line.
    Type: Application
    Filed: March 2, 2021
    Publication date: October 21, 2021
    Inventors: Hyo Chul LEE, Hyeon Do PARK, In Soo WANG
  • Publication number: 20210167135
    Abstract: A display device includes a display unit displaying an image, a fingerprint sensing unit disposed on one surface of the display unit and including fingerprint sensing pixels to sense a fingerprint, and a readout circuit providing a selection signal to the fingerprint sensing unit to select a predetermined amount of fingerprint sensing pixels from the fingerprint sensing pixels as a sensing area and receiving a fingerprint sensing signal from the sensing area. The readout circuit accumulates the fingerprint sensing signal provided from the fingerprint sensing pixels in the sensing area during a test mode and calculates a compensation value based on a difference between the accumulated fingerprint sensing signal and a reference value.
    Type: Application
    Filed: August 17, 2020
    Publication date: June 3, 2021
    Inventors: Hyeon-Do PARK, Hyo-chul LEE
  • Patent number: 10896636
    Abstract: A display apparatus includes a display panel including a plurality of first gate lines, a first gate driver connected to first ends of the plurality of first gate lines, a second gate driver connected to second ends of the plurality of first gate lines, a feedback line connected adjacent to the first end of one of the plurality of first gate lines, and a gate delay sensing circuit connected to the feedback line. The gate delay sensing circuit includes a time-to-digital converter and a digital comparator. The time-to-digital converter converts an activation time of a feedback gate signal into a digital activation value. The feedback gate signal is retrieved from the feedback line. The digital comparator generates a digital delay value based on the digital activation value. The digital delay value indicates resistive-capacitive (“RC”) delay of the one of the plurality of first gate lines connected to the feedback line.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: January 19, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kihyun Pyun, Hyeon-Do Park
  • Publication number: 20200234630
    Abstract: A display apparatus includes a display panel including a plurality of first gate lines, a first gate driver connected to first ends of the plurality of first gate lines, a second gate driver connected to second ends of the plurality of first gate lines, a feedback line connected adjacent to the first end of one of the plurality of first gate lines, and a gate delay sensing circuit connected to the feedback line. The gate delay sensing circuit includes a time-to-digital converter and a digital comparator. The time-to-digital converter converts an activation time of a feedback gate signal into a digital activation value. The feedback gate signal is retrieved from the feedback line. The digital comparator generates a digital delay value based on the digital activation value. The digital delay value indicates resistive-capacitive (“RC”) delay of the one of the plurality of first gate lines connected to the feedback line.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 23, 2020
    Inventors: KIHYUN PYUN, HYEON-DO PARK
  • Patent number: 10714563
    Abstract: The present disclosure relates to a display device. The display device according to an exemplary embodiment includes a display area comprising a plurality of pixels, a peripheral area that is disposed outside the display area, and a wiring portion in the peripheral area. The wiring portion includes a plurality of signal lines that are adjacent to each other and are arranged along a first direction and each extends in a second direction that is different from the first direction. The plurality of signal lines are arranged in an order of average voltages of signals respectively transmitted by the plurality of signal lines during one frame.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 14, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hyun Lee, Hyeon-Do Park, Ha Gyeong Song, Hyun Young Choi
  • Patent number: 10650721
    Abstract: A display apparatus includes a display panel including a plurality of first gate lines, a first gate driver connected to first ends of the plurality of first gate lines, a second gate driver connected to second ends of the plurality of first gate lines, a feedback line connected adjacent to the first end of one of the plurality of first gate lines, and a gate delay sensing circuit connected to the feedback line. The gate delay sensing circuit includes a time-to-digital converter and a digital comparator. The time-to-digital converter converts an activation time of a feedback gate signal into a digital activation value. The feedback gate signal is retrieved from the feedback line. The digital comparator generates a digital delay value based on the digital activation value. The digital delay value indicates resistive-capacitive (“RC”) delay of the one of the plurality of first gate lines connected to the feedback line.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 12, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kihyun Pyun, Hyeon-Do Park
  • Publication number: 20190198598
    Abstract: The present disclosure relates to a display device. The display device according to an exemplary embodiment includes a display area comprising a plurality of pixels, a peripheral area that is disposed outside the display area, and a wiring portion in the peripheral area. The wiring portion includes a plurality of signal lines that are adjacent to each other and are arranged along a first direction and each extends in a second direction that is different from the first direction. The plurality of signal lines are arranged in an order of average voltages of signals respectively transmitted by the plurality of signal lines during one frame.
    Type: Application
    Filed: October 30, 2018
    Publication date: June 27, 2019
    Inventors: Dong-Hyun LEE, Hyeon-Do PARK, Ha Gyeong SONG, Hyun Young CHOI
  • Publication number: 20180315369
    Abstract: A display apparatus includes a display panel including a plurality of first gate lines, a first gate driver connected to first ends of the plurality of first gate lines, a second gate driver connected to second ends of the plurality of first gate lines, a feedback line connected adjacent to the first end of one of the plurality of first gate lines, and a gate delay sensing circuit connected to the feedback line. The gate delay sensing circuit includes a time-to-digital converter and a digital comparator. The time-to-digital converter converts an activation time of a feedback gate signal into a digital activation value. The feedback gate signal is retrieved from the feedback line. The digital comparator generates a digital delay value based on the digital activation value. The digital delay value indicates resistive-capacitive (“RC”) delay of the one of the plurality of first gate lines connected to the feedback line.
    Type: Application
    Filed: April 4, 2018
    Publication date: November 1, 2018
    Inventors: KIHYUN PYUN, HYEON-DO PARK
  • Patent number: 9633618
    Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 25, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Sun Kwak, Kyung Won Kang, Ji Hyun Kim, Hyeon-Do Park, Won Jin Seo, Jun-Ho Hwang
  • Patent number: 9262979
    Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ho In Kim, Kyung Won Kang, Young-Sun Kwak, Sang An Kwon, Hyeon-Do Park, Won Jin Seo, Myung Bo Sim, Yoon Seop Shim
  • Publication number: 20150091949
    Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.
    Type: Application
    Filed: March 19, 2014
    Publication date: April 2, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ho In KIM, Kyung Won KANG, Young-Sun KWAK, Sang An KWON, Hyeon-Do PARK, Won Jin SEO, Myung Bo SIM, Yoon Seop SHIM
  • Publication number: 20140347384
    Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Young-Sun Kwak, Kyung Won Kang, Ji Hyun Kim, Hyeon-Do Park, Won Jin Seo, Jun-Ho Hwang