Patents by Inventor Yunhwan Park

Yunhwan 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).

  • Publication number: 20230395014
    Abstract: A display device includes a display panel including a first sub-pixel which displays a first color and is connected to a first data line and a gate line, a gate driver which provides a gate signal to the gate line, a source driver which provides a data voltage to the first data line in a display scan period of a frame and provides a first self-scan voltage to the first data line in a self-scan period of the frame, and a timing controller which calculates a first ratio of each of grayscale values of first color image data for the first color of the frame and determines the first self-scan voltage based on the first ratio.
    Type: Application
    Filed: April 28, 2023
    Publication date: December 7, 2023
    Inventors: WOORI SEO, YUNHWAN PARK, YONGJAE KIM, YOONJEE SHIN
  • Publication number: 20230363213
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Application
    Filed: July 10, 2023
    Publication date: November 9, 2023
    Inventors: Injun BAE, Chulho Kim, Yunhwan Park, Jin Jeon, Beohmrock Choi
  • Patent number: 11737319
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: August 22, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Injun Bae, Chulho Kim, Yunhwan Park, Jin Jeon, Beohmrock Choi
  • Publication number: 20230154389
    Abstract: A display device includes a pixel connected to a first gate line, an emission control line, a bias gate line, and a data line. A gate driver is configured to supply a first gate signal to the first gate line in an address scan period and configured to supply a bias write gate signal to the bias gate line in a self-scan period. An emission driver is configured to supply an emission control signal in the address scan period and in a self-scan period. A data driver is configured to supply a first data voltage to the data line in the address scan period and configured to supply a second data voltage to the data line in the self-scan period. The second data voltage is set based on the first data voltage.
    Type: Application
    Filed: November 15, 2022
    Publication date: May 18, 2023
    Inventors: YUNHWAN PARK, YONGJAE KIM, JIHYE KIM, YOONJEE SHIN
  • Publication number: 20220157906
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 19, 2022
    Inventors: Injun BAE, Chulho KIM, Yunhwan PARK, Jin JEON, Beohmrock CHOI
  • Patent number: 11271055
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Injun Bae, Chulho Kim, Yunhwan Park, Jin Jeon, Beohmrock Choi
  • Patent number: 11227907
    Abstract: A display apparatus has an enlarged display area so that an image can be displayed in a sensor area. The display apparatus includes: a first base layer that includes a display area that includes a plurality of main pixels and a sensor area that includes a plurality of auxiliary pixels and a transmission portion; a conductive layer positioned on the first base layer and that corresponds to the plurality of auxiliary pixels; and a second base layer positioned on the first base layer with the conductive layer positioned between the second base layer and the first base layer. A resolution of an image displayed by the sensor area is lower than a resolution of an image displayed by the display area.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Injun Bae, Chulho Kim, Yunhwan Park, Woori Seo, Dongbum Lee, Jin Jeon
  • Publication number: 20200286972
    Abstract: A display panel includes: a substrate that includes a display area and a sensor area, where the display area includes a main pixel and the sensor area includes an auxiliary pixel, where the main pixel is electrically connected to a main pixel circuit and the auxiliary pixel is electrically connected to an auxiliary pixel circuit, where the auxiliary pixel circuit includes a first auxiliary thin film transistor that includes a first semiconductor layer that includes an oxide semiconductor material and a first gate electrode that overlaps the first semiconductor layer, and a second auxiliary thin film transistor that including a second semiconductor layer that includes Low Temperature Poly-Silicon (LTPS) and a second gate electrode that overlaps the second semiconductor layer.
    Type: Application
    Filed: December 18, 2019
    Publication date: September 10, 2020
    Inventors: WOORI SEO, Injun Bae, Donghwi Kim, Chulho Kim, Yunhwan Park, Dongbeom Lee, Jin Jeon
  • Publication number: 20200235187
    Abstract: A display apparatus has an enlarged display area so that an image can be displayed in a sensor area. The display apparatus includes: a first base layer that includes a display area that includes a plurality of main pixels and a sensor area that includes a plurality of auxiliary pixels and a transmission portion; a conductive layer positioned on the first base layer and that corresponds to the plurality of auxiliary pixels; and a second base layer positioned on the first base layer with the conductive layer positioned between the second base layer and the first base layer. A resolution of an image displayed by the sensor area is lower than a resolution of an image displayed by the display area.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 23, 2020
    Inventors: INJUN BAE, CHULHO KIM, YUNHWAN PARK, WOORI SEO, DONGBUM LEE, JIN JEON
  • Publication number: 20200227494
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Application
    Filed: August 26, 2019
    Publication date: July 16, 2020
    Inventors: Injun Bae, Chulho Kim, Yunhwan Park, Jin Jeon, Beohmrock Choi