Patents by Inventor Hyun-Wook Cho

Hyun-Wook Cho 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: 20220236830
    Abstract: A circuit board including: a body part including a driving chip; a pad part including a plurality of pads connected to a plurality of lines, wherein the pad part extends in a first direction from the body part; and a line part including a first line of the lines, wherein the first line is electrically connected to the driving chip, the line part extends in the first direction from the body part, and the line part is bendable with respect to a bending line.
    Type: Application
    Filed: November 22, 2021
    Publication date: July 28, 2022
    Inventors: HYUN-WOOK CHO, MIN-HONG KIM, SANGKOOK KIM, TAEJOON KIM, JUNGMOK PARK
  • Patent number: 11366547
    Abstract: A display device includes pixels to display one or more images in display frame periods and sensors overlapping with the pixels. The sensors sense one or more user inputs in sensing frame periods that are shorter in duration than the display frame periods. A first sensing frame period includes a first non-sensing period that substantially entirely overlaps with a first display frame period. A second sensing frame period includes a second non-sensing period that overlaps with a portion of the first display frame period and a portion of a second display frame period. The first non-sensing period and the second non-sensing period have different durations.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Wook Cho, Min Hong Kim, Tae Joon Kim, Jae Hyun Park, Jung Mok Park, Bo Geun Yuk
  • Patent number: 11360615
    Abstract: An electronic device may include a display panel, and an input sensor, in which a first region, a second region enclosing the first region, and a third region enclosing the second region are defined, on the display panel and including sensing electrodes including a first electrode including a first main electrode and a first subsidiary electrode, and a second electrode adjacent the first electrode, and including a second main electrode and a second subsidiary electrode between the first main electrode and the first subsidiary electrode in the first region.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: June 14, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Wook Cho, Min-Hong Kim, Taejoon Kim, Jungmok Park
  • Patent number: 11347357
    Abstract: An electronic device includes a first electrode, a second electrode, and a third electrode. The first electrode includes a first boundary side extending in a direction. The second electrode includes a second boundary side extending in the direction. The third electrode is disposed between and spaced apart from the first electrode and the second electrode. The third electrode includes a first side facing the first boundary side and a second side facing the second boundary. The first side and the second side have shapes that are asymmetric to each other with respect to a center axis extending in the direction.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: May 31, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sanghyun Jun, Hwan-Hee Jeong, Kicheol Kim, Jaehyun Lee, Hyun-wook Cho
  • Patent number: 11340746
    Abstract: An electronic device includes a display unit including an active area configured to display an image, a peripheral area adjacent to the active area, and an input sensing unit disposed on the display unit within the active area. The input sensing unit includes a first sensing electrode disposed in the active area and a second sensing electrode spaced apart from the first sensing electrode and disposed in the active area.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: May 24, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eunsol Seo, Hyun-Wook Cho, Jaewoo Choi, Taejoon Kim
  • Publication number: 20220137743
    Abstract: A display device includes: a display layer; a sensor layer on the display layer; a sensor driving part to provide a transmission signal to the sensor layer; and a display driving part to drive the display layer. The display layer includes: a plurality of pixels; first scan lines electrically connected to a first group of pixels; second scan lines electrically connected to a second group of pixels; and data lines electrically connected to the plurality of pixels. The display driving part is to drive the first scan lines, the second scan lines, and the data lines, and to alternately provide a pixel data signal and a compensation signal to data lines corresponding to the first group of pixels and data lines corresponding to the second group of pixels, the compensation signal being a signal that is complementary to at least one of the pixel data signal or the transmission signal.
    Type: Application
    Filed: June 11, 2021
    Publication date: May 5, 2022
    Inventors: SANGHYUN LIM, HYUN-WOOK CHO
  • Publication number: 20220137774
    Abstract: An electronic device includes: a sensor layer including a first area and a second area adjacent to the first area; a first driving circuit providing a first driving signal to the sensor layer and receiving first data output from the first area of the sensor layer; and a second driving circuit providing a second driving signal to the sensor layer and receiving second data output from the second area of the sensor layer. The second driving circuit provides intermediate data to the first driving circuit. The intermediate data is obtained based on the second data, and the first driving circuit generates result data based on the first data and the intermediate data.
    Type: Application
    Filed: August 5, 2021
    Publication date: May 5, 2022
    Inventors: Jinwoo Park, Taejoon Kim, Jungmok Park, Bo-Hwan Lee, Hyun-Wook Cho
  • Publication number: 20220129133
    Abstract: A display device includes a display panel, and an input sensor disposed on the display panel. The input sensor includes a detection electrode in an active area of the input sensor, a signal line connected to the detection electrode, a slave chip connected to the signal line and overlapping a non-active area adjacent to the active area, a master chip overlapping the non-active area, and a plurality of connection lines connecting the master chip and the slave chip so that a sensed signal of the detection electrode is delivered to the master chip through the slave chip.
    Type: Application
    Filed: October 14, 2021
    Publication date: April 28, 2022
    Inventors: Hyun-Wook CHO, Min-Hong KIM, Taejoon KIM, Jungmok PARK, Jinwoo PARK
  • Publication number: 20220121309
    Abstract: An electronic device includes a display panel, an input sensor disposed on the display panel and including a sensing electrode, a first signal line connected to the sensing electrode, and a second signal line connected to the sensing electrode, and a circuit board electrically connected to the input sensor. The circuit board includes a first group signal line electrically connected to the first signal line, a second group signal line electrically connected to the first group signal line and to the second signal line, a first inspection signal line electrically connected to the first group signal line, and a second inspection signal line electrically connected to the second group signal line.
    Type: Application
    Filed: August 11, 2021
    Publication date: April 21, 2022
    Inventors: JAEHYUN PARK, Min-Hong Kim, Jungmok Park, Jiyeong Lee, Hyun-Wook Cho
  • Publication number: 20220107703
    Abstract: A display device includes a display panel including pixels, a touch panel including electrodes, a proximity sensor which is adjacent to the touch panel and detects proximity with respect to an object based on a capacitance variation, a display driver which drives the display panel and a touch controller which drives the touch panel and the proximity sensor. Here, the touch controller provides a negative voltage to the proximity sensor when the proximity sensor detects that the object approaches the proximity sensor such that a shortest distance from the object to the proximity sensor is equal to or less than a first reference distance.
    Type: Application
    Filed: September 17, 2021
    Publication date: April 7, 2022
    Inventors: JUNSEONG LEE, BOGEUN YUK, MIN-HONG KIM, TAEJOON KIM, EUNGKWAN LEE, HYUN-WOOK CHO
  • Publication number: 20220108660
    Abstract: An electronic device includes display driver and a sensor driver. The display driver drives a display layer and provide a grayscale voltage to a data lines. The sensor driver is synchronized with the display driver to drive a sensor layer, and operates in a first sensing mode and a second sensing mode. In the first sensing mode, the sensor driver senses an input through the sensor layer based on a first timing. In the second sensing mode, the sensor driver senses an input through the sensor layer based on a second timing different from the first timing.
    Type: Application
    Filed: July 7, 2021
    Publication date: April 7, 2022
    Inventors: Hyun-Wook Cho, Min-Hong Kim, Taejoon Kim, Jungmok Park
  • Publication number: 20220107696
    Abstract: An electronic device including: a display layer; and a sensor layer that includes: first electrodes in a sensing area and having different lengths; second electrodes in the sensing area; first cross electrodes in the sensing area; second cross electrodes in the sensing area and having different lengths; pads in a. peripheral area; first lines extended from the first electrodes at a first side of the sensing area towards the pads; second lines extended from the second electrodes at a second. side of the sensing area towards the pads; first cross lines extending from the first cross electrodes towards the pads; and second cross lines extending from the second cross electrodes towards the pads, the first lines being different from the second lines in number, and the first cross lines being different from the second cross lines in number.
    Type: Application
    Filed: June 28, 2021
    Publication date: April 7, 2022
    Inventors: JUNGMOK PARK, TAE YONG EOM, HYUN-WOOK CHO, DONGJIN MOON, YERI JEONG
  • Publication number: 20220100320
    Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 31, 2022
    Inventors: JAE WOO CHOI, TAE JOON KIM, EUN SOL SEO, HYUN WOOK CHO
  • Publication number: 20220093031
    Abstract: A display device includes pixels to display one or more images in display frame periods and sensors overlapping with the pixels. The sensors sense one or more user inputs in sensing frame periods that are shorter in duration than the display frame periods. A first sensing frame period includes a first non-sensing period that substantially entirely overlaps with a first display frame period. A second sensing frame period includes a second non-sensing period that overlaps with a portion of the first display frame period and a portion of a second display frame period. The first non-sensing period and the second non-sensing period have different durations.
    Type: Application
    Filed: May 12, 2021
    Publication date: March 24, 2022
    Inventors: Hyun Wook Cho, Min Hong Kim, Tae Joon Kim, Jae Hyun Park, Jung Mok Park, Bo Geun Yuk
  • Publication number: 20220093694
    Abstract: A display device includes a touch sensor, a touch driver, and display driver. The touch driver drives the touch sensor at a first frequency, provides touch driving signals to touch electrodes during a touch sensing period of a touch frame period, and stops providing the touch driving signals during a touch waiting period of the touch frame period. The display drivers drives a display panel at a second frequency lower than the first frequency in a first mode, provides scan signals to pixels during a display period of a display frame period, and stops providing the scan signals during a display waiting period of the display frame period. When the display driver switches from the first mode to a second mode, the display driver drives the display at a third frequency lower than the second frequency, and the touch driver increases the touch waiting period of the touch frame period.
    Type: Application
    Filed: August 19, 2021
    Publication date: March 24, 2022
    Inventors: JAE HYUN PARK, Tae Joon KIM, Jung Mok PARK, Jung Goo LEE, Ji Yeong LEE, Hyun Wook CHO
  • Publication number: 20220057878
    Abstract: A display is provided. A display panel including a first substrate, a second substrate an active element layer disposed on the first substrate, and a sealing member coupling the first substrate and the second substrate, and a touch member disposed on the display panel and including a touch signal line and a touch antistatic line, wherein the touch antistatic line is disposed outside the touch signal line and at least partially overlaps the sealing member, and the touch antistatic line has light transmittance higher than light transmittance of the touch signal line.
    Type: Application
    Filed: August 16, 2021
    Publication date: February 24, 2022
    Inventors: Hyun Wook Cho, Min Hong Kim, Tae Joon Kim, Jung Mok Park
  • Publication number: 20220020333
    Abstract: A display device includes: a plurality of pixels; a scan driver configured to supply scan signals of a turn-on level to the scan lines at a cycle of a horizontal synchronization signal; a plurality of first sensors and a plurality of second sensors overlapping at least some of the pixels; and a sensor driver configured to concurrently supply first sensing signals to the first sensors during a first sensing period, to concurrently supply second sensing signals to the second sensors during a second sensing period, and to sequentially supply third sensing signals to the first sensors during a third sensing period, wherein the number of the first sensing signals is an integer greater than 2, wherein the first sensing signals are divided into first groups, and wherein an initial first sensing signal in each of the first groups is synchronized with the horizontal synchronization signal.
    Type: Application
    Filed: May 28, 2021
    Publication date: January 20, 2022
    Inventors: Hyun Wook CHO, Sang Hyun LIM, Jun Seong LEE
  • Publication number: 20220011918
    Abstract: A circuit board includes a base substrate, and a connection structure disposed on the base substrate, and connected to the base substrate by an accessing part. The connection structure includes a first connection electrode, a second connection electrode disposed in a same layer as the first connection electrode, a third connection electrode connected to the first connection electrode on the first connection electrode, and a fourth connection electrode connected to the second connection electrode on the second connection electrode, and disposed in a same layer as the third connection electrode.
    Type: Application
    Filed: April 28, 2021
    Publication date: January 13, 2022
    Inventors: MIN-HONG KIM, HYUN-WOOK CHO, TAEJOON KIM, JAEHYUN PARK, JUNGMOK PARK, BOGEUN YUK
  • Patent number: 11195447
    Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: December 7, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Woo Choi, Tae Joon Kim, Eun Sol Seo, Hyun Wook Cho
  • Publication number: 20210373703
    Abstract: An electronic device may include a display panel, and an input sensor, in which a first region, a second region enclosing the first region, and a third region enclosing the second region are defined, on the display panel and including sensing electrodes including a first electrode including a first main electrode and a first subsidiary electrode, and a second electrode adjacent the first electrode, and including a second main electrode and a second subsidiary electrode between the first main electrode and the first subsidiary electrode in the first region.
    Type: Application
    Filed: February 19, 2021
    Publication date: December 2, 2021
    Inventors: Hyun-Wook CHO, Min-Hong KIM, Taejoon KIM, Jungmok PARK