Patents by Inventor Jin-Wook Yang

Jin-Wook Yang 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: 20240105104
    Abstract: A pixel includes: a light emitting element; a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is to be applied, and a third node electrically connected to the light emitting element; and a bias control transistor configured to be controlled in operating timing thereof by a bias control signal, and configured to switch electrical connection between the second node and a bias power line for transmitting a bias voltage. In one frame period, a voltage level of the bias voltage to be applied to the second node sequentially increases.
    Type: Application
    Filed: April 12, 2023
    Publication date: March 28, 2024
    Inventors: Se Hyuk PARK, Hong Soo KIM, Young Ha SOHN, Jin Wook YANG, Dong Gyu LEE, Jae Hyeon JEON
  • Publication number: 20240096265
    Abstract: A pixel includes: a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is applied, and a third node electrically connected to the light emitting element; a first emission control transistor having an on-off timing controlled by a first emission control signal; and a second emission control transistor having an on-off timing controlled by a second emission control signal. A time interval exists between a time at which the first emission control signal having a turn-on level is input such that a voltage of the second node is dropped from a bias voltage having a voltage level higher than a voltage level of the first power voltage and a time at which the second emission control signal having a turn-on level is input.
    Type: Application
    Filed: April 12, 2023
    Publication date: March 21, 2024
    Inventors: Young Ha SOHN, Se Hyuk PARK, Jin Wook YANG, Dong Gyu LEE, Jae Hyeon JEON
  • Patent number: 11935453
    Abstract: A display device includes four pixel arrays, a data driver, and a demultiplexer. The data driver is electrically connected to first and second data output lines. The demultiplexer electrically connects first and second data lines to the first data output line and electrically connects third and fourth data lines to the second data output line. The first to fourth pixel arrays are adjacent to the first to fourth data lines, respectively. Each of the first to fourth pixel arrays includes first and second color pixels. The first color pixels in the second pixel array are connected to the second data line, the second color pixels in the second pixel array are connected to the third data line, the second color pixels in the third pixel array are connected to the third data line, and the first color pixels in the third pixel array are connected to the second data line.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sehyuk Park, Jinyoung Roh, Woomi Bae, Hae-Kwan Seo, Youngha Sohn, Jin-Wook Yang
  • Publication number: 20240078963
    Abstract: A pixel connected to a first scan line includes a light-emitting element including an anode and a cathode, a first transistor including a first electrode, a second electrode, and a gate electrode connected to a first node, a first capacitor connected between the first node and a second node, a second transistor connected between the second electrode of the first transistor and the first node including a gate electrode connected to the first scan line, a third transistor including a first electrode, a second electrode connected to the second node, and a gate electrode connected to the first scan line, and a fourth transistor including a first electrode connected to a first driving voltage line, a second electrode connected to the first electrode of the first transistor, and a gate electrode connected to the first scan line.
    Type: Application
    Filed: May 11, 2023
    Publication date: March 7, 2024
    Inventors: JIN-WOOK YANG, YU-CHOL KIM, DONGGYU LEE, JAEKEUN LIM, JAE-HYEON JEON
  • Patent number: 11922866
    Abstract: A pixel includes: a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is applied, and a third node electrically connected to the light emitting element; a first emission control transistor having an on-off timing controlled by a first emission control signal; and a second emission control transistor having an on-off timing controlled by a second emission control signal. A time interval exists between a time at which the first emission control signal having a turn-on level is input such that a voltage of the second node is dropped from a bias voltage having a voltage level higher than a voltage level of the first power voltage and a time at which the second emission control signal having a turn-on level is input.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Ha Sohn, Se Hyuk Park, Jin Wook Yang, Dong Gyu Lee, Jae Hyeon Jeon
  • Patent number: 11915639
    Abstract: A display panel of a display device is divided into a first display region and a second display region. The second display region includes a boundary region adjacent to the first display region and a non-boundary region opposite to the first display region with respect to the boundary region. The driving controller outputs the voltage control signal, such that the first voltage in a first high voltage level and the second voltage in a first low voltage level are generated when the first display region is driven. The driving controller outputs the voltage control signal, such that the first voltage in a second high voltage level lower than the first high voltage level and the second voltage in a second low voltage level higher than the first low voltage level are generated, when the non-boundary region of the second display region is driven.
    Type: Grant
    Filed: February 12, 2023
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taehoon Kim, Seon Young Choi, Sangan Kwon, Soon-Dong Kim, Jin-Wook Yang, Changnoh Yoon
  • Publication number: 20240062694
    Abstract: A display system includes a host processor configured to provide frame data using a scan order, and a display device including a display panel including pixels and a display panel driver configured to refresh the pixels according using the frame data and to provide the scan order to the host processor.
    Type: Application
    Filed: March 28, 2023
    Publication date: February 22, 2024
    Inventors: DONGGYU LEE, SEHYUK PARK, JIN-WOOK YANG, JAE-HYEON JEON
  • Publication number: 20240062704
    Abstract: A display panel of a display device includes: first light emitting elements located in a first row, second light emitting elements located in a second row adjacent to the first row, first pixel circuits located in the first row, and second pixel circuits located in the second row. Each of the first pixel circuits drives a first light emitting element, located in a column the same as a column in which the each of the first pixel circuits is located, among the first light emitting elements. At least one second pixel circuit of the second pixel circuits drives a second light emitting element, located in a column different from a column in which the at least one second pixel circuit is located, among the second light emitting elements.
    Type: Application
    Filed: April 19, 2023
    Publication date: February 22, 2024
    Inventors: JAEKEUN LIM, JIN-WOOK YANG, BON-SEOG GU, JINYOUNG ROH, HAE-KWAN SEO
  • Patent number: 11908380
    Abstract: A display device includes a display panel including a first pixel connected to a first initialization scan line and a first compensation scan line and a second pixel connected to a second initialization scan line and a second compensation scan line, a scan driving circuit which provides a first initialization scan signal to the first initialization scan line and the second initialization scan line in common and provides a first compensation scan signal and a second compensation scan signal to the first compensation scan line and the second compensation scan line, and a driving controller which controls the scan driving circuit. A delay time from a time point at which the first initialization scan signal transitions from an active level to an inactive level to a time point at which the first compensation scan signal transitions from the inactive level to the active level is less than one horizontal period.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: February 20, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Dong Kim, Taehoon Kim, Jin-Wook Yang, Changnoh Yoon
  • Publication number: 20240054957
    Abstract: A display device includes: a data driver for supplying a data signal to each of a plurality of data lines; and a pixel unit including a plurality of sub-pixels. The pixel unit further includes one dummy data line disposed separate from a data line of a first column among the data lines. The data line of the first column is connected to sub-pixels disposed on odd-numbered pixel rows among sub-pixels disposed on a first pixel column, and is connected to sub-pixels disposed on even-numbered pixel rows among sub-pixels disposed on a third pixel column. The dummy data line is connected to sub-pixels disposed on the even-numbered pixel rows among the sub-pixels disposed on the first pixel column.
    Type: Application
    Filed: October 20, 2023
    Publication date: February 15, 2024
    Inventors: Se Hyuk PARK, Jin Young ROH, Woo Mi BAE, Hae Kwan SEO, Young Ha SOHN, Jin Wook YANG
  • Publication number: 20240054948
    Abstract: A display device includes: a display panel including pixels having light-emitting elements; a timing control unit for variably changing the driving frame frequency of the display panel according to the input frame frequency of digital video data; and a data driving unit for outputting data voltages according to the digital video data, wherein the display panel operates at a first frame frequency for a first frame period and operates at a second frame frequency, which is lower than the first frame frequency, for a second frame period, the second frame period includes a data addressing period in which a data voltage corresponding to each of the pixels is applied to the pixels, and a blank period in which no data voltage is applied to each of the pixels, and the blank period includes a period of initializing a first electrode of a light-emitting element into an initialization voltage.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 15, 2024
    Inventors: Ji Hye KIM, Joon Chul GOH, Yu Chol KIM, Jin Wook YANG, Ja Kyoung JIN
  • Publication number: 20240038143
    Abstract: A display device includes: a display panel which displays an image corresponding to each of a plurality of frames, and a source driver which drives the display panel. The plurality of frames includes a first frame operating at a first operating frequency, and a second frame operating at a frequency higher than the first operating frequency. The first frame includes a write cycle section, a hold cycle section, and a blank section including a standby section. The source driver operates in a normal driving mode during the write cycle section and the hold cycle section, and operates in a low-power driving mode during the standby section.
    Type: Application
    Filed: April 7, 2023
    Publication date: February 1, 2024
    Inventors: JIN-WOOK YANG, SEHYUK PARK, DONGGYU LEE, JAE-HYEON JEON
  • Patent number: 11875723
    Abstract: A display device, which is a slidable display device, includes a display panel and a data driver. The display panel includes a first display area, a second display area that is in one of a taken-in position and a taken-out-of position of the display device, and a pad area located on one side of the first display area. The display panel includes pixels disposed in the first and second display areas, and is driven in a first mode in which an image is displayed in the first display area or a second mode in which an image is displayed in the first and second display areas. The data driver generates data voltages based on pixel data, outputs the data voltages to the pixels, and controls an order of the data voltages output in the second mode.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sehyuk Park, Hae-Kwan Seo, Youngha Sohn, Jin-Wook Yang
  • Publication number: 20240013724
    Abstract: An electronic device includes a display panel which includes a plurality of pixels and displays an image at each of multiple frames, a driving circuit which drives the multiple frames at multiple operating frequencies, a voltage generator which provides a voltage to the display panel, and a drive controller. The drive controller includes a representative frequency calculator which calculates a representative frequency, based on operating frequencies of ā€˜nā€™ number of frames before one frame of the multiple frames, and a compensating signal calculator which outputs a compensating signal, based on the representative frequency and a count number in the one frame. The drive controller transmits the compensating signal to the voltage generator, the voltage includes a reference voltage, the voltage generator generates the reference voltage based on the compensating signal, and the voltage generator provides the reference voltage to each of the plurality of pixels.
    Type: Application
    Filed: May 12, 2023
    Publication date: January 11, 2024
    Inventors: DONGGYU LEE, HONGSOO KIM, SEHYUK PARK, YOUNGHA SOHN, JIN-WOOK YANG, JAE-HYEON JEON
  • Publication number: 20240013709
    Abstract: A display device includes a display panel which includes first to nth pixel areas arranged in a direction, where n is a natural number greater than or equal to 2, an emission control driver which provides an emission control signal having a plurality of emission cycles corresponding to a number of outputs of a gate-on voltage during a frame period to the first to nth pixel areas, a power supply which generates first to nth bias voltages respectively provided to the first to nth pixel areas, and a timing controller which controls timings when the first to nth bias voltages are supplied to the first to nth pixel areas in a way such that a kth bias voltage is provided with a delay of one emission cycle from a (k?1)th bias voltage, where k is a natural number greater than or equal 2 and less than or equal n.
    Type: Application
    Filed: February 7, 2023
    Publication date: January 11, 2024
    Inventors: DONGGYU LEE, SEHYUK PARK, YOUNGHA SOHN, JIN-WOOK YANG, JAE-HYEON JEON
  • Publication number: 20240013728
    Abstract: A display device includes a display panel including pixels, and a display panel driver which starts a scan operation in synchronization with an input timing of input image data, performs the scan operation every a scan cycle in one frame, and delays a start of the scan operation of an (N+1)-th frame until the scan operation of an N-th frame ends when the input image data of the (N+1)-th frame is input during the scan operation of the N-th frame, where N is a positive integer.
    Type: Application
    Filed: February 6, 2023
    Publication date: January 11, 2024
    Inventors: DONGGYU LEE, JIN-WOOK YANG, JAE-HYEON JEON
  • Publication number: 20240005851
    Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines; a scan driving circuit, which drives the plurality of scan lines in synchronization with a clock signal; and a driving controller, which outputs the clock signal. While an operating mode is a multi-frequency mode, the driving controller comparts the display panel into a first display area and a second display area. A hold frame of the multi-frequency mode includes a first section during which the first display area is driven, and a second section during which the second display area is driven. The driving controller outputs the clock signal of a normal power mode during the first section and outputs the clock signal of a low-power mode during the second section.
    Type: Application
    Filed: September 15, 2023
    Publication date: January 4, 2024
    Inventors: SOON-DONG KIM, SANGAN KWON, TAEHOON KIM, JIN-WOOK YANG
  • Publication number: 20240005868
    Abstract: Disclosed is a display device including a display panel including a plurality of pixels and a voltage generator providing an anode initialization voltage to the pixels. The display panel is divided into a first display area operating at a first operating frequency and a second display area operating at a second operating frequency. While pixels, which correspond to the first display area, from among the plurality of pixels are driven, the anode initialization voltage has a first voltage level. While pixels in the second display area from among the plurality of pixels are driven, the anode initialization voltage has a second voltage level different from the first voltage level.
    Type: Application
    Filed: September 15, 2023
    Publication date: January 4, 2024
    Inventors: SOON-DONG KIM, TAEHOON KIM, JIN-WOOK YANG, EUN SIL YUN, CHANGNOH YOON
  • Publication number: 20240005846
    Abstract: A display panel of a display device is divided into a first display region and a second display region. The second display region includes a boundary region adjacent to the first display region and a non-boundary region opposite to the first display region with respect to the boundary region. The driving controller outputs the voltage control signal, such that the first voltage in a first high voltage level and the second voltage in a first low voltage level are generated when the first display region is driven. The driving controller outputs the voltage control signal, such that the first voltage in a second high voltage level lower than the first high voltage level and the second voltage in a second low voltage level higher than the first low voltage level are generated, when the non-boundary region of the second display region is driven.
    Type: Application
    Filed: February 12, 2023
    Publication date: January 4, 2024
    Inventors: TAEHOON KIM, SEON YOUNG CHOI, SANGAN KWON, SOON-DONG KIM, JIN-WOOK YANG, CHANGNOH YOON
  • Publication number: 20240005847
    Abstract: A display device includes: a pixel electrically connected to a data line, a write scan line, an initialization scan line, a compensation scan line, a transmission control line, and an emission control line; a first driving circuit configured to provide a write scan signal to the write scan line and a second driving circuit configured to receive a plurality of clock signals, each of which has a time duration of one unit horizontal period and provide an initialization scan signal, a compensation scan signal, a transmission control signal, and an emission control signal to the initialization scan line, the compensation scan line, the transmission control line, and the emission control line, respectively. Each of the initialization scan signal and the compensation scan signal has an activation interval of one unit horizontal periods or more.
    Type: Application
    Filed: March 28, 2023
    Publication date: January 4, 2024
    Inventors: JIN-WOOK YANG, YU-CHOL KIM, SEHYUK PARK, DONGGYU LEE, JAE-HYEON JEON