Patents by Inventor Soon-Dong Kim

Soon-Dong Kim 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: 12288523
    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: Grant
    Filed: September 15, 2023
    Date of Patent: April 29, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Dong Kim, Taehoon Kim, Jin-Wook Yang, Eun Sil Yun, Changnoh Yoon
  • Patent number: 12277911
    Abstract: A scan driving circuit includes: a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal; and a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit.
    Type: Grant
    Filed: February 23, 2024
    Date of Patent: April 15, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taehoon Kim, Joon-Chul Goh, Soon-Dong Kim, Hae-Kwan Seo
  • Patent number: 12249275
    Abstract: A display device which includes a display panel that includes a first display area and a second display area, and a driving controller. During a multi-frequency mode, the driving controller drives the first display area by using a first driving frequency and drives the second display area by using a second driving frequency. During the multi-frequency mode, when the second driving frequency changes from a first frequency to a second frequency, the driving controller drives the first display area and the second display area during at least one frame by using a base frequency, drives the first display area and the second display area during at least one second frame by using an intermediate frequency between the base frequency and the second frequency, and then drives the first display area by using the first driving frequency and drives the second display area by using the second frequency.
    Type: Grant
    Filed: March 22, 2024
    Date of Patent: March 11, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jihye Kim, Sangan Kwon, Soon-Dong Kim, Taehoon Kim, Seok Hwan Roh, Changnoh Yoon
  • Publication number: 20250054440
    Abstract: An electronic device includes a display panel that operates in a normal mode, a multi-frequency mode, or a refresh mode, a driving controller, and a host generating and outputting a luminance information. In the multi-frequency mode, a display area defined in the display panel is divided into a first display area and a second display area, and the driving controller controls the first display area and the second display area so as to operate at different frequencies. In the normal mode, the driving controller controls the display area so as to operate at a normal frequency. In the refresh mode, the driving controller controls the display area so as to operate at the normal frequency during one frame. When the luminance information changes, the display panel operates in the refresh mode.
    Type: Application
    Filed: May 16, 2024
    Publication date: February 13, 2025
    Inventors: CHANGNOH YOON, SANGAN KWON, SOON-DONG KIM, JIHYE KIM, TAEHOON KIM, MIN-KYU PARK
  • Publication number: 20250046255
    Abstract: A display device includes a display panel including pixels connected to scan lines, a scan driving circuit including scan stages corresponding to the scan lines, respectively, where each of the scan stages receives a masking signal and a carry signal and outputs a scan signal, and a driving controller which divides the display panel into the first display area and the second display area, controls the scan driving circuit such that the first display area and the second display area operate with different frequencies, and outputs start signals provided at different timings. A first scan stage disposed in the first display area from among the scan stages receives a first start signal of the start signals as the carry signal, and a first scan stage disposed in the second display area from among the scan stages receives a second start signal of the start signals as the carry signal.
    Type: Application
    Filed: March 18, 2024
    Publication date: February 6, 2025
    Inventors: Sangan KWON, Soon-Dong KIM, Jihye KIM, Taehoon KIM, Changnoh YOON
  • Patent number: 12217665
    Abstract: A display device includes: a display panel including pixels, a data driving circuit, a scan driving circuit which drives a plurality of first scan lines and a plurality of second scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit to drive a first display area of the display panel at a first operating frequency and drive a second display area of the display panel at a second operating frequency lower than the first operating frequency while an operating mode is a multi-frequency mode. During the multi-frequency mode, first scan signals provided to first scan lines, which correspond to the second display area, of the plurality of first scan lines are maintained at inactive levels in predetermined frames, and second scan signals provided to the plurality of second scan lines transition to active levels at least twice in each of the predetermined frames.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: February 4, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangan Kwon, Soon-Dong Kim, Taehoon Kim, Eun Sil Yun, Changnoh Yoon
  • Patent number: 12217660
    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: Grant
    Filed: September 15, 2023
    Date of Patent: February 4, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Dong Kim, Sangan Kwon, Taehoon Kim, Jin-Wook Yang
  • Patent number: 12211424
    Abstract: A display panel driving circuit includes a scan driving circuit including a scan stage and a timing controller. The scan stage includes a first circuit connected to a first input node of receiving a first clock signal, a second circuit connected to a second input node of receiving a second clock signal, a third circuit connected to a third input node of receiving a carry signal, the first circuit, and the second circuit and connected to a first control node and a second control node, a pull-up transistor electrically connected to the first input node and an output node of outputting a scan signal and turned on/off by the first control node, and a pull-down transistor electrically connected to the output node and a low-level voltage line and turned on/off by the second control node.
    Type: Grant
    Filed: January 22, 2024
    Date of Patent: January 28, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taehoon Kim, Sangan Kwon, Soon-Dong Kim, Geunjeong Park, Changnoh Yoon, Jaekeun Lim
  • Publication number: 20250029545
    Abstract: A display device which includes a display panel that includes a first display area and a second display area, and a driving controller. During a multi-frequency mode, the driving controller drives the first display area by using a first driving frequency and drives the second display area by using a second driving frequency. During the multi-frequency mode, when the second driving frequency changes from a first frequency to a second frequency, the driving controller drives the first display area and the second display area during at least one frame by using a base frequency, drives the first display area and the second display area during at least one second frame by using an intermediate frequency between the base frequency and the second frequency, and then drives the first display area by using the first driving frequency and drives the second display area by using the second frequency.
    Type: Application
    Filed: March 22, 2024
    Publication date: January 23, 2025
    Inventors: JIHYE KIM, SANGAN KWON, SOON-DONG KIM, TAEHOON KIM, SEOK HWAN ROH, CHANGNOH YOON
  • Publication number: 20250022420
    Abstract: A display device includes a display panel including first pixels arranged in a first row and second pixels arranged in a second row. A viewing angle of the first pixels is different from a viewing angle of the second pixels. The first pixels and the second pixels are disposed in a privacy region of the display panel and a public region of the display panel which is different from the privacy region. The display device further includes a panel driver configured to receive privacy region position information indicating a position of the privacy region, and drive the display panel such that the first pixels emit light in the privacy region of the display panel and the second pixels emit light in the public region of the display panel.
    Type: Application
    Filed: July 12, 2024
    Publication date: January 16, 2025
    Inventors: BYUNG KI CHUN, WOO-CHUL KIM, BOODONG KWAK, SOON-DONG KIM, YU-CHOL KIM, KWANGSUK SHIN, BYUNGKIL JEON
  • Patent number: 12183240
    Abstract: A display panel includes a first pixel group including sub-pixels coupled to a first scan line and located in first through N-th sub-pixel columns, where N is an even number greater than or equal to 2, a second pixel group including sub-pixels coupled to the first scan line and located in (N+1)-th through 2N-th sub-pixel columns, a third pixel group including sub-pixels coupled to a second scan line adjacent to the first scan line and located in the first through N-th sub-pixel columns, and a fourth pixel group including sub-pixels coupled to the second scan line and located in the (N+1)-th through 2N-th sub-pixel columns. The first pixel group and the second pixel group are driven during a first scan on time in which the first scan line is driven.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: December 31, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Wook Yang, Soon-Dong Kim, Chang-Noh Yoon, Eun-Gyeong Choe
  • Publication number: 20240404451
    Abstract: A driving controller includes a compensation unit that receives an image signal corresponding to a first display area and a second display area, calculates stress data based on the image signal and previous stress data, and outputs an image data signal, which is obtained by compensating for the image signal based on the stress data, a memory that stores the stress data of a previous frame from the compensation unit and provides the previous stress data, and a multi-frequency compensation unit that receives a data enable signal, counts a number of consecutive masking enable frames when the data enable signal indicates a multi-frequency mode, calculates accumulated second stress data based on the number of the consecutive masking enable frames and second stress data, which corresponds to the second display area, from among the stress data from the memory, and stores the accumulated second stress data in the memory.
    Type: Application
    Filed: February 23, 2024
    Publication date: December 5, 2024
    Inventors: JIHYE KIM, SANGAN KWON, SOON-DONG KIM, TAEHOON KIM, GEUNJEONG PARK, CHANGNOH YOON
  • Patent number: 12154489
    Abstract: A display device includes a display panel, a data driver, a scan driver, and a light emitting driver. The display panel includes a first display area and a second display area. The display panel displays a first image on the first display area and the second display area in a first mode, and displays a second image on the first display area in a second mode. The light emitting driver activates emission control signals applied to the first display area and the second display area in the first mode. The light emitting driver activates emission control signals applied to the second display area during a first partial frame in the second mode, and maintains the emission control signals applied to the second display area in a deactivation state during a plurality of second partial frames in the second mode.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: November 26, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taehoon Kim, Sangan Kwon, Soon-Dong Kim, Hui Nam, Eun Sil Yun, Changnoh Yoon
  • Publication number: 20240371312
    Abstract: A display panel driving circuit includes a scan driving circuit including a scan stage and a timing controller. The scan stage includes a first circuit connected to a first input node of receiving a first clock signal, a second circuit connected to a second input node of receiving a second clock signal, a third circuit connected to a third input node of receiving a carry signal, the first circuit, and the second circuit and connected to a first control node and a second control node, a pull-up transistor electrically connected to the first input node and an output node of outputting a scan signal and turned on/off by the first control node, and a pull-down transistor electrically connected to the output node and a low-level voltage line and turned on/off by the second control node.
    Type: Application
    Filed: January 22, 2024
    Publication date: November 7, 2024
    Inventors: TAEHOON KIM, SANGAN KWON, SOON-DONG KIM, GEUNJEONG PARK, CHANGNOH YOON, JAEKEUN LIM
  • Publication number: 20240331623
    Abstract: A display device includes a display panel including a pixel including a pixel circuit and a light emitting element, a plurality of scan lines connected to the pixel circuit, an emission control line connected to the pixel circuit, and a data line connected to the pixel circuit. The pixel circuit includes a first capacitor connected to a first node and a second node opposite to the first node, a first circuit portion that includes a first transistor connected between the data line and the first node and a second transistor connected between the first transistor and the first node, and a second circuit portion connected to the second node and the light emitting element. Before the light emitting element emits light, a reference voltage is provided to a third node between the first transistor and the second transistor.
    Type: Application
    Filed: June 11, 2024
    Publication date: October 3, 2024
    Inventors: JAEKEUN LIM, BON-SEOG GU, SANGAN KWON, SOON-DONG KIM, JINYOUNG ROH, HAE-KWAN SEO
  • Publication number: 20240290235
    Abstract: A display device includes a display panel including pixels, and a panel driver which drive the display panel. Each frame period for the display panel includes N emission cycles, where N is an integer greater than 1. In a partial driving mode, the panel driver sets a black region of the display panel from a M/N point of the display panel along a direction perpendicular to an emission signal line, where M is an integer greater than 0 and less than N, and drives the display panel to display an image corresponding to input image data in a remaining region of the display panel other than the black region and to display a black image in the black region.
    Type: Application
    Filed: December 12, 2023
    Publication date: August 29, 2024
    Inventors: SANGAN KWON, SOON-DONG KIM, TAEHOON KIM, GEUNJEONG PARK, CHANGNOH YOON
  • Patent number: 12062338
    Abstract: A scan driving circuit of a display device includes a first output terminal electrically connected to a first scan line, a second output terminal electrically connected to a second scan line, a first masking circuit electrically connecting the first output terminal and the second output terminal and outputting, as a first scan signal, a second scan signal to the first output terminal, a driving circuit outputting the second scan signal to the second output terminal in response to clock signals and a carry signal, and a second masking circuit masking the second scan signal to a predetermined level in response to the second masking signal, wherein the first masking circuit electrically disconnects the first output terminal from the second output terminal in response to a first masking signal.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: August 13, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Seongheon Cho, Soon-Dong Kim, Taehoon Kim
  • Patent number: 12046198
    Abstract: A display device includes a plurality of pixels arranged in m rows and n columns, where the pixels receive write scan signals, data voltages and compensation scan signals, a plurality of write scan lines which provides the write scan signals to the pixels, a plurality of data lines which provides the data voltages to the pixels, and a plurality of compensation scan lines which provides the compensation scan signals to the pixels, wherein in h-th to p-th frames, the data voltages are applied to pixels arranged in first to i-th rows, and in h-th to (h+k)-th frames, the data voltages are applied to pixels of a row unit by increasing sequentially the number of the row unit to which the data voltages are applied in at least one row unit from an i-th row to an (i+1)-th row.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: July 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangan Kwon, Hui Nam, Soon-Dong Kim, Changnoh Yoon, Seungjae Lee
  • Patent number: 12033568
    Abstract: A display device includes a display panel including a pixel including a pixel circuit and a light emitting element, a plurality of scan lines connected to the pixel circuit, an emission control line connected to the pixel circuit, and a data line connected to the pixel circuit. The pixel circuit includes a first capacitor connected to a first node and a second node opposite to the first node, a first circuit portion that includes a first transistor connected between the data line and the first node and a second transistor connected between the first transistor and the first node, and a second circuit portion connected to the second node and the light emitting element. Before the light emitting element emits light, a reference voltage is provided to a third node between the first transistor and the second transistor.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: July 9, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jaekeun Lim, Bon-Seog Gu, Sangan Kwon, Soon-Dong Kim, Jinyoung Roh, Hae-Kwan Seo
  • Publication number: 20240194153
    Abstract: A scan driving circuit includes: a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal; and a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit.
    Type: Application
    Filed: February 23, 2024
    Publication date: June 13, 2024
    Inventors: TAEHOON KIM, JOON-CHUL GOH, SOON-DONG KIM, HAE-KWAN SEO