Patents by Inventor Hae-Kwan Seo

Hae-Kwan Seo 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: 20230326405
    Abstract: A display panel includes a plurality of first pixel parts disposed in a first row, a plurality of second pixel parts disposed in a second row and including a first pixel part that includes a first pixel circuit and a first light emitting element which are electrically separated from each other, and a second pixel part that includes a second pixel circuit and a second light emitting element which are electrically separated from each other. The first light emitting element of the first pixel part is electrically connected to the second pixel circuit of the second pixel part.
    Type: Application
    Filed: February 6, 2023
    Publication date: October 12, 2023
    Inventors: HAE-KWAN SEO, JINYOUNG ROH, YOUNGHA SOHN
  • Patent number: 11783758
    Abstract: A display device includes a timing controller configured to generate clock signals, a start signal, and image data. A scan driver includes a plurality of stages configured to sequentially output the clock signals as scan signals in response to the start signal. A data driver configured to generate a data signal based on the image data. A display unit includes pixels configured to emit light with luminance corresponding to the data signal in response to the scan signal. The timing controller is to mask at least one of the clock signals in a first section, a second section, and a third section included in one frame section and spaced from each other.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: October 10, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Noh Yoon, Hae Kwan Seo, Won Tae Kim
  • Publication number: 20230309345
    Abstract: A display device includes: a base substrate; a first pixel including: a first transistor disposed on the base substrate, a first conductive pattern disposed on the first transistor, a first light emitting element disposed on the first conductive pattern, and a first connection line connecting the first conductive pattern and the first light emitting element, and a second pixel adjacent to the first pixel in a first direction and including: a second transistor disposed on the base substrate, a second conductive pattern disposed on the second transistor, a second light emitting element disposed on the second conductive patten, and a second connection line connecting the second conductive pattern and the second light emitting element.
    Type: Application
    Filed: March 22, 2023
    Publication date: September 28, 2023
    Inventors: Hae-Kwan Seo, Jinyoung Roh, Youngha Sohn
  • Publication number: 20230298532
    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: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: HAE-KWAN SEO, SEONGHEON CHO, SOON-DONG KIM, TAEHOON KIM
  • Publication number: 20230290313
    Abstract: A display device includes a display panel including a first pixel column in which first and third color pixels are alternately disposed, a second pixel column in which second color pixels are disposed, a third pixel column in which the third and first color pixels are alternately disposed, and a fourth pixel column in which the second color pixels are disposed. The display device further includes a scan driver applying a scan signal to scan lines, a data driver including a first source channel supplying a first color data signal and a second color data signal to a first data line, and a second source channel supplying the second color data signal and a third color data signal to a second data line, and a demultiplexer successively selecting the first and second sub-data lines during a period in which the scan signal is supplied to each scan line.
    Type: Application
    Filed: December 22, 2022
    Publication date: September 14, 2023
    Inventors: Hae Kwan Seo, Jin Young Roh, Young Ha Sohn, Jin Wook Yang
  • Patent number: 11749152
    Abstract: A display device includes a display panel, a data driving circuit, a scan driving circuit, and a driving controller. The driving controller receives an image signal and a control signal and controls the data and scan driving circuits to display an image on the display panel. The driving controller divides the display panel into first and second display regions based on the image signal, and outputs start and masking signals indicating starts of one frame and the second display region, respectively. First and second frames have first and second durations, respectively. The scan driving circuit sequentially drives scan lines in synchronization with the start signal and stop the driving of scan lines, corresponding to the second display region, of the scan lines, in response to the masking signal.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: September 5, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Taehoon Kim
  • Publication number: 20230267864
    Abstract: A display apparatus includes: a first display area, a second display area, a first back gate signal applying line connected to back gate electrodes of pixels in the first display area and a second back gate signal applying line connected to back gate electrodes of pixels in the second display area; a back gate signal generator configured to generate a first back gate signal applied to the back gate electrodes of the pixels in the first display area and a second back gate signal applied to the back gate electrodes of the pixels in the second display area; a gate driver configured to output a gate signal; a data driver configured to output a data voltage; and a driving controller configured to control a driving timing, wherein the driving controller, the data driver and the back gate signal generator form an integrated driver.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Inventor: Hae-Kwan SEO
  • Publication number: 20230260464
    Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Inventors: Seong Heon CHO, Hae-Kwan SEO
  • Patent number: 11727848
    Abstract: A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: August 15, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Kwan Seo, Dong-Wook Choi, Se Ja Chul Hwang
  • Patent number: 11715406
    Abstract: A display device includes: a data driver for supplying a data signal to output lines; a demultiplexer connected to each of the output lines, the demultiplexer to supply the data signal supplied to each output line to a first data line and a second data line; first pixels disposed in a (2j?1)-th column and a (2k?1)-th row, the first pixels being connected to the first data line, wherein j and k are positive integers; second pixels disposed in the (2j?1)-th column and a (2k)-th row, the second pixels being connected to the second data line; third pixels disposed in a (2j)-th column and the (2k?1)-th row, the third pixels being connected to the first data line; and fourth pixels disposed in the (2j)-th column and the (2k)-th row, the fourth pixels being connected to the second data line.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: August 1, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Hyuk Park, Jin Young Roh, Woo Mi Bae, Hae Kwan Seo, Young Ha Sohn, Jin Wook Yang
  • Patent number: 11705074
    Abstract: A display device includes a display panel that includes a first display area and a second display area, a data driving circuit which drives a plurality of data lines, a scan driving circuit which drives a plurality of scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit such that the first display area is driven at a first driving frequency, and the second display area is driven at a second driving frequency lower than the first driving frequency during a multi-frequency mode, where the driving controller receives an image signal and provides to the data driving circuit an image data signal obtained by compensating for a gamma level of the image signal corresponding to the second display area during the multi-frequency mode.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: July 18, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woomi Bae, Hae-Kwan Seo, Youngha Sohn, Hyojin Lee, Jaekeun Lim
  • Patent number: 11699400
    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: July 14, 2022
    Date of Patent: July 11, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Seongheon Cho, Soon-Dong Kim, Taehoon Kim
  • Publication number: 20230206856
    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: March 6, 2023
    Publication date: June 29, 2023
    Inventors: TAEHOON KIM, JOON-CHUL GOH, SOON-DONG KIM, HAE-KWAN SEO
  • Publication number: 20230154377
    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: Application
    Filed: July 22, 2022
    Publication date: May 18, 2023
    Inventors: SEHYUK PARK, HAE-KWAN SEO, YOUNGHA SOHN, JIN-WOOK YANG
  • Patent number: 11651728
    Abstract: A pixel includes a light emitting element, a first transistor including a gate electrode electrically connected to a first node, a second transistor including a gate electrode connected to a first scan line, a third transistor including a gate electrode connected to the first scan line, a fourth transistor including a gate electrode connected to a second scan line, a fifth transistor including a gate electrode electrically connected to a third scan line, an sixth transistor including a gate electrode electrically connected to the third scan line, a resistor electrically connected in parallel with the sixth transistor between the second node and the anode of the light emitting element, and an amplifier having a non-inverting terminal and an inverting terminal electrically connected to ends of the resistor, respectively.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: May 16, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Ha Sohn, Se Hyuk Park, Hae Kwan Seo, Jin Wook Yang
  • Patent number: 11640777
    Abstract: A display apparatus includes: a first display area, a second display area, a first back gate signal applying line connected to back gate electrodes of pixels in the first display area and a second back gate signal applying line connected to back gate electrodes of pixels in the second display area; a back gate signal generator configured to generate a first back gate signal applied to the back gate electrodes of the pixels in the first display area and a second back gate signal applied to the back gate electrodes of the pixels in the second display area; a gate driver configured to output a gate signal; a data driver configured to output a data voltage; and a driving controller configured to control a driving timing, wherein the driving controller, the data driver and the back gate signal generator form an integrated driver.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: May 2, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hae-Kwan Seo
  • Publication number: 20230127526
    Abstract: A display apparatus includes a display panel and a display driver. The display panel has a first pixel structure. The display driver is configured to receive input image data including first data, and generate a driving signal for driving the display panel based on conversion data. The display driver includes a converter configured to convert the first data into the conversion data. The conversion data include conversion data in N rows and M columns. Each of (2K?1)-th column conversion data include first color conversion data representing a first color and second color conversion data representing a second color. Each of 2K-th column conversion data include third color conversion data representing a third color and fourth color conversion data representing the second color. N, M and K are positive integers.
    Type: Application
    Filed: September 7, 2022
    Publication date: April 27, 2023
    Inventors: SEHYUK PARK, JINYOUNG ROH, WOOMI BAE, HAE-KWAN SEO, YOUNGHA SOHN
  • Patent number: 11636810
    Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: April 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Heon Cho, Hae-Kwan Seo
  • Patent number: 11626054
    Abstract: A display system and a driving method for a display system that includes an application processor configured to supply a mode control signal corresponding to a plurality of driving modes and input image data corresponding thereto; and a display module that includes pixels configured to display an image and configured to control any one of a plurality of gamma values and power source voltages supplied to the pixels in response to the plurality of driving modes.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: April 11, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Hyuk Park, Hong Soo Kim, Jin Young Roh, Hae Kwan Seo, Jin Wook Yang, Hyo Jin Lee, Jae Keun Lim
  • Publication number: 20230089661
    Abstract: A pixel includes a light emitting element, a first transistor including a gate electrode electrically connected to a first node, a second transistor including a gate electrode connected to a first scan line, a third transistor including a gate electrode connected to the first scan line, a fourth transistor including a gate electrode connected to a second scan line, a fifth transistor including a gate electrode electrically connected to a third scan line, an sixth transistor including a gate electrode electrically connected to the third scan line, a resistor electrically connected in parallel with the sixth transistor between the second node and the anode of the light emitting element, and an amplifier having a non-inverting terminal and an inverting terminal electrically connected to ends of the resistor, respectively.
    Type: Application
    Filed: April 20, 2022
    Publication date: March 23, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Young Ha SOHN, Se Hyuk PARK, Hae Kwan SEO, Jin Wook YANG