Patents by Inventor Seung Kyu Lee

Seung Kyu Lee 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: 10845714
    Abstract: An exposure method includes exposing a substrate to form a first pattern on a first layer, measuring a first alignment value of the first pattern, generating first correction data by using the first alignment value, storing the first correction data and exposing the substrate to form a second pattern on a second layer disposed on the first layer by using the first correction data.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ik-Han Oh, Seung-Kyu Lee, Hyeon-Min Cho
  • Publication number: 20200365079
    Abstract: A display device may include: a first pixel including first and second sub-pixels coupled to first and second data lines; a data driver which supplies data signals to first and second output lines; and a switch unit which distributes the data signals to the first and the second data lines. The first and the second sub-pixels are line-symmetrical with each other. Each of the first and the second sub-pixels may include: an OLED; a first transistor which controls a driving current flowing from a first power supply to a second power supply via the OLED, in response to a voltage supplied to a node connected thereto; emission control transistors which are turned on when an emission control signal is supplied; and a reference transistor which couples a shielding layer overlapping a corresponding data line to the first power supply when the emission control signal is supplied thereto.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Seung Ji CHA, Seung Kyu LEE, Kyung Hoon KIM, Mi Hae KIM, Jae Du NOH, Jae Sic LEE
  • Publication number: 20200357320
    Abstract: A display device, including: pixels coupled to scan lines and data lines; a data driver configured to supply respective data signals to the data lines, including an amplifier disposed at an output terminal of the data driver, the amplifier including a first power terminal and a second power terminal; a switch unit configured to perform a power switching operation of alternately connecting the first power terminal and the second power terminal of the amplifier to a first driving power source and a second driving power source; and a driving controller configured to control the data driver and the switch unit, wherein the driving controller is configured to output a switch control signal to control the switch unit and interrupt the power switching operation during a blank period between source output periods, during which the data driver is configured to output the data signals of each frame.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 12, 2020
    Inventors: Jae Cheon PARK, Seung Kyu LEE, Yoon GYU LEE, Chae Han HYUN
  • Publication number: 20200355950
    Abstract: A liquid crystal display device including a display area, a non-display area surrounding the display area and including a first non-display area disposed on a first side, in a first direction, of the display area and a second non-display area disposed on a second side, in the first direction, of the display area, a first substrate including a first base and a plurality of spacers that are disposed on a first surface of the first base, a second substrate disposed on the first substrate, and a liquid crystal layer disposed between the first and second substrates. The spacers include first spacers, having a first thickness, disposed in the non-display area and second spacers, having a second thickness greater than the first thickness, disposed in the non-display area. A number of second spacers disposed in a first non-display area is different from a number of second spacers disposed in a second non-display area.
    Type: Application
    Filed: July 28, 2020
    Publication date: November 12, 2020
    Inventors: Ki Pyo HONG, Wan NAMGUNG, Woo Sung SOHN, Ki Won PARK, Seung Kyu LEE, In Woo KIM
  • Publication number: 20200348569
    Abstract: A liquid crystal display according to an exemplary embodiment of the present system and method includes a first insulation substrate, a thin film transistor disposed on the first insulation substrate, a pixel electrode connected to the thin film transistor, a protrusion disposed on the pixel electrode, a second insulation substrate facing the first insulation substrate, a common electrode disposed on the second insulation substrate, and a liquid crystal layer disposed between the pixel electrode and the common electrode, wherein one pixel includes a thin film transistor formation region where the thin film transistor is disposed and a display area where the pixel electrode is disposed, and the protrusion is disposed to overlay at least a portion of edges of the display area.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Youn Hak JEONG, Wan NAMGUNG, Hong Min YOON, Ho Jun LEE, Pil Gyu KANG, Seung Kyu LEE, Yun Seok LEE
  • Publication number: 20200342809
    Abstract: A display device includes: an organic light emitting diode (OLED); a pixel circuit configured to control an amount of a current flowing from a first power voltage to the OLED; and a gate line and a data line that are connected to the pixel circuit, the pixel circuit including: an auxiliary transistor including a gate electrode electrically connected to the data line and a first electrode and a second electrodes connected to the gate line, the first electrode and the second electrode of the auxiliary transistor being electrically connected to each other.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Inventors: Jong Won PARK, Seung-Kyu LEE, Hyun Woong KIM
  • Publication number: 20200335042
    Abstract: A display device a display driver configured to drive pixels in correspondence with input image data, timing signals, and a brightness selection signal. The display driver includes a storage unit configured to store gamma data and a duty value for each of a plurality of sample brightness levels including a K-th sample brightness level, and a brightness controller the display driver being configured to control the brightness of the display area according to the gamma data or the duty value or gamma data obtained by non-linearly interpolating gamma data of a (K?1)-th sample brightness level and the K-th sample brightness level, with respect to a tuning point brightness level. A light emission time of the pixels corresponding to the (K?1)-th sample brightness level is less than or equal to 10% shorter than the light emission time of the pixels corresponding to the K-th sample brightness level.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 22, 2020
    Inventors: Min Seong SON, Hyun Jung SON, Jae Cheon PARK, Seung Kyu LEE, Yoon Gyu LEE, Sun Joon HWANG
  • Publication number: 20200327848
    Abstract: A display device includes a substrate including a first pixel area, a second pixel area, and a third pixel area, each of the second and third pixel areas having a smaller surface area than the first pixel area and being connected to the first pixel area, first to third pixels provided in the first to third pixel areas, respectively, first to third lines connected to the first to third pixels, respectively, a line connecting part connecting the second and third lines, and a dummy unit overlapping the line connecting part to compensate for a difference of a load value of the first line and a load value of the second line.
    Type: Application
    Filed: May 11, 2020
    Publication date: October 15, 2020
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ji Hyun KA, Sun Ja KWON, Tae Hoon KWON, Byung Sun KIM, Yang Wan KIM, Hyun Ae PARK, Su Jin LEE, Seung Kyu LEE, Jae Yong LEE, Jin Tae JEONG, Seung Ji CHA
  • Patent number: 10804350
    Abstract: An organic light-emitting display device including: pixels disposed on each of horizontal lines, each of the pixels includes an organic light-emitting diode, and an auxiliary transistor coupled between an anode electrode of the organic light-emitting diode and an auxiliary power source; and at least one reference transistor disposed on each of the horizontal lines and coupled between a reference power source and at least one of the pixels. The auxiliary transistor and the reference transistor may be simultaneously turned on.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: October 13, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Moo Choi, Seung Kyu Lee
  • Publication number: 20200312944
    Abstract: A display apparatus includes a substrate including a display area, a peripheral area surrounding the display area, a function-adding area, of which at least a portion is surrounded by the display area, and a detour area disposed between the display area and the function-adding area. The display apparatus includes a plurality of pixel circuits disposed in the display area. A plurality of driving lines are electrically connected to the pixel circuits and extend in a direction in the display area. A first detour line is disposed in the detour area and is electrically connected to a first driving line. A second detour line is disposed in the detour area. The second detour line is electrically connected to a second driving line and is disposed in a different layer from the first detour line.
    Type: Application
    Filed: June 16, 2020
    Publication date: October 1, 2020
    Inventors: JI-HYUN KA, SEUNG-KYU LEE, HWAN-SOO JANG, JIN-TAE JEONG
  • Patent number: 10788692
    Abstract: An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: September 29, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kee-Han Uh, Hyung-Guel Kim, Sang-Woo Kim, Seung-Kyu Lee, Bo-Young An, Won-Sang Park, Jae-Hyun Kim, Hae-Young Yun, Jae-Young Lee, Poundaleva Irina, Sung-Eun Cha, Young-Joo Chang, Jae-Ik Lim, Ki-Hun Jeong
  • Publication number: 20200302872
    Abstract: A display device is provided. The display device may include a substrate, a plurality of pixels, a first data line, a second data line, a defect sensing line, a first input pad, and a static electricity discharge element. The substrate may include a display area and a peripheral area neighboring each other. The plurality of pixels may be positioned on the display area and may include a first pixel and a second pixel. The first data line may be electrically connected to the first pixel. The second data line may be electrically connected to the second pixel and may be electrically isolated from the first data line. The defect sensing line may be positioned on the peripheral area. The first input pad may be electrically connected to the defect sensing line. The static electricity discharge element may be electrically connected through the defect sensing line to the first input pad.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Inventors: Kwang-Min KIM, Seung-Kyu LEE, Won Kyu KWAK
  • Publication number: 20200301539
    Abstract: A display device is provided including a much sensor including a touch controller and a display panel overlapped by the touch sensor and configured to display an image. A display panel driver is, electrically connected to the display panel and configured to supply a driving signal to the display panel. The display panel driver is electrically connected to the touch controller and is configured to transmit a noise sensing signal to the touch controller.
    Type: Application
    Filed: February 26, 2020
    Publication date: September 24, 2020
    Inventors: Yoon Gyu Lee, Jae Cheon Park, Seung Kyu Lee, Sun Joon Hwang
  • Publication number: 20200294434
    Abstract: A display device includes a peripheral area around a display area, a plurality of pixels in the display area, and a plurality of signal lines connected to the pixels. The signal lines include a plurality of data lines connected to the pixels, a crack detection line connected to first data lines among the data lines through a first transistor, and a control line connected to a gate of the first transistor. The crack detection line is in the peripheral area.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Inventors: Seung-Kyu LEE, Tae Hoon KWON, Ji-Hyun KA, Won Kyu KWAK, Dong Soo KIM, Han-Sung BAE, Hey Jin SHIN, Seung Ji CHA
  • Publication number: 20200294445
    Abstract: A display device includes a display unit including a plurality of pixels coupled to a plurality of data lines, a plurality of scan lines, and a plurality of emission control lines, a controller for determining a width of a gate-off section of an emission control signal, which corresponds to a non-emission section of each of a plurality of frames belonging to a dimming period, in response to a dimming signal, and an emission driver for supplying the emission control signal in units of a plurality of consecutive pixel rows through the plurality of emission control lines.
    Type: Application
    Filed: January 6, 2020
    Publication date: September 17, 2020
    Inventors: SI BEAK PYO, SEUNG KYU LEE, MIN SEONG SON
  • Patent number: 10777145
    Abstract: A demultiplexer includes: a first transistor connected between a data input line and a first data output line; a second transistor connected between the data input line and a second data output line; and an initializing transistor configured to be simultaneously turned on with the first transistor to transmit an initializing voltage to the second data output line.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 15, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Kyu Lee, Ji Su Na
  • Patent number: 10769987
    Abstract: A display device includes first pixels in a first pixel region and connected to first scan lines and second pixels in a second pixel region connected to second scan lines. The second pixel has a width less than the first pixel region. The display device also includes a first scan driver to supply first scan signals to the first scan lines, a second scan driver to supply second scan signals to the second scan lines, a first signal line to supply a first driving signal to the first scan driver and the second scan driver, and a signal delay circuit connected to the first signal line to delay the first driving signal.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: September 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Tae Hoon Kwon, Min Ku Lee, Ji Hyun Ka, Jin Tae Jeong, Seung Ji Cha
  • Publication number: 20200279518
    Abstract: A display device includes a processor and a display panel for receiving observation grayscale values from the processor. The display panel includes a data driver for applying data voltages to data lines, a target pixel coupled to at least one of the data lines, and observation pixels each coupled to at least one of the data lines, and located adjacent to the target pixel. The display panel applies a first data voltage to the target pixel, when the observation grayscale values for the observation pixels exceed a reference value. The display panel applies a second data voltage to the target pixel, when at least one of the observation grayscale values does not exceed the reference value. The first data voltage and the second data voltage are different from each other.
    Type: Application
    Filed: January 2, 2020
    Publication date: September 3, 2020
    Inventors: SI BEAK PYO, Seung Kyu Lee, Hyun Jung Son, Yoon Gyu Lee
  • Patent number: 10761378
    Abstract: A liquid crystal display device including a display area, a non-display area surrounding the display area and including a first non-display area disposed on a first side, in a first direction, of the display area and a second non-display area disposed on a second side, in the first direction, of the display area, a first substrate including a first base and a plurality of spacers that are disposed on a first surface of the first base, a second substrate disposed on the first substrate, and a liquid crystal layer disposed between the first and second substrates. The spacers include first spacers, having a first thickness, disposed in the non-display area and second spacers, having a second thickness greater than the first thickness, disposed in the non-display area. A number of second spacers disposed in a first non-display area is different from a number of second spacers disposed in a second non-display area.
    Type: Grant
    Filed: May 13, 2018
    Date of Patent: September 1, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Pyo Hong, Wan Namgung, Woo Sung Sohn, Ki Won Park, Seung Kyu Lee, In Woo Kim
  • Publication number: 20200265769
    Abstract: A source driver includes a gamma voltage generation circuit. The gamma voltage generation circuit generates a gamma voltage and varies a gamma voltage based on a drive frequency. A data voltage generation circuit generates a data voltage based on the gamma voltage.
    Type: Application
    Filed: January 13, 2020
    Publication date: August 20, 2020
    Inventors: SI BEAK PYO, Seung Kyu Lee