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: 11164518
    Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: November 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Su Na, Min Woo Byun, Seung Kyu Lee
  • Patent number: 11156879
    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: July 28, 2020
    Date of Patent: October 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Pyo Hong, Wan Namgung, Woo Sung Sohn, Ki Won Park, Seung Kyu Lee, In Woo Kim
  • Patent number: 11151926
    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: Grant
    Filed: May 11, 2020
    Date of Patent: October 19, 2021
    Assignee: 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: 11150765
    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: Grant
    Filed: February 26, 2020
    Date of Patent: October 19, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yoon Gyu Lee, Jae Cheon Park, Seung Kyu Lee, Sun Joon Hwang
  • Publication number: 20210319752
    Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 14, 2021
    Inventors: Ji Su NA, Min Woo BYUN, Seung Kyu LEE
  • Publication number: 20210312845
    Abstract: A display panel includes: a display including pixel columns electrically connected to data lines; a non-display area adjacent the display; a test circuit configured to receive a lighting test signal passing through at least a portion of the non-display area and to transfer the lighting test signal to the data lines in response to a test control signal; and a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 7, 2021
    Inventors: Won-Kyu Kwak, Hwan-Soo Jang, Seung-Kyu Lee
  • Publication number: 20210287628
    Abstract: The present disclosure relates to a display device including first pixels disposed in a first pixel area, and connected to first scan lines; second pixels disposed in a second pixel area, and connected to second scan lines; a timing controller configured to supply a first clock signal and a second clock signal to a first clock line and a second clock line, respectively; a first scan driver configured to receive the first clock signal through the first clock line, and to supply a first scan signal to the first scan lines; and a second scan driver configured to receive the second clock signal through the second clock line, and to supply a second scan signal to the second scan lines, wherein the second pixel area has a smaller width than the first pixel area.
    Type: Application
    Filed: May 31, 2021
    Publication date: September 16, 2021
    Inventors: Jin Tae JEONG, Tae Hoon KWON, Min Ku LEE, Ji Hyun KA, Seung Kyu LEE, Seung Ji CHA
  • Publication number: 20210272501
    Abstract: A display device includes a gray scale converter to receive input gray scale values, calculate an output load value that is smaller than an input load value when the input load value calculated from the input gray scale values is larger than a start current limit value, and convert the input gray scale values into converted gray scale values to correspond to the output load value, and a data driver to provide data voltages based on the converted gray scale values, wherein, when the input load value is between the start current limit value and a first current limit value, there is a first increase rate of the output load value for the input load value, and wherein, when the input load value is between the first current limit value and a maximum value of the input load value, there is a second increase rate of the output load value.
    Type: Application
    Filed: September 28, 2020
    Publication date: September 2, 2021
    Inventors: Si Beak PYO, Seung Kyu LEE
  • Publication number: 20210272490
    Abstract: A display device includes a substrate having a display area and a non-display area. A plurality of pixels is disposed in the display area of the substrate. A plurality of data lines is connected to the plurality of pixels. A crack sensing line is connected to at least one of the plurality of data lines. The crack sensing line is disposed in the non-display area of the substrate. A dummy pattern layer is connected to the crack sensing line.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Inventors: SEUNG-KYU LEE, SEUNG JI CHA, TAE HOON KWON
  • Patent number: 11100856
    Abstract: A stage including: an output circuit to supply a voltage of a first power source or a second power source to an output terminal based on voltages of a first node and a second node; and a stabilizer circuit connected to the first power source and the first node to maintain the voltage of the second node when the voltage of the first power source is to be output to the output terminal, the output circuit and the stabilizer circuit being commonly connected to a first electrode and a second electrode of a capacitor.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Seung Ji Cha, Ji Hyun Ka, Tae Hoon Kwon, Min Ku Lee, Jin Tae Jeong
  • Publication number: 20210248956
    Abstract: A display device includes: a plurality of pixels to receive data voltages based on converted grayscales; and a grayscale converter to: calculate first compensation offsets based on positions of the pixels and input grayscales for the pixels; convert the first compensation offsets into second compensation offsets according to a maximum luminance weight based on an input maximum luminance; and calculate the converted grayscales by applying the second compensation offsets to the input grayscales.
    Type: Application
    Filed: January 25, 2021
    Publication date: August 12, 2021
    Inventors: Si Beak PYO, Seung Kyu LEE, Young Uk HWANG
  • Patent number: 11087654
    Abstract: A display panel includes: a display including pixel columns electrically connected to data lines; a non-display area adjacent the display; a test circuit configured to receive a lighting test signal passing through at least a portion of the non-display area and to transfer the lighting test signal to the data lines in response to a test control signal; and a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: August 10, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Kyu Kwak, Hwan-Soo Jang, Seung-Kyu Lee
  • Patent number: 11087689
    Abstract: A display includes a plurality of pixels in a non-quadrangular display area and a plurality of first driving circuits and a plurality of second driving circuits in a peripheral area of the display area. Each of the pixels is connected to a first signal line in a first direction and a second signal line in a second direction crossing the first direction. Each of the first driving circuits outputs a first signal to the first signal line of a corresponding one of the pixels. Each of the second driving circuits outputs a second signal to the second signal line of a corresponding one of the pixels. The number of second driving circuits between neighboring first driving circuits is different depending on a position in the peripheral area.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: August 10, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Kyu Lee, Kwang-Min Kim, Byoung Sun Kim
  • Publication number: 20210242301
    Abstract: A display device includes a substrate having a pixel area with at least a first rounded corner portion and first to third non-pixel areas arranged sequentially along an outer circumference of the pixel area. An internal circuit in the first non-pixel area has a first end portion adjacent to the first rounded corner portion of the pixel area. The first end portion of the internal circuit is rounded in accordance with the first rounded corner portion. A plurality of routing wires are in the third non-pixel area below the pixel area. The routing wires extending to the pixel area via the second non-pixel area and the first non-pixel area. The routing wires include at least a first routing wire connected to the pixel area passing an area of the first end portion of the internal circuit.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung Kyu LEE, Yang Wan KIM, Sun Ja KWON, Byung Sun KIM, Hyun Ae PARK, Su Jin LEE, Jae Yong LEE, Tae Hoon KWON, Seung Ji CHA
  • Patent number: 11075225
    Abstract: A display device including: a substrate including a display area for displaying an image and a non-display area positioned at a periphery of the display area; a plurality of pixels positioned at the display area; a plurality of data lines connected with the plurality of pixels; and a crack detecting line positioned at the non-display area, wherein the crack detecting line includes: a plurality of unit connectors extending in a first direction, wherein the first direction is parallel to an extending direction of a side of the substrate nearest to the unit connectors; and a plurality of wiring portion units connected to each other through the plurality of unit connectors, wherein the number of wiring portion units is an even number.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: July 27, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hey Jin Shin, Won Kyu Kwak, Seung-Kyu Lee
  • Patent number: 11062967
    Abstract: A display device includes a display area, a peripheral area, a pad portion, a bending area, a first crack detection circuit, and a first crack detection line. The display area includes pixels and data lines. The peripheral area is disposed outside the display area. The pad portion is disposed in the peripheral area. The bending area is disposed in the peripheral area. The bending area is bendable or in a bent state. The first crack detection circuit is disposed between the display area and the pad portion. The first crack detection circuit includes switches. The first crack detection line includes a first curved portion disposed in the bending area. The first crack detection line is connected between the pad portion and the first crack detection circuit.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: July 13, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Woong Kim, Won Kyu Kwak, Seung-Kyu Lee
  • Publication number: 20210201802
    Abstract: A display device and a method of driving the same. The display device may include: a first pixel area including first pixels and first data lines coupled to the first pixels; a second pixel area including second pixels and second data lines coupled to the second pixels; a first non-pixel area disposed on one side of the first pixel area such that the first non-pixel area borders the first and second pixel areas; a data driver configured to output data signals corresponding to the first and second pixels through first and second output lines, respectively; and a switch unit including a first switch unit having a demux configured to alternately couple each of the first output lines to corresponding first data lines, and a second switch unit configured to couple the second output lines to the respective different second data lines.
    Type: Application
    Filed: February 22, 2021
    Publication date: July 1, 2021
    Inventors: Jung Hun YI, Seung Kyu Lee, Ki Wook Kim, Yang Wan Kim
  • Patent number: 11043169
    Abstract: An organic light emitting display device includes: a first pixel region including first pixels coupled to first and second scan lines, and emission control lines; a first scan driver which supplies a first scan signal to each first scan line; a second scan driver which supplies a second scan signal to each second scan line; and an emission driver which supplies a light emission control signal to the emission control lines. The organic light emitting display device is in a second mode when the organic light emitting display device is mounted in a wearable device, and in a first mode otherwise. The second scan driver supplies k second scan signals to each second scan line in the first mode, and supplies j second scan signals to each second scan line in the second mode, where j is greater than k.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: June 22, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chae Han Hyun, Seung Kyu Lee, Jung Hun Yi, Seon I Jeong
  • Patent number: 11024258
    Abstract: The present disclosure relates to a display device including first pixels disposed in a first pixel area, and connected to first scan lines; second pixels disposed in a second pixel area, and connected to second scan lines; a timing controller configured to supply a first clock signal and a second clock signal to a first clock line and a second clock line, respectively; a first scan driver configured to receive the first clock signal through the first clock line, and to supply a first scan signal to the first scan lines; and a second scan driver configured to receive the second clock signal through the second clock line, and to supply a second scan signal to the second scan lines, wherein the second pixel area has a smaller width than the first pixel area.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: June 1, 2021
    Inventors: Jin Tae Jeong, Tae Hoon Kwon, Min Ku Lee, Ji Hyun Ka, Seung Kyu Lee, Seung Ji Cha
  • Patent number: 11017699
    Abstract: A display panel may include a plurality of pixel groups, a first lighting test circuit for testing at least one pixel of the plurality of pixel groups, a demultiplexer for providing data signals to the plurality of pixel groups, and a second lighting test circuit for testing one or more pixels of the plurality of pixel groups. At least one of the first lighting test circuit and the demultiplexer is positioned between the plurality of pixel groups and the second lighting test circuit.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 25, 2021
    Inventors: Hyunwoong Kim, Seung-Kyu Lee