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: 10559644
    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: Grant
    Filed: March 15, 2017
    Date of Patent: February 11, 2020
    Assignee: 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
  • Publication number: 20200043406
    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: May 15, 2019
    Publication date: February 6, 2020
    Inventors: Seung Ji CHA, Seung Kyu LEE, Kyung Hoon KIM, Mi Hae KIM, Jae Du NOH, Jae Sic LEE
  • Patent number: 10546534
    Abstract: A non-rectangular display includes: a plurality of first signal lines extending along a first direction; a plurality of DC voltage lines extending along the first direction; and a plurality of second signal lines extending along the first direction, wherein a first DC voltage line of the plurality of DC voltage lines is between a first line of the plurality of first signal lines and a second line of the plurality of second signal lines, a second DC voltage line of the plurality of DC voltage lines is between a third line of the plurality of first signal lines and a fourth line of the plurality of second signal lines, and the first and third lines are adjacent to each other, or the second and fourth lines are adjacent to each other.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: January 28, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Kyu Lee, Tae Hoon Kim, Jae Du Noh
  • Publication number: 20200027939
    Abstract: Provided is pixel including a first transistor including a first drain region electrically connected to a light emitting diode, a first gate electrode, a first channel region overlapping the first gate electrode, and a first source region, a first sub-transistor including a first sub-gate electrode, a first sub-channel region overlapping the first sub-gate electrode, a first sub-drain region connected to the first gate electrode, and a first sub-source region, a second sub-transistor including a second sub-gate electrode, a second sub-channel region overlapping the second sub-gate electrode, a second sub-drain region connected to the first sub-source region, and a second sub-source region, and a shielding pattern overlapping the first sub-source region and the second sub-drain region and not overlapping the first sub-channel region, wherein a width of the first sub-channel region is greater than a width of the second sub-channel region.
    Type: Application
    Filed: May 8, 2019
    Publication date: January 23, 2020
    Inventors: Youngjin CHO, Hyunwoong KIM, Joong-soo MOON, Seung-kyu LEE, Yangwan KIM
  • Patent number: 10540929
    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: November 6, 2017
    Date of Patent: January 21, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chae Han Hyun, Seung Kyu Lee, Jung Hun Yi, Seon I Jeong
  • Patent number: 10522431
    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: June 7, 2017
    Date of Patent: December 31, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Woong Kim, Won Kyu Kwak, Seung-Kyu Lee
  • Publication number: 20190385523
    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 17, 2019
    Publication date: December 19, 2019
    Inventors: Ji Su NA, Min Woo BYUN, Seung Kyu LEE
  • Publication number: 20190371248
    Abstract: A display device includes a substrate, first pixels, second pixels, and third pixels. The substrate has a first pixel area, a second pixel area, and a third pixel area. The first pixels are in the first pixel area and are connected to first scan lines and first emission control lines. The second pixels are in the second pixel area and are connected to second scan lines and second emission control lines. The third pixels are in the third pixel area and are connected to third scan lines and third emission control lines. The second scan lines are spaced apart from the third scan lines, and the second emission control lines are spaced apart from the third emission control lines.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 5, 2019
    Inventors: Yang Wan Kim, Seung Kyu Lee, Sun Ja Kwon, Tae Hoon Kwon, Byung Sun Kim, Hyun Ae Park, Su Jin Lee, Jae Yong Lee, Seung Ji Cha
  • Publication number: 20190363151
    Abstract: A display device may include a scan line, a data line, a power line, a substrate, a transistor, a light emitting device, a light shielding member, and a shielding layer. The scan line extends in a first direction and may transfer a scan signal. The data line extends in a second direction and may transfer a data signal. The power line is spaced from the data line and may transfer a driving voltage. The light emitting device is electrically connected to the transistor. The light shielding member is disposed between the substrate and the transistor. The shielding layer is electrically connected to the power line. The light shielding member includes a body member and a bridge member. The body member overlaps the transistor. The bridge member extends in the second direction from the body member and overlaps the shielding layer.
    Type: Application
    Filed: February 11, 2019
    Publication date: November 28, 2019
    Inventors: Dong Soo KIM, Won Kyu KWAK, Hyun Woong KIM, Joong Soo MOON, Seung Woo SUNG, Seung Kyu LEE, Jung Hun YI
  • Publication number: 20190355755
    Abstract: Disclosed is a display device including: a substrate including a display area for displaying an image and a peripheral area neighboring the display area; a plurality of signal lines formed in the display area; a pad formed in the peripheral area; and a plurality of connection wires for connecting the signal lines and the pad, wherein a first connection wire and a second connection wire neighboring the first connection wire from among the plurality of connection wires are disposed on different layers, and the first connection wire and the second connection wire, which are formed to extend from the pad and are bent at least twice to have at least one being bent toward backward direction, are disposed in the peripheral area.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 21, 2019
    Inventors: Seung-Kyu Lee, Tae-Hoon Kwon, Ji-Hyun Ka
  • Publication number: 20190355289
    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: July 29, 2019
    Publication date: November 21, 2019
    Inventors: Won-Kyu Kwak, Hwan-Soo Jang, Seung-Kyu Lee
  • Patent number: 10446069
    Abstract: A display device includes a display panel, a first inspection line, a second inspection line, and an inspection circuit controlling a connection between the first inspection line and a first pixel group and a connection between the second inspection line and the second pixel group. The inspection circuit includes a switching part including a first switching part that controls the connection between the first inspection line and the first pixel group and a second switching part that controls the connection between the second inspection line and the second pixel group and a dummy circuit including a dummy transistor that is electrically connected to the switching part and including a first dummy electrode, a second dummy electrode that is connected to the first dummy electrode, and a dummy control electrode.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 15, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyunwoong Kim, Seung-kyu Lee, Kwang-min Kim, Jongwon Park
  • Publication number: 20190311662
    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: Application
    Filed: January 24, 2019
    Publication date: October 10, 2019
    Inventors: Hyunwoong KIM, Seung-Kyu Lee
  • Publication number: 20190312096
    Abstract: An organic light emitting diode (“OLED”) display device includes a substrate having a display region having a light emitting region and a peripheral region surrounding the light emitting region, a pad region at a first side of the display region, and a trench at a second side of the display region, a plurality of light emitting structures on the light emitting region of the substrate, an active pattern along a profile of the trench on the peripheral region of the substrate, the active pattern being adjacent to the trench and including a pattern protrusion, and an upper gate wiring on and overlapping the active pattern, the upper gate wiring having a wiring protrusion adjacent to the pattern protrusion.
    Type: Application
    Filed: March 7, 2019
    Publication date: October 10, 2019
    Inventors: Jisu NA, Seung-Kyu LEE, Kwang-Min KIM
  • Publication number: 20190304376
    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: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: Seung-Kyu LEE, Kwang-Min KIM, Byoung Sun KIM
  • Publication number: 20190304365
    Abstract: A pixel includes: an organic light emitting diode; a first transistor for controlling an amount of driving current flowing from a first voltage line connected to a second node to a second voltage line via the organic light emitting diode, corresponding to a voltage of a first node; a second transistor connected between a data line and the second node, the second transistor having a gate electrode connected to a first scan line; a third transistor connected between the first voltage line and a third node, the third transistor having a turn-on period that does not overlap with that of the second transistor; a fourth transistor connected to the third node, the fourth transistor having a gate electrode connected to the first scan line; a first capacitor connected between the first voltage line and the first node; and a second capacitor connected between the data line and the third node.
    Type: Application
    Filed: December 6, 2018
    Publication date: October 3, 2019
    Inventors: Chae Han Hyun, Seung Kyu Lee
  • Publication number: 20190304375
    Abstract: An emission driver according to example embodiments includes a plurality of stages each having an input block; an output block; a first signal processing block controlling a voltage of a first node; a second signal processing block controlling a voltage of a fourth node in response to the signal supplied to a third input terminal and a voltage of a fifth node; a third signal processing block controlling the voltage of the fourth node; a fourth signal processing block controlling the voltage of the third node; and a stabilization block electrically connected between the input block and the output block to limit a voltage drop between the first node and the third node. The stabilization block may limit a voltage drop between a second node and the fourth node by lowering a voltage of a second power source to the fifth node.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Inventors: Hyun Woong KIM, Seung Kyu LEE, Won Mi HWANG
  • Publication number: 20190304356
    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: June 19, 2019
    Publication date: October 3, 2019
    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: 10429703
    Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Wan Namgung, Ik Han Oh, Seung Kyu Lee, Ho Jun Lee, Ki Pyo Hong
  • Publication number: 20190295471
    Abstract: A pixel includes an organic light emitting diode (OLED), a pixel circuit, and first and second transistors. The OLD includes a cathode electrode connected to a second power source. The pixel circuit includes a driving transistor having a gate electrode initialized by a third power source. The driving transistor controls the amount of current flowing from a first power source to the second power source via the OLED. The first transistor is connected between a fourth power source and the second power source and an anode electrode of the OLED. The first transistor is turned on based on a scan signal is supplied to a scan line. The second transistor is connected between a data line and the pixel circuit. The second transistor is turned on when the scan signal is supplied to the ith scan line.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 26, 2019
    Inventors: JIN TAE JEONG, Min Ku Lee, Ji Hyun Ka, Tae Hoon Kwon, Seung Kyu Lee, Seung Ji Cha