Patents by Inventor Won-Kyu Kwak

Won-Kyu Kwak 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: 20210240301
    Abstract: A display apparatus includes a substrate including a display region and a non-display region, a display element layer, a pad group, a touch electrode layer, and a touch insulating layer. The display element layer includes display elements provided in the display region in a plan view. The pad group may include output pads provided on substrate and provided in the non-display region in the plan view. The touch electrode layer is provided on the display element layer. The touch insulating layer is provided on the display element layer and contacts the touch electrode layer. An intaglio pattern is provided in the touch insulating layer overlapped with the non-display region, and the intaglio pattern is not overlapped with the pad group.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 5, 2021
    Inventors: Kiwook KIM, Kyongtae PARK, Hyesong KWUN, Dae-won LEE, Donghoon JEONG, Won-kyu KWAK, Kwangmin KIM, JoongSoo MOON, Changkyu JIN, Kyu-sik CHO, Sungho CHO
  • Patent number: 11083054
    Abstract: A flexible display panel and a display apparatus including the flexible display panel are disclosed. The flexible display panel includes an encapsulated panel, a first protective film on one side of the encapsulated panel, and a second protective film on another side of the encapsulated panel. The encapsulated panel includes a flexible panel and a flexible encapsulation member on the flexible panel. The flexible panel includes a first region on a first plane and that includes a display region, and a second region on a second plane that is bent with respect to the first plane and that includes a non-display region. The flexible encapsulation member encapsulates the display region. The display apparatus also includes a support unit for maintaining a shape of the flexible panel.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: August 3, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hyun Ka, Won-Kyu Kwak
  • 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: 11069269
    Abstract: A display device according to exemplary embodiments includes: a display panel including: a first opening and a second opening and displaying an image; a first crack sensing line disposed around the first opening; and a second crack sensing line disposed around the second opening, wherein a crack around the first opening is sensed by disconnection of the first crack sensing line, and a crack around the second opening is sensed by disconnection of the second crack sensing line.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: July 20, 2021
    Inventors: Kwang Sae Lee, Won Kyu Kwak, Ki Myeong Eom
  • Publication number: 20210217336
    Abstract: A display device includes a display area configured to include a plurality of pixels and a plurality of data lines connected to the pixels. A hole area is disposed within the display area. A hole crack detection line is disposed adjacent to the hole area and surrounds the hole area. The device includes first and second detection lines which include first and second detection transfer lines and first and second detection receiving lines, respectively. A test controller electrically connects the first detection receiving line to a first data line and the second detection receiving line to a second data line. Pixels connected to the first data line that is connected to a first bright-line transistor and pixels connected to the second data line that is connected to a second bright-line transistor are configured to emit light when a crack occurs in the hole crack detection line.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Kwang Sae LEE, Won Kyu KWAK, Ki Myeong EOM
  • Publication number: 20210216166
    Abstract: A touch screen panel includes first and second sense cells on a same layer and coupling patterns that couple adjacent ones of the first sense cells and adjacent ones of the second sense cells to each other, respectively. The coupling patterns do not cross with each other, thereby improving the ability of the coupling patterns to withstand static electricity. A dummy line formed of a same material as the sense cells may be formed between the first and second sense cells, and the dummy line is electrically coupled to a guard ring located in an area outside of a display area of the touch screen panel, making it possible to overcome the effects of static electricity applied to the front surface of the touch screen panel as well as the side surface thereof.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Do-Youb Kim, Won-Kyu Kwak, Brent Jang
  • Patent number: 11061295
    Abstract: A display device includes a first display area including a plurality of first pixel areas and a second display area including a plurality of second pixel areas and a plurality of light transmitting areas. Each of the plurality of first pixel areas includes at least one first pixel to display an image. Each of the plurality of second pixel areas includes at least one second pixel to display the image. The light transmitting area does not include a pixel capable of displaying the image and has higher light transmittance than the second pixel area. In the second display area, at least one of the plurality of light transmitting areas is between two second pixel areas adjacent in a first direction, and at least one of the plurality of light transmitting areas is between two second pixel areas adjacent in a second direction different from the first direction.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: July 13, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Chol Bang, Won Kyu Kwak, Dong Wook Kim, Jin Woo Park, Sun-Ja Kwon
  • 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
  • Patent number: 11063242
    Abstract: An organic light-emitting display apparatus including a substrate; a display unit which defines an active area of the substrate and includes a thin film transistor; concave-convex portions protruded from the substrate in an area outside the active area; and an encapsulation layer which encapsulates the display unit. The thin film transistor includes an active layer, a gate insulating layer on the active layer, a gate electrode, a source electrode, a drain electrode, and an interlayer insulating layer between the gate electrode and the source electrode, and between the gate electrode and the drain electrode. The concave-convex portions include portions of the gate insulating layer and the interlayer insulating layer, and the encapsulation layer covers the concave-convex portions.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: July 13, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Won-Kyu Kwak
  • Patent number: 11056043
    Abstract: A display device includes pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a scan signal to each of the first scan lines at a first frequency to drive the display device at a first driving frequency, and to supply the scan signal to each of the first scan lines at a second frequency to drive the display device at a second driving frequency lower than the first driving frequency; a second scan driver to supply a scan signal to each of the second scan lines at the first frequency to drive the display device at the first driving frequency, and to supply the scan signal to each of the second scan lines at the second frequency to drive the display device at the second driving frequency; an emission driver to supply an emission control signal to each of the emission control lines at the first frequency; and a data driver to supply a data signal to each of the data lines in response to the scan signal supplied to each of the first scan lines
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: July 6, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong Hwan Oh, Ji Hyun Ka, Ki Myeong Eom, Hai Jung In, Jin Jeon, Won Kyu Kwak, Hyun Lee, Hwan Soo Jang, Jin Tae Jeong
  • Patent number: 11054950
    Abstract: A display device and a touch sensor, the display device including a first substrate in which a display area and a peripheral area around the display area are defined; an element layer which is located on the first substrate and comprises a first light emitting element located in the display area and a second light emitting element at least partially located in the peripheral area; and a touch sensor which is located on the element layer. The touch sensor includes: a touch electrode portion which is located in the display area and overlaps the first light emitting element; a touch signal line which is located in the peripheral area and is connected to the touch electrode portion; and a light transmission control pattern portion which is located in the peripheral area, overlaps the second light emitting element, and extends along a boundary between the display area and the peripheral area.
    Type: Grant
    Filed: January 1, 2020
    Date of Patent: July 6, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Yong Eom, Ki Cheol Kim, Jae Yoon Chang, Won Kyu Kwak, Young Bae Jung
  • Publication number: 20210201764
    Abstract: A display device may include: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a first scan signal to the first scan lines in a first period and a second period; a second scan driver to supply a second scan signal to the second scan lines in the first period without supplying the second scan signal to the second scan lines in the second period; an emission driver to supply an emission control signal to the emission control lines in the first period and the second period; a data driver configured to supply data signals to the data lines in the first period without supplying the second scan signal to the second scan lines in the second period; and a power supply to supply a first initialization power source to the pixels through a first initialization and to supply a second initialization power source to the pixels through a second power line.
    Type: Application
    Filed: October 22, 2020
    Publication date: July 1, 2021
    Inventors: Kyong Hwan Oh, Jin Tae Jeong, Ji Hyun Ka, Won Kyu Kwak, Hyung Jun Park, Chang Soo Pyon, Ji Eun Lee, Hai Jung In, Won Mi Hwang
  • Publication number: 20210183302
    Abstract: A display device including a display panel including scan lines, emission control lines, and pixels connected to the scan lines and the emission control lines; a first emission driver sequentially providing first emission control signals to odd-numbered emission control lines among the emission control lines in a first frame section; a second emission driver sequentially providing second emission control signals to even-numbered emission control lines among the emission control lines in a second frame section that is continuous from the first frame section; and a scan driver sequentially providing scan signals to the scan lines in each of the first and second frame sections.
    Type: Application
    Filed: August 4, 2020
    Publication date: June 17, 2021
    Inventors: Jae Sic LEE, Won Kyu KWAK
  • Publication number: 20210175310
    Abstract: A pixel includes a pixel circuit and an organic light emitting diode. The pixel circuit has first, second, third, and fourth transistors. The first transistor controls an amount of current flowing from a first driving power supply coupled to a first node to a second driving power supply through the organic light emitting diode. The turns on when a scan signal is supplied to a first scan line. The third transistor turns on when a scan signal is supplied to a second scan line. The fourth transistor turns on when a scan signal is supplied to a third scan line. The first transistor is a p-type Low Temperature Poly-Silicon thin film transistor and the third transistor and the fourth transistor are n-type oxide semiconductor thin film transistors.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ji Hyun KA, Han Sung BAE, Won Kyu KWAK
  • Patent number: 11031436
    Abstract: A display device includes a substrate, a pixel area, and a plurality of data lines. The substrate includes display and non-display areas. The pixel area is in the display area and includes a first pixel column and a second pixel column. The pixels in the first and second columns emit light of different colors. The data lines are respectively coupled to the first pixel column and the second pixel column. In the non-display area, a data line is coupled to one of the first or second pixel columns corresponding to a color on which influence of a resistance is greater than on another color. The data lines has a line or contact structure with a resistance less than a resistance of a line or contact structure of a remaining data line coupled to a remaining pixel column.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 8, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Ja Kwon, Won Kyu Kwak, Hwan Soo Jang, Seung Yeon Cho, Hyun Ae Park
  • Publication number: 20210166635
    Abstract: An organic light-emitting display device includes: a data driver configured to divide one frame into an odd-numbered sub-frame and an even-numbered sub-frame, to divide frame data for implementing the one frame into odd-numbered sub-frame data and even-numbered sub-frame data, to provide the odd-numbered sub-frame data to the data lines in the odd-numbered sub-frame, and to provide the even-numbered sub-frame data to the data lines in the even-numbered sub-frame; an odd-numbered scan driver electrically connected to odd-numbered scan lines to provide an odd-numbered scan signal to the odd-numbered scan lines in the odd-numbered sub-frame; an even-numbered scan driver electrically connected to even-numbered scan lines to provide an even-numbered scan signal to the even-numbered scan lines in the even-numbered sub-frame; an emission driver to provide an emission signal to emission line groups formed by grouping the emission lines by two adjacent emission lines in the odd-numbered sub-frame and the even-numbered
    Type: Application
    Filed: November 30, 2020
    Publication date: June 3, 2021
    Inventors: Hai-Jung IN, Won Kyu KWAK, Jae-Sic LEE
  • Patent number: 11024804
    Abstract: A display device includes: a central area having a display area on a substrate; and a peripheral area around the central area; a plurality of pads arranged along one direction in the central area; a plurality of insulating patterns adjacent the plurality of pads; and a slit between the plurality of insulating patterns in the peripheral area, wherein the slit is formed by removing at least a portion of an insulating material of the plurality of insulating patterns.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: June 1, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang-Wan Kim, Won-Kyu Kwak
  • Patent number: 11024216
    Abstract: A display substrate and a display device including the display substrate are disclosed. In one aspect, the display substrate includes a plurality of pixels formed in a substantially circular pixel area and a driving circuit formed in a peripheral area surrounding the pixel area and configured to drive the pixels. A boundary is formed between the pixel area and the peripheral area, and the boundary is substantially concentric with respect to an arc defining the substantially circular pixel area. The driving circuit comprises a conductive pattern having a first side which extends in a peripheral direction crossing the boundary.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye-Jin Shin, Won-Kyu Kwak, Kwang-Min Kim
  • Patent number: 11016349
    Abstract: A display device includes a substrate including a first display area and a second display area. The first display area includes first pixel areas, each including one or more first pixels. The second display area includes second pixel areas including one or more second pixels and a light transmittance area having a higher light transmittance than the second pixel area. The first and second display areas include a common electrode that transmits a constant common voltage. The common electrode in the second display area includes patterned regions that correspond to a first light transmittance area included in the light transmittance area. A thickness of the common electrode in the patterned regions is smaller than a thickness of the common electrode in a region other than the patterned regions or equals zero. The patterned regions and the second pixel areas extend alternately along a first direction in the second display area.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 25, 2021
    Assignee: SAMMSUNG DISPLAY CO., LTD.
    Inventors: Dong Wook Kim, Won Kyu Kwak, Jin Woo Park, Hyun-Chol Bang
  • Patent number: 11011728
    Abstract: A display device includes a first substrate having a display area and a non-display area around the display area, a light-emitting element in the display area and including a pixel electrode, a common electrode, and an emission member between the pixel electrode and the common electrode, a common voltage transfer line in the non-display area and electrically connected to the common electrode, a second substrate opposite the first substrate, and a sealant in the non-display area between the first substrate and the second substrate, the sealant surrounding the display area, wherein the common voltage transfer line includes a first portion overlapping the sealant and a second portion positioned between the sealant and the display area, and wherein the second portion has at least one opening or cut-out portion.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: May 18, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Ja Kwon, Won Kyu Kwak, Dong Wook Kim, Han Soo Kim, Ae Shin