Patents by Inventor Dojin Kim

Dojin Kim 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: 12242682
    Abstract: A transparent display device with a touch sensor can include a plurality of subpixels disposed in a non-transmission area of a substrate, the plurality of subpixels including a light emitting element with an anode electrode, a light emitting layer, and a cathode electrode; and a touch sensor in a transmission area of the substrate and including a touch sensor electrode. Also, the transparent display device can include an undercut structure for separating the cathode electrode from the touch sensor electrode of the touch sensor, in which the undercut structure is in the transmission area of the substrate and includes a plurality of inorganic layers including an opening area between an edge area of the touch sensor and an edge area of one of the plurality of subpixels; and an organic pattern on an edge area of the plurality of inorganic layers, the organic pattern being spaced apart from the subpixels.
    Type: Grant
    Filed: November 7, 2023
    Date of Patent: March 4, 2025
    Assignee: LG DISPLAY CO., LTD.
    Inventors: JaeHee Park, MiReum Lee, Dojin Kim
  • Patent number: 12229362
    Abstract: A transparent display device may include a substrate, a transmissive area, a non-transmissive area, and a plurality of subpixels provided in the non-transmissive area, having a light emitting element, which may include an anode electrode, a light emitting layer and a cathode electrode. The transparent display device may further include a touch sensor disposed in the transmissive area, including a touch sensor electrode, and a sensing transistor for sensing a voltage of the touch sensor. The cathode electrode of the light emitting element and the touch sensor electrode of the touch sensor may be provided on a same layer and may be separated by a first undercut structure. The cathode electrode may extend to the transmissive area such that the cathode electrode is located in the transmissive area and in the non-transmissive area. The sensing transistor may be disposed to overlap the cathode electrode located in the transmissive area.
    Type: Grant
    Filed: December 8, 2023
    Date of Patent: February 18, 2025
    Assignee: LG DISPLAY CO., LTD.
    Inventors: MiReum Lee, JaeHee Park, Dojin Kim
  • Publication number: 20250056925
    Abstract: Provided is a display device. The display device comprises a substrate including an active area in which a plurality of sub pixels is disposed and a non-active area. The display device comprises a plurality of transistors disposed in each of the plurality of sub pixels on the substrate. The display device comprises a plurality of light emitting diodes disposed in each of the plurality of sub pixels on the substrate. The display device comprises a plurality of first alignment keys disposed on the substrate. The display device comprises an insulating layer which includes a plurality of inorganic insulating layers and a plurality of organic insulating layers disposed on the substrate. In an area which overlaps the plurality of first alignment keys, the plurality of organic insulating layers is disposed on the plurality of inorganic insulating layers.
    Type: Application
    Filed: June 17, 2024
    Publication date: February 13, 2025
    Inventors: Dojin Kim, Eunjeong Shin
  • Publication number: 20250040310
    Abstract: A display device can include a substrate, a reflective functional layer disposed on the substrate, a light emitting diode disposed on the reflective functional layer, a semiconductor element disposed on the substrate, a common line disposed on the substrate, a first connection electrode electrically connecting the light emitting diode and the semiconductor element, and a second connection electrode electrically connecting the light emitting diode and the common line. The center of the light emitting diode is spaced apart from the center of the reflective functional layer.
    Type: Application
    Filed: October 16, 2024
    Publication date: January 30, 2025
    Applicant: LG Display Co., Ltd.
    Inventors: Dojin KIM, Seok KIM, SeongHwan JU
  • Patent number: 12148864
    Abstract: A display device includes a light emitting diode LED element having a horizontal length in an X-axis direction and a vertical length in a Y-axis direction, a driving element connected to the LED element, and a reflective functional layer positioned to overlap an upper portion or a lower portion of the LED element, wherein the reflective functional layer includes a central area overlapping the LED element, an outer area including a graduation smaller than the horizontal length or the vertical length of the LED element, and a peripheral area between the central area and the outer area. Accordingly, it is possible to reduce a contact defect of the light emitting diode and the driving element by checking a position where the light emitting diode is attached on a substrate and a degree of misalignment.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: November 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dojin Kim, Seok Kim, SeongHwan Ju
  • Publication number: 20240290767
    Abstract: A manufacturing method of a display device may include: transferring light emitting diodes onto a display panel using an alignment key on a wafer; determining a defective light emitting diode which is missed or misplaced from a transferring position; and transferring at least one light emitting diode for repairing the defective light emitting diode onto the display panel using a repair alignment key. The method can improve a repair process efficiency. In a display device, at least one light emitting diode of a pixel may be in a second electrode area of an electrode area, and each of other light emitting diodes of the pixel may be disposed in a first electrode area of an electrode area of the pixel but not in a second electrode area of the electrode area. Some corresponding light emitting diodes of two pixels may be separated by a distance different from a pixel distance.
    Type: Application
    Filed: February 22, 2024
    Publication date: August 29, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Dojin KIM, Hanyoung YANG
  • Publication number: 20240268213
    Abstract: A flexible display device of which esthetic appearance is improved by reducing a bezel is disclosed. The flexible display device comprises a substrate including a display area and a non-display area including a bending area; a link line in the non-display area on the substrate; and a bending connection line in the bending area pf the substrate and connected with the link line, and the bending connection line located between a first buffer layer and a second buffer layer of the flexible display device.
    Type: Application
    Filed: April 18, 2024
    Publication date: August 8, 2024
    Inventors: Saemleenuri Lee, SeYeoul Kwon, Dojin Kim
  • Publication number: 20240260381
    Abstract: A transparent display device with a touch sensor can include a plurality of subpixels disposed in a non-transmissive area of a substrate, the plurality of subpixels including a light emitting element having an anode electrode, a light emitting layer and a cathode electrode; a touch sensor disposed in a transmissive area of the substrate, the touch sensor including a touch sensor electrode. Also, the transparent display device can include a touch line disposed between the substrate and the anode electrode in the non-transmissive area, the touch line being configured to supply a touch sensing voltage to the touch sensor; and a shielding layer disposed between the touch line and the anode electrode in the non-transmissive area.
    Type: Application
    Filed: November 13, 2023
    Publication date: August 1, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: MiReum LEE, JaeHee PARK, Dojin KIM
  • Publication number: 20240256060
    Abstract: A transparent display device with a touch sensor can include a plurality of subpixels disposed in a non-transmission area of a substrate, the plurality of subpixels including a light emitting element with an anode electrode, a light emitting layer, and a cathode electrode; and a touch sensor in a transmission area of the substrate and including a touch sensor electrode. Also, the transparent display device can include an undercut structure for separating the cathode electrode from the touch sensor electrode of the touch sensor, in which the undercut structure is in the transmission area of the substrate and includes a plurality of inorganic layers including an opening area between an edge area of the touch sensor and an edge area of one of the plurality of subpixels; and an organic pattern on an edge area of the plurality of inorganic layers, the organic pattern being spaced apart from the subpixels.
    Type: Application
    Filed: November 7, 2023
    Publication date: August 1, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: JaeHee PARK, MiReum LEE, Dojin KIM
  • Publication number: 20240256063
    Abstract: A transparent display device including a substrate including a transmissive area and a non-transmissive area; a touch line on the substrate in the non-transmissive area; a touch bridge line in the non-transmissive area; and a touch contact electrode electrically connected to the touch bridge line; and a touch sensor in the transmissive area and including a touch sensor electrode overlapping with the touch contact electrode. Further, the touch sensor contacts the touch contact electrode so the touch sensor is electrically connected to the touch bridge line.
    Type: Application
    Filed: November 3, 2023
    Publication date: August 1, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: JaeHee Park, MiReum Lee, Dojin Kim
  • Publication number: 20240260408
    Abstract: A transparent display device with a touch sensor is provided, which comprises a first substrate provided with a display area including a transmissive area and a non-transmissive area and a non-display area disposed near the display area, a second substrate facing the first substrate, a plurality of subpixels provided in the non-transmissive area on the first substrate, including a light emitting element consisting of an anode electrode, a light emitting layer and a cathode electrode, a touch sensor disposed in the transmissive area on the first substrate, including a touch sensor electrode, and an organic layer provided on one surface of the second substrate, which faces the first substrate, including a first protrusion pattern protruded toward the touch sensor in an area overlapped with the touch sensor.
    Type: Application
    Filed: December 13, 2023
    Publication date: August 1, 2024
    Inventors: Dojin Kim, JaeHee Park, MiReum Lee
  • Publication number: 20240224660
    Abstract: A transparent display device with a touch sensor is disclosed, which comprises: a substrate including a transmissive area and a non-transmissive area; a plurality of subpixels in the non-transmissive area, a subpixel including a light emitting element including an anode electrode, a light emitting layer, and a cathode electrode; a touch sensor in the transmissive area and including a touch sensor electrode in the transmissive area; a first undercut structure between the cathode electrode of the light emitting element and the touch sensor electrode of the touch sensor; a signal line between the first undercut structure and the substrate; and an etch stop layer between the signal line and the first undercut structure.
    Type: Application
    Filed: November 1, 2023
    Publication date: July 4, 2024
    Inventors: Dojin Kim, JaeHee Park, MiReum Lee, Nara Shin
  • Publication number: 20240211063
    Abstract: A transparent display device may include a substrate, a transmissive area, a non-transmissive area, and a plurality of subpixels provided in the non-transmissive area, having a light emitting element, which may include an anode electrode, a light emitting layer and a cathode electrode. The transparent display device may further include a touch sensor disposed in the transmissive area, including a touch sensor electrode, and a sensing transistor for sensing a voltage of the touch sensor. The cathode electrode of the light emitting element and the touch sensor electrode of the touch sensor may be provided on a same layer and may be separated by a first undercut structure. The cathode electrode may extend to the transmissive area such that the cathode electrode is located in the transmissive area and in the non-transmissive area. The sensing transistor may be disposed to overlap the cathode electrode located in the transmissive area.
    Type: Application
    Filed: December 8, 2023
    Publication date: June 27, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: MiReum LEE, JaeHee PARK, Dojin KIM
  • Patent number: 11991918
    Abstract: A flexible display device of which esthetic appearance is improved by reducing a bezel is disclosed. The flexible display device comprises a substrate including a display area and a non-display area including a bending area; a link line in the non-display area on the substrate; and a bending connection line in the bending area pf the substrate and connected with the link line, and the bending connection line located between a first buffer layer and a second buffer layer of the flexible display device.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: May 21, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Saemleenuri Lee, SeYeoul Kwon, Dojin Kim
  • Patent number: 11895791
    Abstract: A display device according to an exemplary embodiment of the present disclosure includes a display panel having a display area, a back cover disposed on a rear surface of the display panel, a first roller which winds or unwinds the back cover and the display panel, and a second roller which is disposed above the first roller to move in a vertical direction, the back cover and the display panel being overlaid on the second roller. The emission area is flexibly adjusted during the partial view so as to suppress a burn-in issue and improve the lifespan of the display device.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: February 6, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: JaeSung Lee, Jaehyeong Kim, Dojin Kim
  • Patent number: 11758777
    Abstract: A flexible display device according to an exemplary embodiment of the present disclosure may include a substrate divided into a display area and a non-display area; a first buffer layer disposed on the substrate; a second buffer layer disposed under the substrate; a support member disposed under the second buffer layer; a transistor and a light emitting element disposed above the first buffer layer in the display area; a conductive layer disposed in the second buffer layer in the non-display area; and a connection member disposed on the first buffer layer in the non-display area and electrically connected to the conductive layer through a contact hole, so that an effect of minimizing luminance unevenness of a display panel due to the use of a polyimide (PI) substrate by grounding and removing charges accumulated in the PI substrate, can be provided.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: September 12, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jaehyeong Kim, JaeSung Lee, Dojin Kim
  • Publication number: 20230217747
    Abstract: A display panel for a display device includes a substrate, a light blocking layer disposed over the substrate, a signal line disposed over the substrate, overlapping with a portion of the light blocking layer, and having at least one branched portion, at least one protection pattern overlapping with a portion of the branched portion of the signal line, a pixel electrode disposed over the protection pattern, a light emitting layer disposed over the pixel electrode, and a common electrode disposed over the light emitting layer, wherein the branched portion of the signal line includes an area not overlapping with the light blocking layer, and wherein in the area not overlapping with the light blocking layer, the branched portion overlaps with the protection pattern, thereby preventing damage to the electrodes of the light emitting element due to a laser beam during the repair of the signal line.
    Type: Application
    Filed: November 4, 2022
    Publication date: July 6, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sungman HAN, Dojin KIM, Seongkwang KIM
  • Publication number: 20230171999
    Abstract: A display device includes data lines are disposed on or over a substrate in a first direction, a first scan line extends through a first subpixel in a second direction, a first auxiliary pattern is disposed in the first subpixel in the second direction and electrically connected to the first scan line through one or more first contact holes in an interlayer insulating film, the first scan line includes a first line portion and a wider first contact portion, the first auxiliary pattern includes a first line pattern portion and a wider first seating pattern portion, the first contact portion is connected to the first seating pattern portion through the one or more first contact holes, the first contact portion is symmetrical with respect to a central axis of the first line portion, and the first seating pattern portion is symmetrical with respect to a central axis of the first line pattern portion.
    Type: Application
    Filed: November 1, 2022
    Publication date: June 1, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seongkwang KIM, Dojin KIM
  • Publication number: 20230071194
    Abstract: A display device includes a first substrate including a display area including a plurality of sub-pixels and a non-display area and made of one of a transparent conducting oxide and an oxide semiconductor, the display device also includes a first insulating layer disposed on the first substrate and a plurality of light emitting elements disposed in the plurality of sub-pixels on the first insulating layer, and the first substrate is made of one of a transparent conducting oxide and an oxide semiconductor, thus the first substrate can be implemented as a thin film and flexibility of the display device can be improved.
    Type: Application
    Filed: August 10, 2022
    Publication date: March 9, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jaehyeong KIM, JungIl LEE, JaeSung LEE, Dojin KIM, Youngwan KIM
  • Publication number: 20220271243
    Abstract: A flexible display device of which esthetic appearance is improved by reducing a bezel is disclosed. The flexible display device comprises a substrate including a display area and a non-display area including a bending area; a link line in the non-display area on the substrate; and a bending connection line in the bending area pf the substrate and connected with the link line, and the bending connection line located between a first buffer layer and a second buffer layer of the flexible display device.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 25, 2022
    Inventors: Saemleenuri LEE, SeYeoul KWON, Dojin KIM