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).

  • Publication number: 20220210934
    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: Application
    Filed: December 3, 2021
    Publication date: June 30, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: JaeSung LEE, Jaehyeong KIM, Dojin KIM
  • Patent number: 11362292
    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: July 30, 2020
    Date of Patent: June 14, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Saemleenuri Lee, SeYeoul Kwon, Dojin Kim
  • Publication number: 20220102589
    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: Application
    Filed: July 14, 2021
    Publication date: March 31, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Dojin KIM, Seok KIM, SeongHwan JU
  • Patent number: 11172583
    Abstract: A display system includes a first display coupled to a roller and a second display coupled to the roller such that the first and second displays can be rolled about the roller for storage and transportation and unrolled from the roller to form a large area display. The second rollable display can be rolled about the roller with a rear surface of the second rollable display in direct contact with an outer surface of the roller and the first rollable display can be rolled about the roller with a front surface of the first rollable display in direct contact with a front surface of the second rollable display. First and second flexible films, first and second source printed circuit boards, first and second flexible cables, and first and second control printed circuit boards can be located inside the roller.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: November 9, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: JaeSung Lee, DongYoon Kim, DoJin Kim
  • Publication number: 20210134931
    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: Application
    Filed: October 1, 2020
    Publication date: May 6, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Jaehyeong KIM, JaeSung LEE, Dojin KIM
  • Publication number: 20200403009
    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: July 30, 2020
    Publication date: December 24, 2020
    Inventors: Saemleenuri LEE, SeYeoul KWON, Dojin KIM
  • Patent number: 10847545
    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 of 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: January 22, 2019
    Date of Patent: November 24, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Saemleenuri Lee, SeYeoul Kwon, Dojin Kim
  • Patent number: 10741615
    Abstract: A display device is disclosed. The display device includes a substrate including first to fourth subpixels, a first buffer layer positioned on the substrate, the first buffer layer including a silicon nitride layer and a silicon oxide layer, and a thin film transistor and an organic light emitting diode positioned on the first buffer layer. Each of the first to fourth subpixels includes an emission portion and a non-emission portion. A thickness of the silicon nitride layer in the non-emission portion is greater than a thickness of the silicon nitride layer in the emission portion.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: August 11, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Mingu Cho, Dojin Kim, Miae Kim
  • Publication number: 20200214149
    Abstract: A display system includes a first display coupled to a roller and a second display coupled to the roller such that the first and second displays can be rolled about the roller for storage and transportation and unrolled from the roller to form a large area display. The second rollable display can be rolled about the roller with a rear surface of the second rollable display in direct contact with an outer surface of the roller and the first rollable display can be rolled about the roller with a front surface of the first rollable display in direct contact with a front surface of the second rollable display. First and second flexible films, first and second source printed circuit boards, first and second flexible cables, and first and second control printed circuit boards can be located inside the roller.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 2, 2020
    Inventors: JaeSung Lee, DongYoon Kim, DoJin Kim
  • Patent number: 10326107
    Abstract: A flexible display device includes a first substrate defining a display region having a pixel array therein and a non-display region outside of the display region; a second substrate on the first substrate to cover the pixel array; at least one circuit attached to one side of the first substrate with a protruded portion protruding outwardly from an edge of the first substrate; and a first protective film below the first substrate and overlapping at least part of the protruded portion of the circuit.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 18, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hyunjoo Song, Hyunju Jung, Jongju An, Dojin Kim
  • Publication number: 20190157312
    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 of 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: January 22, 2019
    Publication date: May 23, 2019
    Inventors: Saemleenuri LEE, SeYeoul KWON, Dojin KIM
  • Patent number: 10224344
    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 5, 2016
    Date of Patent: March 5, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Saemleenuri Lee, SeYeoul Kwon, Dojin Kim
  • Publication number: 20180190730
    Abstract: A display device is disclosed. The display device includes a substrate including first to fourth subpixels, a first buffer layer positioned on the substrate, the first buffer layer including a silicon nitride layer and a silicon oxide layer, and a thin film transistor and an organic light emitting diode positioned on the first buffer layer. Each of the first to fourth subpixels includes an emission portion and a non-emission portion. A thickness of the silicon nitride layer in the non-emission portion is greater than a thickness of the silicon nitride layer in the emission portion.
    Type: Application
    Filed: December 28, 2017
    Publication date: July 5, 2018
    Applicant: LG Display Co., Ltd.
    Inventors: Mingu CHO, Dojin KIM, Miae KIM
  • Publication number: 20180151836
    Abstract: A flexible display device includes a first substrate defining a display region having a pixel array therein and a non-display region outside of the display region; a second substrate on the first substrate to cover the pixel array; at least one circuit attached to one side of the first substrate with a protruded portion protruding outwardly from an edge of the first substrate; and a first protective film below the first substrate and overlapping at least part of the protruded portion of the circuit.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 31, 2018
    Applicant: LG Display Co., Ltd.
    Inventors: Hyunjoo SONG, Hyunju JUNG, Jongju AN, Dojin KIM
  • Patent number: 9818974
    Abstract: A flexible display device comprises a back plate coupled to a rear surface of a flexible display panel with a bending portion, having an opening portion overlapped with the bending portion; and a buffer member covering inner sides of the back plate, which are provided by the opening portion.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: November 14, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: SeYeoul Kwon, Dojin Kim, YounYeol Yu
  • Publication number: 20170179423
    Abstract: A flexible display device comprises a back plate coupled to a rear surface of a flexible display panel with a bending portion, having an opening portion overlapped with the bending portion; and a buffer member covering inner sides of the back plate, which are provided by the opening portion.
    Type: Application
    Filed: May 20, 2016
    Publication date: June 22, 2017
    Inventors: SeYeoul Kwon, Dojin Kim, YounYeol Yu
  • Publication number: 20170170206
    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 5, 2016
    Publication date: June 15, 2017
    Inventors: Saemleenuri LEE, SeYeoul KWON, Dojin KIM
  • Publication number: 20050255613
    Abstract: Disclosed in the present invention is a method for fabricating a triode-type field emitter, the method comprising the steps of: growing carbon nanotubes on a substrate using semiconductor-processing technology; coating an insulating material, particularly SOG (Spin-On-Glass), on the substrate having the carbon nanotubes grown thereon; drying the coated insulating material; and cutting the coated insulating material with a grinder to uniform height so as to control the height of the carbon nanotubes. According to the present invention, the following advantages are obtained: (1) the insulation between the carbon nanotubes and the substrate can be achieved so as to prevent leakage current, (2) the damage of the carbon nanotubes in the polishing step, (3) the adhesion between the carbon nanotubes and the substrate is maintained, (4) the field emission stability of the field emitter is improved.
    Type: Application
    Filed: May 13, 2004
    Publication date: November 17, 2005
    Inventors: Dojin Kim, Gyu Choi, Yousuk Cho
  • Publication number: 20050207964
    Abstract: The present application is directed to a method for synthesizing carbon nanotubes using magnetic fluid by thermal chemical vapor deposition. The method includes the steps of producing a catalytic metal using the magnetic fluid, coating the produced catalytic metal on a substrate, and thereby synthesizing carbon nanotubes.
    Type: Application
    Filed: March 22, 2004
    Publication date: September 22, 2005
    Inventors: Dojin Kim, Gyu Choi, Yousuk Cho
  • Patent number: 5296394
    Abstract: A manufacturing method of GaAs metal semiconductor FET is disclosed.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: March 22, 1994
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyuhwan Shim, Chulsoon Park, Dojin Kim, Sungjae Maeng, Jeonwook Yang, Youngkyu Choi, Jinyeong Kang, Kyungho Lee, Jinhee Lee