Patents by Inventor Hoiyong Kwon

Hoiyong Kwon 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: 11089700
    Abstract: A display device includes: a display panel, a back cover which supports the display panel on a rear surface of the display panel; at least one flexible film which is electrically connected to one end of the display panel and is on one surface of the back cover; a printed circuit board which is electrically connected to the at least one flexible film and on one surface of the back cover; and a roller on which the display panel and the back cover are wound or unwound, the roller being configured by a first flat portion, a second flat portion, and a curved portion. When the display panel and the back cover are fully wound around the roller, the at least one flexible film corresponds to the first flat portion, and the printed circuit board corresponds to the second flat portion.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: August 10, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: ChounSung Kang, Mi-Na Shin, SunBok Song, Hoiyong Kwon, GeunChang Park
  • Publication number: 20210150946
    Abstract: A display device includes a display panel; a back cover supporting the display panel on a rear surface of the display panel; a roller disposed on a rear surface of the back cover, wherein the display panel and the back cover are wound around or unwound from the roller; a flexible film electrically connected to a pad area of the display panel; and a sealing layer disposed to cover an end of the flexible film. At least some of elements of the display panel including a substrate may be extended beyond the sealing layer. Accordingly, it is possible to prevent cracks in the display panel due to the pressing by the cover plate and the overflow of the sealant, thereby solving the issues of driving failure and reliability of the display panel.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 20, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: JiHun SONG, Hoiyong KWON
  • Publication number: 20210144868
    Abstract: A display device includes a display panel; a back cover supporting the display panel on a rear surface of the display panel; one or more flexible films electrically connected to one end of the display panel and on a surface of the back cover; a film cover covering the flexible films and the end of the display panel; a printed circuit board electrically connected to the flexible films and on the surface of the back cover; and a roller having a first flat portion, a second flat portion, and a curved portion. The display panel and the back cover are wound around or unwound from the roller. The end of the display panel is in line with the first flat portion while the printed circuit board is in line with the second flat portion when the display panel and the back cover are fully wound around the roller.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 13, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: JiHun SONG, Hoiyong KWON
  • Patent number: 10985333
    Abstract: Discussed are a flexible display apparatus and a rollable display apparatus comprising the same, in which rigidity reliability is secured against a physical impact. The flexible display panel includes a display unit provided on a flexible substrate and a back cover disposed on a rear surface of the flexible display panel. The back cover includes a panel supporting part including a plurality of openings, having a size greater than a width of the flexible display panel, and supporting the flexible display panel, and a sidewall part protruding from each of one edge and another edge of the panel supporting part.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 20, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: DongYoon Kim, YounYeol Yu, Hoiyong Kwon
  • Publication number: 20210083024
    Abstract: A display device includes a display panel including an active area in which a plurality of pixels is defined and a pad area in which pads for applying signals to the plurality of pixels are placed; a back cover placed to overlap the display panel; and a roller configured to wind or unwind the back cover and the display panel and including a flat portion and a curved portion, wherein the pad area is placed to be inclined toward the flat portion.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 18, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: JiHun SONG, Moonsun LEE, Hoiyong KWON
  • Publication number: 20210074189
    Abstract: A display device includes a display panel, a first back cover which supports the display panel on a rear surface of the display panel; at least one flexible film which is electrically connected to a lower end of a rear surface of the display panel and is disposed on a rear surface of the first back cover; a printed circuit board which is electrically connected to the flexible film and disposed on the rear surface of the first back cover; a cover unit which accommodates the flexible films and the printed circuit board on the rear surface of the first back cover; and a roller around which the display panel and the first back cover are wound or unwound. Accordingly, a pad crack caused by a tension of the plurality of flexible films may be improved.
    Type: Application
    Filed: August 11, 2020
    Publication date: March 11, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Hoiyong KWON, JiHun SONG
  • Publication number: 20210056872
    Abstract: A display device according to an exemplary embodiment of the present disclosure includes a display panel, a back cover which supports the display panel on a rear surface of the display panel, a plurality of flexible films which is electrically connected to one end of the display panel and is disposed on one surface of the back cover, a printed circuit board which is electrically connected to the plurality of flexible films and disposed on the one surface of the back cover, and a roller to which the display panel and the back cover are wound or unwound, and the roller includes a flat portion and a first curved portion and a second curved portion having different radii of curvature. Accordingly, the damage of the plurality of flexible films and the printed circuit board may be reduced.
    Type: Application
    Filed: July 17, 2020
    Publication date: February 25, 2021
    Inventors: Hoiyong KWON, JiHun SONG
  • Publication number: 20210051809
    Abstract: A display device may include a display panel, a first back cover disposed on a rear surface of the display panel, at least one flexible film which is electrically connected to one end of the display panel and is bent toward a rear surface of the first back cover or a front surface of the display panel, and a printed circuit board which is electrically connected to the at least one flexible film and disposed on the rear surface of the first back cover or the at least one flexible film. The printed circuit board overlaps one end of the display panel. Accordingly, one end of the display panel in which the pad area which is vulnerable to the stress is disposed and the printed circuit board are maintained to be flat, to minimize the damage of the display device.
    Type: Application
    Filed: August 11, 2020
    Publication date: February 18, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: JiHun Song, ChounSung Kang, Mi-Na Shin, Hoiyong Kwon, GeunChang Park
  • Publication number: 20210029839
    Abstract: The present invention discloses a display device. The display device includes a display panel in which a plurality of pixels is defined; a back cover which overlaps the display panel; a roller which winds or unwinds the back cover and the display panel and includes a flat portion and a curved portion; and a fixing member which is configured to fix the back cover to the roller and on the flat portion and a part of the curved portion.
    Type: Application
    Filed: July 15, 2020
    Publication date: January 28, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Hoiyong KWON, JiHun SONG
  • Publication number: 20210029840
    Abstract: A display device includes a display panel in which a plurality of pixels is defined. The display device further includes a back cover configured to be rolled together with the display panel. The display device further includes a roller winding or unwinding the back cover and the display panel, and including a flat surface and a curved surface. The display device further includes a buffer member covering at least a part of the back cover fixed to the roller, and having a width smaller than a width of the display panel. Therefore, the display panel is wound around the roller with a gentle slope, and non-display areas on both side portions of the display panel are wound around a roller with a space by the buffer member. Accordingly, a stress applied to the display panel and a crack may be reduced to improve reliability of the display device.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 28, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Hoiyong KWON, JiHun SONG
  • Publication number: 20210007230
    Abstract: A display device includes: a display panel, a back cover which supports the display panel on a rear surface of the display panel; at least one flexible film which is electrically connected to one end of the display panel and is on one surface of the back cover; a printed circuit board which is electrically connected to the at least one flexible film and on one surface of the back cover; and a roller on which the display panel and the back cover are wound or unwound, the roller being configured by a first flat portion, a second flat portion, and a curved portion. When the display panel and the back cover are fully wound around the roller, the at least one flexible film corresponds to the first flat portion, and the printed circuit board corresponds to the second flat portion.
    Type: Application
    Filed: June 29, 2020
    Publication date: January 7, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: ChounSung KANG, Mi-Na SHIN, SunBok SONG, Hoiyong KWON, GeunChang PARK
  • Publication number: 20200373378
    Abstract: Disclosed are a display apparatus and a method for manufacturing the same. The display apparatus comprises: a multi-buffer layer; a pixel array layer formed on the multi-buffer layer and including a plurality of pixels respectively formed as the intersections of a plurality of gate lines and a plurality of data lines; an encapsulation layer formed on the pixel array layer; and an encapsulation substrate formed on the encapsulation layer and including a display area and a non-display area adjacent to the display area, wherein, the encapsulation substrate is for supporting the display area and the non-display area such that there is no base substrate in the display apparatus.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Inventors: Hoiyong KWON, MiReum LEE
  • Patent number: 10788693
    Abstract: A flexible display device is disclosed. The flexible display device may include a flexible substrate, a display device layer on a first surface of the flexible substrate, a receiving groove in a second surface of the flexible substrate, and a deformation-preventing layer in the receiving groove on the second surface of the flexible substrate.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: September 29, 2020
    Assignee: LG Display Co., Ltd
    Inventors: Hoiyong Kwon, MiReum Lee
  • Patent number: 10777629
    Abstract: Disclosed are a display apparatus and a method for manufacturing the same. The display apparatus comprises: a multi-buffer layer; a pixel array layer formed on the multi-buffer layer and including a plurality of pixels respectively formed as the intersections of a plurality of gate lines and a plurality of data lines; an encapsulation layer formed on the pixel array layer; and an encapsulation substrate formed on the encapsulation layer and including a display area and a non-display area adjacent to the display area, wherein, the encapsulation substrate is for supporting the display area and the non-display area such that there is no base substrate in the display apparatus.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: September 15, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoiyong Kwon, MiReum Lee
  • Patent number: 10707438
    Abstract: A light emitting display device includes a substrate including a plurality of sub pixel areas having an emission area and an anode contact area, a driving thin film transistor disposed in each of the plurality of sub pixel areas, a planarization layer disposed on the substrate, a cathode electrode disposed on the planarization layer overlapped with the emission area, a plurality of connection electrode patterns disposed on the planarization layer overlapped with the anode contact area, and connected with respective source electrodes of the driving thin film transistors disposed in the plurality of sub pixel areas by one-to-one correspondence, an emission layer disposed on the cathode electrode, and a plurality of anode electrodes disposed on the emission layer, and connected with the plurality of connection electrode patterns through the anode contact area by one-to-one correspondence.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoiyong Kwon, SeYeoul Kwon
  • Patent number: 10564676
    Abstract: A rollable display apparatus includes a flexible display panel, a panel extension sheet connected to the flexible display panel, and a housing module. The flexible display panel is configured to be loaded into and unloaded from the housing module. The rollable display apparatus further includes a roller part in the housing module that has a double roller structure. The roller part is configured to individually wind and unwind each of the panel extension sheet and the flexible display panel.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Hoiyong Kwon, DongYoon Kim
  • Publication number: 20190207150
    Abstract: Disclosed is a light emitting display device capable of realizing a uniform luminance, wherein the light emitting display device may include a substrate including a plurality of sub pixel areas having an emission area and an anode contact area adjacent to the emission area, a driving thin film transistor disposed in each of the plurality of sub pixel areas, a planarization layer disposed on the substrate and configured to cover the driving thin film transistor disposed in each of the plurality of sub pixel areas, a cathode electrode disposed on the planarization layer overlapped with the emission area in each of the plurality of sub pixel areas, a plurality of connection electrode patterns disposed on the planarization layer overlapped with the anode contact area in each of the plurality of sub pixel areas, and connected with respective source electrodes of the driving thin film transistors disposed in the plurality of sub pixel areas by one-to-one correspondence, an emission layer disposed on the cathode ele
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hoiyong Kwon, SeYeoul Kwon
  • Publication number: 20190198783
    Abstract: Discussed are a flexible display apparatus and a rollable display apparatus comprising the same, in which rigidity reliability is secured against a physical impact. The flexible display panel includes a display unit provided on a flexible substrate and a back cover disposed on a rear surface of the flexible display panel. The back cover includes a panel supporting part including a plurality of openings, having a size greater than a width of the flexible display panel, and supporting the flexible display panel, and a sidewall part protruding from each of one edge and another edge of the panel supporting part.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 27, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: DongYoon KIM, YounYeol YU, Hoiyong KWON
  • Publication number: 20190138058
    Abstract: A rollable display apparatus includes a flexible display panel, a panel extension sheet connected to the flexible display panel, and a housing module. The flexible display panel is configured to be loaded into and unloaded from the housing module. The rollable display apparatus further includes a roller part in the housing module that has a double roller structure. The roller part is configured to individually wind and unwind each of the panel extension sheet and the flexible display panel.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 9, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Hoiyong KWON, DongYoon KIM
  • Publication number: 20190131377
    Abstract: Disclosed are a display apparatus and a method for manufacturing the same. The display apparatus comprises: a multi-buffer layer; a pixel array layer formed on the multi-buffer layer and including a plurality of pixels respectively formed as the intersections of a plurality of gate lines and a plurality of data lines; an encapsulation layer formed on the pixel array layer; and an encapsulation substrate formed on the encapsulation layer and including a display area and a non-display area adjacent to the display area, wherein, the encapsulation substrate is for supporting the display area and the non-display area such that there is no base substrate in the display apparatus.
    Type: Application
    Filed: October 26, 2018
    Publication date: May 2, 2019
    Inventors: Hoiyong KWON, MiReum LEE