Patents by Inventor HwaDong Han

HwaDong Han 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: 11476445
    Abstract: A display device includes a substrate which includes a display area and a non-display area adjacent to the display area, a first planarization layer which is at least partially disposed in the display area, a second planarization layer which is disposed in the non-display area and is spaced apart from the first planarization layer, a contact unit disposed between the first planarization layer and the second planarization layer in the non-display area, and a cathode which extends from the display area to the non-display area to be electrically connected to the contact unit. Accordingly, the first planarization layer and the second planarization layer are spaced apart from each other so that a path through which moisture permeates into the display area through the second planarization layer may be blocked.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: October 18, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Geondo Park, HwaDong Han, Taekyun Kim, Jinwoo Lee
  • Publication number: 20220108635
    Abstract: A display device includes a display panel having a display area and a non-display area and a polyimide substrate. The display device includes a transistor disposed above the substrate in the display area, a flexible film disposed on a side surface of the non-display area and connected to the substrate, and a conductive layer disposed below the substrate and applied with a low potential power voltage from the flexible film to improve an edge burn-in due to the polarization by offsetting positive charges in the polyimide substrate.
    Type: Application
    Filed: August 24, 2021
    Publication date: April 7, 2022
    Inventors: Geondo Park, ChangHoon Lee, HwaDong Han, Yeolhyeong Lee
  • Publication number: 20210043871
    Abstract: A display device includes a substrate which includes a display area and a non-display area adjacent to the display area, a first planarization layer which is at least partially disposed in the display area, a second planarization layer which is disposed in the non-display area and is spaced apart from the first planarization layer, a contact unit disposed between the first planarization layer and the second planarization layer in the non-display area, and a cathode which extends from the display area to the non-display area to be electrically connected to the contact unit. Accordingly, the first planarization layer and the second planarization layer are spaced apart from each other so that a path through which moisture permeates into the display area through the second planarization layer may be blocked.
    Type: Application
    Filed: July 22, 2020
    Publication date: February 11, 2021
    Inventors: Geondo PARK, HwaDong HAN, Taekyun KIM, Jinwoo LEE
  • Patent number: 9741747
    Abstract: A display device comprising a display panel that includes an active area, the active area including a data line positioned on a substrate in a first direction and transferring a data signal, a gate line positioned on the substrate in a second direction and transferring a gate signal, a thin film transistor connected to the gate line and the data line, and a plurality of pixels driven by the thin film transistor, a first pad coupled to a first signal line disposed in a data signal area wherein the first signal line is connected to the data line, and a first non-signal line disposed in a first non-signal area wherein the first non-signal line is disconnected from the data line, the first non-signal area being disposed outside the data signal area, a second pad coupled to a second signal line disposed in a gate signal area wherein the second signal line is connected to the gate line, and a second non-signal line disposed in a second non-signal area wherein the second non-signal line is disconnected from the gate
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 22, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: SoonJae Hwang, DuHwan Oh, HwaDong Han
  • Publication number: 20170141129
    Abstract: A display device comprising a display panel that includes an active area, the active area including a data line positioned on a substrate in a first direction and transferring a data signal, a gate line positioned on the substrate in a second direction and transferring a gate signal, a thin film transistor connected to the gate line and the data line, and a plurality of pixels driven by the thin film transistor, a first pad coupled to a first signal line disposed in a data signal area wherein the first signal line is connected to the data line, and a first non-signal line disposed in a first non-signal area wherein the first non-signal line is disconnected from the data line, the first non-signal area being disposed outside the data signal area, a second pad coupled to a second signal line disposed in a gate signal area wherein the second signal line is connected to the gate line, and a second non-signal line disposed in a second non-signal area wherein the second non-signal line is disconnected from the gate
    Type: Application
    Filed: January 26, 2017
    Publication date: May 18, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: SoonJae HWANG, DuHwan OH, HwaDong HAN
  • Patent number: 9589992
    Abstract: The present invention relates to a display panel including a static electricity preventing pattern and a display device having the same. An aspect of the present invention provides a display device or a display panel in which a dummy pattern having a pattern identical to or similar to a line of a signal area is positioned between the signal area and a non-signal area, in a pad including the signal area and the non-signal area.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 7, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: SoonJae Hwang, DuHwan Oh, HwaDong Han
  • Publication number: 20160190119
    Abstract: The present invention relates to a display panel including a static electricity preventing pattern and a display device having the same. An aspect of the present invention provides a display device or a display panel in which a dummy pattern having a pattern identical to or similar to a line of a signal area is positioned between the signal area and a non-signal area, in a pad including the signal area and the non-signal area.
    Type: Application
    Filed: November 13, 2015
    Publication date: June 30, 2016
    Applicant: LG DISPLAY CO., LTD.
    Inventors: SoonJae HWANG, DuHwan OH, HwaDong HAN
  • Patent number: 9349754
    Abstract: A display device including a substrate including a display area and a non-display area, wherein the non-display area comprises a gate metal line positioned on the substrate, a gate insulating layer insulating the gate metal layer, a data metal line positioned on the gate insulating layer, and two or more protective layers positioned in a region in which the gate metal line and the data metal line overlap above the data metal line.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 24, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jangkyun Chung, Suwoong Lee, Hwadong Han, Hoeyong Kim, Kyungyun Kang, Hyunsoo Jang
  • Patent number: 9190169
    Abstract: A shift register of the present disclosure includes a plurality of stages. Each stage includes transistors belonging to a first group for activating a Q node, transistors belonging to a second group for discharging odd and even QB nodes, transistors belonging to a third group for being activated by the odd and even QB nodes and for discharging the Q node, and a sensing circuit for sensing a threshold voltage of at least one of the transistor belonging to the third group at a period when the Q node is discharged. The shift register of the present disclosure avoids the problem of erroneous operation due to lowering of device characteristics.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 17, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: HwaDong Han, ChongHun Park, IlGi Jeong, JoonMin Park
  • Publication number: 20150060867
    Abstract: A display device including a substrate including a display area and a non-display area, wherein the non-display area comprises a gate metal line positioned on the substrate, a gate insulating layer insulating the gate metal layer, a data metal line positioned on the gate insulating layer, and two or more protective layers positioned in a region in which the gate metal line and the data metal line overlap above the data metal line.
    Type: Application
    Filed: July 10, 2014
    Publication date: March 5, 2015
    Inventors: Jangkyun CHUNG, Suwoong LEE, Hwadong HAN, Hoeyong KIM, Kyungyun KANG, Hyunsoo JANG
  • Publication number: 20140091997
    Abstract: The present disclosure relates to a shift register, and more particularly, a shift register having a sensing circuit for quantitatively measuring a threshold voltage shifted level of a thin film transistor, which is deteriorated due to a continuously applied direct-current (DC) voltage, in a shift register having thin film transistors using oxide silicon as an active layer. The present disclosure may provide a shift register capable of overcoming an erroneous operation caused due to lowering of device characteristics, by further connecting a sensing transistor to thin film transistors configuring the shift register formed on a display panel to sense a level of threshold voltage shift, and driving the shift register by dividing one frame into odd and even periods according to the sensing result.
    Type: Application
    Filed: December 27, 2012
    Publication date: April 3, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HwaDong Han, ChongHun Park, IIGi Jeong, JoonMin Park