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).
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Patent number: 11476445Abstract: 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: GrantFiled: July 22, 2020Date of Patent: October 18, 2022Assignee: LG Display Co., Ltd.Inventors: Geondo Park, HwaDong Han, Taekyun Kim, Jinwoo Lee
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Publication number: 20220108635Abstract: 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: ApplicationFiled: August 24, 2021Publication date: April 7, 2022Inventors: Geondo Park, ChangHoon Lee, HwaDong Han, Yeolhyeong Lee
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Publication number: 20210043871Abstract: 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: ApplicationFiled: July 22, 2020Publication date: February 11, 2021Inventors: Geondo PARK, HwaDong HAN, Taekyun KIM, Jinwoo LEE
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Patent number: 9741747Abstract: 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 gateType: GrantFiled: January 26, 2017Date of Patent: August 22, 2017Assignee: LG DISPLAY CO., LTD.Inventors: SoonJae Hwang, DuHwan Oh, HwaDong Han
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Publication number: 20170141129Abstract: 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 gateType: ApplicationFiled: January 26, 2017Publication date: May 18, 2017Applicant: LG DISPLAY CO., LTD.Inventors: SoonJae HWANG, DuHwan OH, HwaDong HAN
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Patent number: 9589992Abstract: 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: GrantFiled: November 13, 2015Date of Patent: March 7, 2017Assignee: LG Display Co., Ltd.Inventors: SoonJae Hwang, DuHwan Oh, HwaDong Han
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Publication number: 20160190119Abstract: 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: ApplicationFiled: November 13, 2015Publication date: June 30, 2016Applicant: LG DISPLAY CO., LTD.Inventors: SoonJae HWANG, DuHwan OH, HwaDong HAN
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Patent number: 9349754Abstract: 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: GrantFiled: July 10, 2014Date of Patent: May 24, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Jangkyun Chung, Suwoong Lee, Hwadong Han, Hoeyong Kim, Kyungyun Kang, Hyunsoo Jang
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Patent number: 9190169Abstract: 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: GrantFiled: December 27, 2012Date of Patent: November 17, 2015Assignee: LG Display Co., Ltd.Inventors: HwaDong Han, ChongHun Park, IlGi Jeong, JoonMin Park
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Publication number: 20150060867Abstract: 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: ApplicationFiled: July 10, 2014Publication date: March 5, 2015Inventors: Jangkyun CHUNG, Suwoong LEE, Hwadong HAN, Hoeyong KIM, Kyungyun KANG, Hyunsoo JANG
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Publication number: 20140091997Abstract: 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: ApplicationFiled: December 27, 2012Publication date: April 3, 2014Applicant: LG DISPLAY CO., LTD.Inventors: HwaDong Han, ChongHun Park, IIGi Jeong, JoonMin Park