公开(公告)号：US11733575B2

公开(公告)日：2023-08-22

申请号：US17466471

申请日：2021-09-03

Applicant: LG DISPLAY CO., LTD.

Inventor： Ji-Hoon Yu ,  Hye-Ji Jeon ,  Kyoung-Seok Park ,  Key-Young Yang ,  Si-Hyun Kim ,  Hyun-Ho Park

IPC: G02F1/1368 ,  G02F1/1362

CPC classification number: G02F1/1368 ,  G02F1/136209 ,  G02F1/136222

Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other; a liquid crystal layer between the first and second substrates; a thin film transistor in a subpixel on an inner surface of first substrate; a pixel electrode connected to the thin film transistor; a common electrode generating an electric field with the pixel electrode; a black matrix in a border portion of the subpixel on an inner surface of the second substrate, the black matrix including a metallic material, and a voltage applied to the black matrix; and a color filter layer in a center portion of the subpixel on the black matrix.

公开(公告)号：US11614662B1

公开(公告)日：2023-03-28

申请号：US17892642

申请日：2022-08-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Si-Hyun Kim ,  Hyun-Ho Park

IPC: G06F3/044 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/1362 ,  G06F3/041 ,  G02F1/1368

Abstract: A touch display device includes a substrate; a thin film transistor over the substrate; a planarization layer over the thin film transistor; a touch line over the planarization layer; a touch insulation layer over the touch line; a touch electrode over the touch insulation layer; a pixel electrode over the touch electrode and connected to the thin film transistor, wherein the planarization layer has a first hole corresponding to a drain electrode of the thin film transistor, and the touch insulation layer has a second hole corresponding to the drain electrode, and wherein the second hole includes a first hole portion and a second hole portion connected to each other along a first direction, the first hole is disposed within the first hole portion, and the touch electrode is in contact with the touch line through the second hole portion.

公开(公告)号：US10466556B2

公开(公告)日：2019-11-05

申请号：US15388051

申请日：2016-12-22

Applicant: LG Display Co., Ltd.

Inventor： Hyun-Ho Park ,  Min-Ho Lee

IPC: G02F1/1368 ,  G09G3/36 ,  H01L27/12 ,  H01L29/417 ,  G02F1/1345 ,  H01L29/786

Abstract: A gate driving unit includes a plurality of stages sequentially outputting a plurality of gate signals, wherein each of the plurality of stages includes a first transistor including: a gate electrode; a gate insulating layer on the gate electrode; and a source electrode and a drain electrode on the gate insulating layer over the gate electrode, the source electrode and the drain electrodes spaced apart from each other, and wherein a first area where the gate electrode and the source electrode overlap each other is 2.5 times to 6 times of a second area where the gate electrode and the drain electrode overlap each other.

公开(公告)号：US11507227B2

公开(公告)日：2022-11-22

申请号：US17494568

申请日：2021-10-05

Applicant: LG Display Co., Ltd.

Inventor： Kyoung-Seok Park ,  Ki-Jeong Lee ,  Hyun-Ho Park ,  Sung-Jin Um

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display device and a method of driving the same are disclosed. The touch display device includes: a touch display panel displaying an image and sensing a touch; a plurality of touch electrodes disposed on the touch display panel and divided into a plurality of blocks; a plurality of gate lines disposed on the touch display panel and overlapping the plurality of touch electrodes; and a touch display driving circuit supplying a common voltage to the plurality of touch electrodes and supplying a gate voltage to the plurality of gate lines, wherein the common voltage has a first voltage before and after a first compensation period corresponding to a high level period of the gate voltage supplied to one of the plurality of gate lines firstly overlapping one of the plurality of touch electrodes and has a second voltage lower than the first voltage during the first compensation period.

公开(公告)号：US10186203B2

公开(公告)日：2019-01-22

申请号：US15232618

申请日：2016-08-09

Applicant: LG Display Co., Ltd.

Inventor： Hyun-Ho Park ,  Key-Young Yang

IPC: G09G3/36 ,  G09G3/3266 ,  G11C19/28

Abstract: A gate driving unit includes first to nth stages sequentially outputting first to nth gate pulses, respectively, according to a start signal, wherein n is an integer larger than 2; and a dummy stage receiving the nth gate pulse, charging an (n+1)th Q node and outputting a dummy pulse synchronized with a clock signal, the dummy stage receiving a reset signal and discharging the (n+1)th Q node, wherein the first to nth stages receive the reset signal and charge first QB to nth QB nodes, respectively.

公开(公告)号：US20220206627A1

公开(公告)日：2022-06-30

申请号：US17494568

申请日：2021-10-05

Applicant: LG Display Co., Ltd.

Inventor： Kyoung-Seok Park ,  Ki-Jeong Lee ,  Hyun-Ho Park ,  Sung-Jin Um

IPC: G06F3/041

Abstract: A touch display device and a method of driving the same are disclosed. The touch display device includes: a touch display panel displaying an image and sensing a touch; a plurality of touch electrodes disposed on the touch display panel and divided into a plurality of blocks; a plurality of gate lines disposed on the touch display panel and overlapping the plurality of touch electrodes; and a touch display driving circuit supplying a common voltage to the plurality of touch electrodes and supplying a gate voltage to the plurality of gate lines, wherein the common voltage has a first voltage before and after a first compensation period corresponding to a high level period of the gate voltage supplied to one of the plurality of gate lines firstly overlapping one of the plurality of touch electrodes and has a second voltage lower than the first voltage during the first compensation period.