公开(公告)号：US11775112B2

公开(公告)日：2023-10-03

申请号：US17946693

申请日：2022-09-16

Applicant: LG Display Co., Ltd.

Inventor： HyongHwan Kim ,  JinBong Chung ,  Sunkyung Shin

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/044 ,  G06F3/0412 ,  G06F3/0443

Abstract: A touch driving circuit and a touch display device are disclosed. A group sensing control switch connected between lines connected to sensing units included in a touch driving circuit is disposed, thereby providing a structure in which one sensing unit can drive a touch electrode driven by another sensing unit. One sensing unit simultaneously drives two or more touch electrodes according to an operation state of a group sensing control switch to perform touch sensing, thereby providing a touch driving circuit and a touch display device capable of maintaining the resolution of touch sensing and improving touch sensitivity according to a driving environment.

公开(公告)号：US11914814B2

公开(公告)日：2024-02-27

申请号：US17946693

申请日：2022-09-16

Applicant: LG Display Co., Ltd.

Inventor： HyongHwan Kim ,  JinBong Chung ,  Sunkyung Shin

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/044 ,  G06F3/0412 ,  G06F3/0443

Abstract: A touch driving circuit and a touch display device are disclosed. A group sensing control switch connected between lines connected to sensing units included in a touch driving circuit is disposed, thereby providing a structure in which one sensing unit can drive a touch electrode driven by another sensing unit. One sensing unit simultaneously drives two or more touch electrodes according to an operation state of a group sensing control switch to perform touch sensing, thereby providing a touch driving circuit and a touch display device capable of maintaining the resolution of touch sensing and improving touch sensitivity according to a driving environment.

公开(公告)号：US20230113773A1

公开(公告)日：2023-04-13

申请号：US17946693

申请日：2022-09-16

Applicant: LG Display Co., Ltd.

Inventor： HyongHwan Kim ,  JinBong Chung ,  Sunkyung Shin

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch driving circuit and a touch display device are disclosed. A group sensing control switch connected between lines connected to sensing units included in a touch driving circuit is disposed, thereby providing a structure in which one sensing unit can drive a touch electrode driven by another sensing unit. One sensing unit simultaneously drives two or more touch electrodes according to an operation state of a group sensing control switch to perform touch sensing, thereby providing a touch driving circuit and a touch display device capable of maintaining the resolution of touch sensing and improving touch sensitivity according to a driving environment.

公开(公告)号：US11435846B2

公开(公告)日：2022-09-06

申请号：US17119025

申请日：2020-12-11

Applicant: LG DISPLAY CO., LTD.

Inventor： HyongHwan Kim

IPC: G06F3/041 ,  G06F3/044

Abstract: Provided are a touch display device, a driver circuit, and a driving method. Combined integrated circuits generate a load-free common voltage supplied to touch electrodes during a touch sensing period, thereby preventing signal distortion and improving the performance of touch sensing. Gate driving integrated circuits generate a load-free gate low voltage supplied to gate lines during the touch sensing period, thereby preventing signal distortion and improving the performance of touch sensing.

公开(公告)号：US10732769B2

公开(公告)日：2020-08-04

申请号：US16172169

申请日：2018-10-26

Applicant: LG Display Co., Ltd.

Inventor： HyongHwan Kim ,  HyeongWon Kang ,  Youngwoo Jo

IPC: G06F3/041 ,  G06F3/044

Abstract: The present embodiments relate to a touch display device and a touch driving circuit, which may detect a short circuit occurring between touch electrodes and between a plurality of touch lines. The touch display device comprises: a touch display panel in which touch electrodes and a plurality of touch lines are disposed, wherein the touch electrodes are divided into n multiplexer groups and each multiplexer group comprises m touch electrodes, and the plurality of touch lines correspond to and are electrically connected to the touch electrodes; a touch driving circuit comprising a multiplexer part and a pre-amplifying part, and configured to drive the touch electrodes, wherein the multiplexer part comprises m multiplexer circuits, and the pre-amplifying part comprises m pre-amplifiers; and a touch controller configured to detect an existence of a touch or a location of a touch performed by one or more of a finger and a pen.