公开(公告)号：US10203802B2

公开(公告)日：2019-02-12

申请号：US15478613

申请日：2017-04-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Sungsu Han ,  CheolSe Kim ,  SungChul Kim ,  Suyun Ju

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

Abstract: A driver circuit, a touch display device, and a method of driving the touch display device. Touching force is sensed by driving a plurality of first electrodes disposed in a display panel and a second electrode located outside of the display panel. The first electrodes corresponding to force sensors for sensing the touching force and the second electrode are driven by alternating in-phase driving and antiphase driving. Touching force components are selectively and accurately extracted from sensing data, and the touching force can be accurately sensed.

公开(公告)号：US09733760B2

公开(公告)日：2017-08-15

申请号：US14984969

申请日：2015-12-30

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim ,  BuYeol Lee ,  YongChan Park ,  Suyun Ju

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0414 ,  G06F3/044 ,  G06F2203/04105

Abstract: The present disclosure provides an in-cell touch type display device, a touch circuit, a display driver, and an in-cell touch type display device driving method, which can not only sense the position of a touch generated by the user, but also sense the touch force, with which the user presses the screen during the touch, in order to provide various functions in various types.

公开(公告)号：US12182349B2

公开(公告)日：2024-12-31

申请号：US18227055

申请日：2023-07-27

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim

IPC: G06F3/041 ,  G09G3/3258 ,  G06F3/044

Abstract: A touch display device can include a display panel including a plurality of data lines, a plurality of gate lines, a plurality of subpixels, and a plurality of touch electrodes, each of the plurality of subpixels including a light emitting element and a driving transistor; and a signal conversion circuit configured to supply a driving signal to the plurality of subpixels in the display panel or a driving circuit connected to the display panel. Also, the driving signal can have a signal waveform corresponding to a signal waveform of a first power signal or a signal waveform of a second power signal.

公开(公告)号：US12153752B2

公开(公告)日：2024-11-26

申请号：US18454604

申请日：2023-08-23

Applicant: LG Display Co., Ltd.

Inventor： Jinseong Kim ,  JuHan Kim ,  Haewon Lee ,  CheolSe Kim

IPC: G06F3/041 ,  G06F3/044 ,  H10K59/12 ,  H10K59/122 ,  H10K59/124 ,  H10K59/40

Abstract: The present disclosure provide a display device and a display panel, the display panel including: a transistor disposed over a substrate; a first planarization layer and a second planarization layer disposed over the transistor; an anode electrode disposed in a light emitting area on the second planarization layer and electrically connected to the transistor through an anode contact hole; a touch buffer layer disposed to cover the anode electrode; a touch electrode including an overlap area overlapping a portion of the anode electrode in a non-light emitting area on the touch buffer layer; a touch line disposed under the touch electrode and electrically connected to the touch electrode through a touch contact hole; a bank covering the touch electrode and including an opening in which the light emitting area is placed; and an emission layer and a cathode electrode sequentially disposed on the anode electrode.

公开(公告)号：US11983372B2

公开(公告)日：2024-05-14

申请号：US17745765

申请日：2022-05-16

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim ,  JuHan Kim

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0412 ,  G06F3/0448 ,  G06F2203/04104

Abstract: The present disclosure relates to a touch display device, a touch panel, a touch sensing circuit and a touch sensing method. In the touch display device, the touch panel, and the touch sensing circuit, and in the method of performing touch sensing therein, a structure in which a plurality of touch sensor groups is arranged is provided, and one of a self-capacitance touch sensing scheme and a mutual-capacitance touch sensing scheme is adaptively implemented according to the type and position of a touch event. Therefore, the number of signal lines and the number of touch channels may be reduced, and the ghost phenomenon can be reduced or be overcome when multiple touches occur.

公开(公告)号：US11921944B2

公开(公告)日：2024-03-05

申请号：US17942805

申请日：2022-09-12

Applicant: LG Display Co., Ltd.

Inventor： HoonBae Kim ,  CheolSe Kim ,  SeungMok Shin ,  JuHan Kim ,  YongChan Park ,  HyunHo Park

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/136 ,  G06F3/044 ,  G06F3/047 ,  G09G3/20

CPC classification number: G06F3/0412 ,  G06F3/04164 ,  G06F3/0443 ,  G06F3/047 ,  G09G3/2096 ,  G02F1/13338 ,  G02F1/13606 ,  G02F2201/123 ,  G06F2203/04107 ,  G09G2354/00

Abstract: Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.

公开(公告)号：US11422665B2

公开(公告)日：2022-08-23

申请号：US17499737

申请日：2021-10-12

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim

IPC: G06F3/044 ,  G06F3/041

Abstract: Embodiments of the present disclosure relate to touch display devices, and more particularly, to a touch display device capable of reducing the number of touch lines and touch channels through a structure in which touch electrodes are arranged in diagonal directions.

公开(公告)号：US20220206638A1

公开(公告)日：2022-06-30

申请号：US17499737

申请日：2021-10-12

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim

IPC: G06F3/044 ,  G06F3/041

Abstract: Embodiments of the present disclosure relate to touch display devices, and more particularly, to a touch display device capable of reducing the number of touch lines and touch channels through a structure in which touch electrodes are arranged in diagonal directions.

公开(公告)号：US11334203B2

公开(公告)日：2022-05-17

申请号：US16561667

申请日：2019-09-05

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim ,  JuHan Kim

IPC: G06F3/044 ,  G06F3/041

Abstract: Embodiments of the present disclosure relate to a touch display device and, more particularly, to a touch display device including a touch panel that can reduce the number of signal lines and the number of touch channels and can prevent or reduce a ghost phenomenon in multi-touching. In particular, the touch display device includes a woven type touch panel in which touch electrodes are formed by disposing electrodes to be entangled and electrically connecting the entangled electrodes such that electrically disconnected points exist, thereby being able to reduce the number of signal lines and the number of touch channels and prevent or reduce a ghost phenomenon in multi-touching.

公开(公告)号：US10963107B2

公开(公告)日：2021-03-30

申请号：US16591155

申请日：2019-10-02

Applicant: LG Display Co., Ltd.

Inventor： SangHyuck Bae ,  BuYeol Lee ,  SeungRok Shin ,  CheolSe Kim ,  DeukSu Lee ,  Hyunwoo Jang ,  Jaeseung Kim ,  YoungGyu Kim ,  Hyunsuk Cho

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/044

Abstract: Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.