公开(公告)号：US10955964B2

公开(公告)日：2021-03-23

申请号：US16719456

申请日：2019-12-18

Applicant: LG Display Co., Ltd.

Inventor： DoYoung Jung ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  Jongsung Kim

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

Abstract: A touchscreen display device includes a display panel, a touch sensor, and a touch circuit. The touch sensor is disposed in an area corresponding to the display panel to output an uplink signal including signal intensity information regarding an intensity of a downlink signal output from an active pen. The touch circuit controls the touch sensor to output the uplink signal.

公开(公告)号：US20170329167A1

公开(公告)日：2017-11-16

申请号：US15669872

申请日：2017-08-04

Applicant: LG Display Co., Ltd.

Inventor： SungChul Kim ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

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

CPC classification number: G02F1/13338 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04112

Abstract: Exemplary embodiments of the present invention relate to a touch technology, and more specifically, to a signal control circuit, a power control circuit, a drive circuit, a timing controller, a touch system, and a touch sensitive display device and a driving method thereof that can simply swing various voltages in a display device for a touch mode period by using a modulated ground voltage obtained by swinging a ground voltage, thereby effectively providing touch driving and preventing unnecessary parasitic capacitance from being generated not only in an active area but also in all other areas.

公开(公告)号：US20170102825A1

公开(公告)日：2017-04-13

申请号：US14984657

申请日：2015-12-30

Applicant: LG Display Co., Ltd.

Inventor： SungChul Kim ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G02F1/13338 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04112

Abstract: Exemplary embodiments of the present invention relate to a touch technology, and more specifically, to a signal control circuit, a power control circuit, a drive circuit, a timing controller, a touch system, and a touch sensitive display device and a driving method thereof that can simply swing various voltages in a display device for a touch mode period by using a modulated ground voltage obtained by swinging a ground voltage, thereby effectively providing touch driving and preventing unnecessary parasitic capacitance from being generated not only in an active area but also in all other areas.

公开(公告)号：US11494027B2

公开(公告)日：2022-11-08

申请号：US17492234

申请日：2021-10-01

Applicant: LG Display Co., Ltd.

Inventor： Jongsung Kim ,  HyungUk Jang ,  YoungGyu Kim ,  NamYong Gong

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

Abstract: Discussed is a touch display device and a touch sensing method. More particularly, according to the number of pens that have been paired, the frame can be reconfigured by changing the type of all or part of the multiple touch time periods in the frame, and it is possible to provide high-speed pen search and pen pairing by designing a highly scalable pen protocol to flexibly change the pen mode.

公开(公告)号：US11243644B2

公开(公告)日：2022-02-08

申请号：US16726530

申请日：2019-12-24

Applicant: LG Display Co., Ltd.

Inventor： Suyun Ju ,  HyungUk Jang ,  Sungsu Han ,  DoYoung Jung ,  SangHyuck Bae ,  Jongsung Kim

IPC: G06F3/041 ,  G06F3/038 ,  G06F3/0354 ,  G06F3/0484 ,  G06F3/044

Abstract: A touch display device comprises a touch panel including a plurality of touch electrodes; and a touch driving circuit configured to sense one or more of the plurality of touch electrodes, wherein the touch driving circuit has an operation period including a plurality of touch intervals that includes a first sensing interval and a second sensing interval, and the first sensing interval includes at least a first time division sensing interval and the second sensing interval includes at least a second time division sensing interval, and wherein the touch driving circuit is configured to detect a pen signal output from a first pen through one or more touch electrodes of the plurality of touch electrodes during the first time division sensing interval, and detect a pen signal output from a second pen through one or more touch electrodes of the plurality of touch electrodes during the second time division sensing interval.

公开(公告)号：US20190204939A1

公开(公告)日：2019-07-04

申请号：US16233537

申请日：2018-12-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  DoYoung Jung

IPC: G06F3/0354 ,  G06F3/041 ,  G06F3/01 ,  G06F3/0488

Abstract: The aspects of the present disclosure relate to a touch display device, a touch system, a touch driving circuit, a pen, and a pen sensing method, and more particularly, to a touch display device, a touch system, a touch driving circuit, a pen, and a pen sensing method, which may receive a first downlink signal and a second downlink signal output from a pen through all or some of a plurality of touch electrodes and may sense the pen based on received signal strength for each touch electrode for the first downlink signal and received signal strength for each touch electrode for the second downlink signal. According to the aspects of the present disclosure, the pen may be accurately sensed even when a user uses the pen in a tilted manner.

公开(公告)号：US11275464B2

公开(公告)日：2022-03-15

申请号：US17022768

申请日：2020-09-16

Applicant: LG Display Co., Ltd.

Inventor： HyungUk Jang ,  NamYong Gong ,  SangHyuck Bae ,  YoungGyu Kim ,  DoYoung Jung ,  Hyunsuk Cho ,  Jongsung Kim

IPC: G06F3/041 ,  G06F3/044

Abstract: Provided are a touch display device and a touch circuit that can effectively simultaneously sense a plurality of pens in a predetermined touch frame time (a driving time) by simultaneously performing sensing of pen information and sensing of a pen position using pen data.

公开(公告)号：US11048360B2

公开(公告)日：2021-06-29

申请号：US16140903

申请日：2018-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： HyungUk Jang ,  SeungSeok Oh ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

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

Abstract: Disclosed are a touch display device, a touch circuit, a pen, a touch system, and a multi-pen sensing method for receiving downlink signals output from two or more pens through one or more touch electrodes on a panel and distinguishably sensing the two or more pens based on unique information of the received downlink signals.

公开(公告)号：US09760213B2

公开(公告)日：2017-09-12

申请号：US14984657

申请日：2015-12-30

Applicant: LG Display Co., Ltd.

Inventor： SungChul Kim ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G02F1/13338 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04112

Abstract: Exemplary embodiments of the present invention relate to a touch technology, and more specifically, to a signal control circuit, a power control circuit, a drive circuit, a timing controller, a touch system, and a touch sensitive display device and a driving method thereof that can simply swing various voltages in a display device for a touch mode period by using a modulated ground voltage obtained by swinging a ground voltage, thereby effectively providing touch driving and preventing unnecessary parasitic capacitance from being generated not only in an active area but also in all other areas.

公开(公告)号：US11360601B2

公开(公告)日：2022-06-14

申请号：US17078544

申请日：2020-10-23

Applicant: LG Display Co., Ltd.

Inventor： YoungGyu Kim ,  Hyunsuk Cho ,  NamYong Gong ,  HyungUk Jang ,  DoYoung Jung ,  Jongsung Kim

IPC: G06F3/041

Abstract: Embodiments of the present disclosure relate to a touch circuit, a touch display device, and a touch driving method, and more specifically, to a touch circuit, a touch display device, and a touch driving method for simply configuring a system for transmitting signals between a touch display device and a stylus by uniformly arranging intervals between touch driving periods in a touch frame.