公开(公告)号：US11029790B2

公开(公告)日：2021-06-08

申请号：US16802236

申请日：2020-02-26

Applicant: LG DISPLAY CO., LTD.

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

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

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US10768719B2

公开(公告)日：2020-09-08

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: G06F3/01 ,  G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  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：US10606389B2

公开(公告)日：2020-03-31

申请号：US15791665

申请日：2017-10-24

Applicant: LG DISPLAY CO., LTD.

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

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

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US10324324B2

公开(公告)日：2019-06-18

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

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.