公开(公告)号：US12135850B2

公开(公告)日：2024-11-05

申请号：US18242353

申请日：2023-09-05

Applicant: LG Display Co., Ltd.

Inventor： Yangsik Lee ,  SangHyuck Bae

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display device can include a substrate having a display area and a non-display area located outside of the display area; at least one subpixel disposed in the display area including a display anode electrode, an emission layer and a display cathode electrode; and a display driving transistor disposed in the display area and being configured to drive the display anode electrode. Also, the touch display device can include a touch electrode disposed in the display area; a touch driving transistor disposed in the display area and configured to drive the touch electrode, the touch driving transistor including a first active layer, a first source electrode, a first drain electrode and a first gate electrode; and a control transistor configured to control turn-on and turn-off operations of the touch driving transistor, and including a second active layer, a second source electrode, a second drain electrode and a second gate electrode.

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：US11513641B2

公开(公告)日：2022-11-29

申请号：US17187146

申请日：2021-02-26

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

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.

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：US09715137B2

公开(公告)日：2017-07-25

申请号：US14980174

申请日：2015-12-28

Applicant: LG Display Co., Ltd.

Inventor： JinSeong Kim ,  CheolSe Kim ,  JuHan Kim ,  SungChul Kim ,  SangHyuck Bae

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/1368 ,  G06F3/041 ,  G06F3/044

CPC classification number: G02F1/13338 ,  G02F1/136286 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04103

Abstract: A liquid crystal display (LCD) device includes a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer interposed therebetween, black matrices provided on the lower substrate, a color filter provided between the black matrices, and a common electrode provided on the entire surface of the lower substrate, a gate line and a data line provided on the upper substrate and intersect with each other to define a pixel area, a thin film transistor (TFT) present in the pixel area of the upper substrate, and a pixel electrode electrically in contact with the TFT, wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line.

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：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：US10725572B2

公开(公告)日：2020-07-28

申请号：US16197285

申请日：2018-11-20

Applicant: LG Display Co., Ltd.

Inventor： HoonBae Kim ,  CheolSe Kim ,  SangHyuck Bae

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

Abstract: The present embodiments relate to a touch display device, a touch system, a driving circuit, and a driving method. The touch display device may include a display panel configured to have a plurality of data lines, a plurality of gate lines, and a plurality of common electrodes, which are arranged thereon, and a driving circuit configured to supply an uplink signal to at least a subset of the plurality of common electrodes disposed in at least a first region of the display panel during the display blank period to enable the pen to detect the uplink signal when the pen is in contact with or is adjacent to the display panel.

公开(公告)号：US09870075B2

公开(公告)日：2018-01-16

申请号：US14961203

申请日：2015-12-07

Applicant: LG DISPLAY CO., LTD.

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

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

CPC classification number: G06F3/0383 ,  G06F3/03545 ,  G06F3/038 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: Disclosed is a touch screen device for accurately detecting a touch by using a touch pen without having a separate sensor provided in a touch panel. The touch screen device includes a touch screen including a plurality of touch electrodes, a touch driving circuit applying a touch electrode driving signal to the plurality of touch electrodes, and a touch pen receiving the touch electrode driving signal applied to the plurality of touch electrodes and transmitting a pen output signal, synchronized with the received touch electrode driving signal, to the touch screen.