公开(公告)号：US20230195249A1

公开(公告)日：2023-06-22

申请号：US17972448

申请日：2022-10-24

Applicant: LG Display Co., Ltd.

Inventor： CheolSe Kim ,  SungChul Kim ,  HoonBae Kim ,  SunYeop Kim ,  Jinseong Kim ,  JuHan Kim ,  Haewon Lee

IPC: G06F3/041 ,  H01L33/62 ,  G06F3/044 ,  H01L25/075

CPC classification number: G06F3/0412 ,  H01L33/62 ,  G06F3/0446 ,  H01L25/0753 ,  G06F3/0416

Abstract: A display device includes a substrate including a plurality of sub pixels; a first touch electrode on the substrate and overlapping at least one subpixel from the plurality of sub pixels; a second touch electrode on the substrate and spaced apart from the first touch electrode and overlapping the at least one sub pixel; an insulating layer covering the first touch electrode and the second touch electrode; a plurality of charging transistors on the insulating layer and electrically connected to one of the first touch electrode and the second touch electrode; a plurality of sensing transistors on the insulating layer and electrically connected to one of the first touch electrode and the second touch electrode; a planarization layer covering the plurality of charging transistors and the plurality of sensing transistors; and a light emitting diode on the planarization layer.

公开(公告)号：US10802636B2

公开(公告)日：2020-10-13

申请号：US16439544

申请日：2019-06-12

Applicant: LG Display Co., Ltd.

Inventor： HoonBae Kim ,  CheolSe Kim ,  SungChul Kim ,  SunYeop Kim ,  Seongkyu Kang ,  SeungMok Shin ,  SungHoon Lee

IPC: G06F3/041 ,  G06F3/047 ,  G06F3/044

Abstract: A touch display device and a method of driving the same. A transition value due to polarity inversion of a data voltage supplied to a predetermined number of adjacent subpixels is reduced by varying an inversion pattern by analysis of image data, so that fluctuations in the voltage of touch electrodes due to the transition of the data voltage are minimized. Accordingly, noise due to fluctuations in the voltage of the touch electrodes is removed so as to improve the performance of touch sensing performed in a period in which display driving is performed.

公开(公告)号：US10423288B2

公开(公告)日：2019-09-24

申请号：US16230984

申请日：2018-12-21

Applicant: LG Display Co., Ltd.

Inventor： JungHan Lee ,  HongChul Kim ,  SungChul Kim ,  JeongSeop Lee ,  SeungEun Pyo

IPC: G06F3/044 ,  G06F3/041

Abstract: Discussed are a display device with an integrated touch screen and a method of operating the same. The display device according to an embodiment includes a display panel including a plurality of pixel electrodes; a touch screen including m number of electrodes which are formed to overlap with the plurality of pixel electrodes, wherein m is a multiple of n, and n is an integer equal to or greater than two, and wherein the m electrodes are divided into n number of electrode groups; a touch driver configured to generate a touch scan signal and to supply the generated touch scan signal to a display driver; and the display driver configured to apply a common voltage or the touch scan signal to one or more of the m electrodes depending on a driving mode of the display device.

公开(公告)号：US10209842B2

公开(公告)日：2019-02-19

申请号：US15875696

申请日：2018-01-19

Applicant: LG Display Co., Ltd.

Inventor： JungHan Lee ,  HongChul Kim ,  SungChul Kim ,  JeongSeop Lee ,  SeungEun Pyo

IPC: G06F3/043 ,  G06F3/044 ,  G06F3/041

Abstract: Discussed are a display device with an integrated touch screen and a method of operating the same. The display device according to an embodiment includes a display panel including a plurality of pixel electrodes; a touch screen including m number of electrodes which are formed to overlap with the plurality of pixel electrodes, wherein m is a multiple of n, and n is an integer equal to or greater than two, and wherein the m electrodes are divided into n number of electrode groups; a touch driver configured to generate a touch scan signal and to supply the generated touch scan signal to a display driver; and the display driver configured to apply a common voltage or the touch scan signal to one or more of the m electrodes depending on a driving mode of the display device.

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：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.

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：US09426882B2

公开(公告)日：2016-08-23

申请号：US13839540

申请日：2013-03-15

Applicant: LG DISPLAY CO., LTD.

Inventor： SungChul Kim ,  Sujin Kwon

IPC: G06F3/041 ,  H05K1/02 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1345

CPC classification number: H05K1/0228 ,  G02F1/13338 ,  G02F1/13452 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  H05K2201/09672

Abstract: Discussed is a Flexible Printed Circuit (FPC). The FPC includes a plurality of touch lines respectively connected to a plurality of touch electrode lines, a first film adhered to the touch lines, a second film overlapping the first film at an upper end surface of the first film and covering the touch lines, and a feedback compensation signal electrode adhered to a lower end surface of the first film, and receiving a feedback compensation signal for removing noise.

Abstract translation: 讨论了柔性印刷电路（FPC）。 FPC包括分别连接到多个触摸电极线的多个触摸线，粘附到触摸线的第一膜，在第一膜的上端表面处覆盖第一膜并覆盖触摸线的第二膜，以及 反馈补偿信号电极，粘附到第一膜的下端面，并且接收用于去除噪声的反馈补偿信号。

公开(公告)号：US20160098126A1

公开(公告)日：2016-04-07

申请号：US14968681

申请日：2015-12-14

Applicant: LG Display Co., Ltd.

Inventor： JungHan Lee ,  HongChul Kim ,  SungChul Kim ,  JeongSeop Lee ,  SeungEun Pyo

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416

Abstract: Discussed are a display device with an integrated touch screen and a method of operating the same. The display device according to an embodiment includes a display panel including a plurality of pixel electrodes; a touch screen including m number of electrodes which are formed to overlap with the plurality of pixel electrodes, wherein m is a multiple of n, and n is an integer equal to or greater than two, and wherein the m electrodes are divided into n number of electrode groups; a touch driver configured to generate a touch scan signal and to supply the generated touch scan signal to a display driver; and the display driver configured to apply a common voltage or the touch scan signal to one or more of the m electrodes depending on a driving mode of the display device.

Abstract translation: 讨论的是具有集成触摸屏的显示装置及其操作方法。 根据实施例的显示装置包括：显示面板，包括多个像素电极; 包括m个与多个像素电极重叠的电极的触摸屏，其中m是n的倍数，n是等于或大于2的整数，并且其中m个电极被分成n个数 的电极组; 触摸驱动器，被配置为产生触摸扫描信号并将产生的触摸扫描信号提供给显示驱动器; 并且所述显示驱动器被配置为根据所述显示装置的驱动模式将公共电压或所述触摸扫描信号施加到所述m个电极中的一个或多个。

公开(公告)号：US20140111466A1

公开(公告)日：2014-04-24

申请号：US13866554

申请日：2013-04-19

Applicant: LG DISPLAY CO., LTD.

Inventor： SungChul Kim ,  Junghan Lee ,  Jeongseop Lee ,  SeungEun Pyo ,  Yangsik Lee

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G09G3/3651 ,  G09G3/3655 ,  G09G2300/0426

Abstract: Discussed are a display device integrated with a touch screen and a method of driving the same, which can save the manufacturing cost and prevent the degradation of display quality caused by touch driving.

Abstract translation: 讨论了与触摸屏集成的显示装置及其驱动方法，这可以节省制造成本并防止由触摸驱动引起的显示质量的劣化。