公开(公告)号：US11243629B2

公开(公告)日：2022-02-08

申请号：US17018890

申请日：2020-09-11

Applicant: LG Display Co., Ltd.

Inventor： Yangsik Lee ,  HwiDeuk Lee ,  YongChan Park ,  Sungsu Han

IPC: G06F3/041 ,  H01L27/32 ,  G06F3/044

Abstract: Embodiments of the disclosure relate to touch display devices. A shielding pattern to which a constant voltage is applied is placed between the touch routing line and the encapsulation part without overlapping the touch routing line. Thus, it is possible to block the noise due to the signal line positioned under the encapsulation part by the electric field generated by the shielding pattern. Further, the metal disposed on the same layer as the shielding pattern in the planarized area of the encapsulation part may be used as a touch routing line, reducing the resistance and width of the touch routing line and hence the planarized area of the encapsulation part. Thus, it is possible to provide a touch display device for which an increase in the non-active area has been reduced and display noise has been reduced upon touch sensing.

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：US10444913B2

公开(公告)日：2019-10-15

申请号：US15480301

申请日：2017-04-05

Applicant: LG Display Co., Ltd.

Inventor： Sungsu Han ,  YongChan Park ,  SungChul Kim ,  Jinseong Kim

IPC: G06F3/044 ,  G09G3/20 ,  G06F3/041

Abstract: The present embodiments relate to a driving circuit and a touch display apparatus for sensing a user's touch position and touch force with respect to a display panel, and further relate to a driving method thereof. The touch display apparatus may include a plurality of first electrodes that are configured to be embedded in a display panel, and a second electrode that is configured to be positioned outside the display panel. The touch display apparatus may read a force sensing signal from the second electrode through a signal detecting unit that is electrically connected to the second electrode. Therefore, it is possible to sense a touch force without separating a force sensing signal from a signal received from the first electrode, and to sense a user's touch force through the driving of the second electrode regardless of the driving mode of the first electrode.

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.

公开(公告)号：US10001886B2

公开(公告)日：2018-06-19

申请号：US14457813

申请日：2014-08-12

Applicant: LG Display Co., Ltd.

Inventor： Sungsu Han ,  Suhyuk Jang ,  Hoonbae Kim ,  Semin Kung

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/0297 ,  G09G2370/10 ,  G09G2370/14

Abstract: A display device and a method for driving the same are discussed. The display device, in which pixels of a display panel are charged to a data voltage during a pixel driving period and touch sensors embedded in the display panel are driven during a touch sensor driving period, includes a timing controller which transmits a preamble signal, control data, and data of an input image to a source driver integrated circuit (IC) during the pixel driving period and transmits the preamble signal to the source driver IC during the touch sensor driving period.