公开(公告)号：US11755142B2

公开(公告)日：2023-09-12

申请号：US17461463

申请日：2021-08-30

申请人： LG DISPLAY CO., LTD.

发明人： MyungHo Shin

IPC分类号： G06F3/041 ,  G02F1/1333 ,  G06F3/044

CPC分类号： G06F3/04166 ,  G02F1/13338 ,  G06F3/044 ,  G06F3/0412 ,  G06F3/0418

摘要： A touch sensing circuit can include a plurality of touch electrodes; and a touch circuit configured to supply at least one touch driving signal to at least one of the plurality of touch electrodes, in which the at least one touch driving signal includes a first touch driving signal and a second touch driving signal, and the first touch driving signal has a first frequency in a first touch period included in a first frame, and the second touch driving signal has a second frequency different from the first frequency in a second touch period included in a second frame subsequent to the first frame.

公开(公告)号：US12099682B2

公开(公告)日：2024-09-24

申请号：US18229546

申请日：2023-08-02

申请人： LG DISPLAY CO., LTD.

发明人： MyungHo Shin

IPC分类号： G06F3/041 ,  G02F1/1333 ,  G06F3/044

CPC分类号： G06F3/04166 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044

摘要： A display device can include a display panel including a gate line, a data line, and a pixel connected to the gate line and the data line; a plurality of touch electrodes; and a touch sensing circuit configured to supply a first touch driving signal to a first touch electrode in a first touch time section of a first frame, the first frame including a first display time section and the first touch time section, and supply a second touch driving signal to the first touch electrode in a second touch time section of a second frame, the second frame including a second display time section and the second touch time section. Also, a frequency of the first touch driving signal supplied to the first touch electrode is different from a frequency of the second touch driving signal applied to the first touch electrode.

公开(公告)号：US11126302B2

公开(公告)日：2021-09-21

申请号：US16780641

申请日：2020-02-03

申请人： LG DISPLAY CO., LTD.

发明人： MyungHo Shin

IPC分类号： G06F3/041 ,  G02F1/1333 ,  G06F3/044

摘要： A touch device can include a plurality of touch electrodes including a first touch electrode and a second touch electrode; and a touch sensing circuit configured to supply a touch driving signal to at least one of the plurality of touch electrodes in a touch period, the touch period including a first touch period and a second touch period, in which the touch driving signal includes a first touch driving signal or a second touch driving signal; and the touch sensing circuit can supply the first touch driving signal having a first frequency to the first touch electrode for sensing a touch in the first touch period, supply a first load-free driving signal having the first frequency to the second touch electrode in the first touch period, supply the second touch driving signal having a second frequency to the second touch electrode for sensing a touch in the second touch period, and supply a second load-free driving signal having the second frequency to the first touch electrode in the second touch period.

公开(公告)号：US10572055B2

公开(公告)日：2020-02-25

申请号：US15387222

申请日：2016-12-21

申请人： LG DISPLAY CO., LTD.

发明人： MyungHo Shin

IPC分类号： G06F3/041 ,  G02F1/1333 ,  G06F3/044

摘要： Discussed are a driving method, a touch sensing circuit, a display panel, and a touch display device in which touch driving of driving touch electrodes using a multi-frequency driving method while modulating a frequency of a touch driving signal of a pulse type. The touch driving signal drives at least one touch electrode and senses a touch or a touch position in touch sections for a touch mode. Each of the touch sections for the touch mode includes k or more unit touch sections. The frequency of the touch driving signal output in at least one unit touch section is different from the frequency of the touch driving signal output in another unit touch section. Accordingly, it is possible to enable touch sensing and to suppress an EMI phenomenon which may occur due to the touch driving signal.

公开(公告)号：US11079876B2

公开(公告)日：2021-08-03

申请号：US17115558

申请日：2020-12-08

申请人： LG Display Co., Ltd.

发明人： Jaehun Jun ,  HyeongWon Kang ,  MyungHo Shin

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

摘要： Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch driving method, and more specifically, to a touch display device, a touch driving circuit, and a touch driving method for enabling a signal-to-noise ratio (SNR) and sensitivity of touch sensing to be improved by implementing a code division sensing effect for the self-capacitance sensing scheme.

公开(公告)号：US10042470B2

公开(公告)日：2018-08-07

申请号：US15393125

申请日：2016-12-28

申请人： LG Display Co., Ltd.

发明人： MyungHo Shin ,  SungUk Byun ,  YongWoo Choi ,  MinWoo Hwang ,  KiYong Kim ,  Youngho Kwon ,  Kyungjin Jang ,  JaeKyu Park

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

摘要： A touch sensing method, a touch sensing circuit, and a touch display device perform multifrequency touch driving by varying the frequencies of touch driving signals when sensing a touch or a touched position by outputting pulse-type touch driving by which one or more touch electrodes among a number of touch electrodes disposed on a display panel are driven sequentially. Undesired parasitic capacitance that would otherwise be caused by touch driving signals is prevented from occurring, and EMI influence is reduced.