Title:
DRIVE CHIP, TOUCH DISPLAY DEVICE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/113801
Kind Code:
A1
Abstract:
A drive chip (20), a touch display device (1), and an electronic device (100). The drive chip (20) may be used to further drive a touch display panel (10) to perform touch sensing during any process of driving the touch display panel (10) to perform image display. The touch display panel (10) comprises a plurality of common electrodes (101). The drive chip (20) comprises: a first grounding terminal (201); a modulation circuit (21), connected to the first grounding terminal (201) and used for generating a modulation signal to the first grounding terminal (201); a touch drive circuit (23), selectively connected to the plurality of common electrodes (101) and used for driving the plurality of common electrodes (101) to perform touch sensing; and a common voltage generation circuit (22), selectively connected to the plurality of common electrodes (101) and used for driving the plurality of common electrodes (101) to perform image display. When the modulation circuit (21) outputs the modulation signal to the first grounding terminal (201), the touch drive circuit (23) is used to drive a same common electrode (101) to simultaneously perform image display and touch sensing.
Inventors:
LIN FENG (CN)
Application Number:
PCT/CN2017/115733
Publication Date:
June 20, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
SHENZHEN SHENWEICHUANGXIN TECH CO LTD (CN)
International Classes:
G06F3/041
Foreign References:
| CN105353919A | 2016-02-24 | |||
| CN104995589A | 2015-10-21 | |||
| CN105355186A | 2016-02-24 | |||
| CN107092388A | 2017-08-25 | |||
| US20170102825A1 | 2017-04-13 | |||
| US20140253536A1 | 2014-09-11 |
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