Invention Grant
- Patent Title: Touch display device and driving method thereof
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Application No.: US15516072Application Date: 2016-09-05
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Publication No.: US10318081B2Publication Date: 2019-06-11
- Inventor: Haisheng Wang , Xue Dong , Hailin Xue , Xiaochuan Chen , Shengji Wang , Xiaoliang Ding , Yingming Liu , Weijie Zhao , Changfeng Li , Wei Liu , Pengpeng Wang , Rui Xu
- Applicant: Boe Technology Group Co., Ltd. , Beijing Boe Optoelectronics Technology Co., Ltd.
- Applicant Address: CN Beijing CN Beijing
- Assignee: BOE TECHNOLOGY GROUP CO., LTD.,BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee: BOE TECHNOLOGY GROUP CO., LTD.,BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee Address: CN Beijing CN Beijing
- Agency: Calfee, Halter & Griswold LLP
- Priority: CN201510886172 20151204
- International Application: PCT/CN2016/098042 WO 20160905
- International Announcement: WO2017/092460 WO 20170608
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A touch display device and a driving method are disclosed. The touch display device includes a liquid crystal display panel having a plurality of self-capacitive electrodes and an electroluminescent display panel arranged under the liquid crystal display panel. The self-capacitive electrodes in the liquid crystal display panel and a cathode in the electroluminescent display panel constitute capacitive structures. The driving method includes in a touch detection time period, applying a first touch detection signal to the self-capacitive electrodes and the cathode simultaneously, and detecting change of a capacitance value of a self capacitance corresponding to each self-capacitive electrode so as to determine a touch position; and in a pressure detection time period, applying a second touch detection signal to the self-capacitive electrodes or the cathode, and detecting changes of capacitance values of capacitances formed between the self-capacitive electrodes and the cathode to determine a pressure at the touch position.
Public/Granted literature
- US20190064955A1 TOUCH DISPLAY DEVICE AND DRIVING METHOD THEREOF Public/Granted day:2019-02-28
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