Calfee, Halter & Griswold LLP
Touch display device and driving method thereof
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.
BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. BOE TECHNOLOGY GROUP CO., LTD.
G G
G06F G06F
inventional inventional
Wei Rui Hailin Xue Changfeng Xiaoliang Yingming Shengji Weijie Xiaochuan Pengpeng Haisheng
Liu Xu Xue Dong Li Ding Liu Wang Zhao Chen Wang Wang