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1. (US20190064955) Touch display device and driving method thereof

Office : United States of America
Application Number: 15516072 Application Date: 05.09.2016
Publication Number: 20190064955 Publication Date: 28.02.2019
Grant Number: 10318081 Grant Date: 11.06.2019
Publication Kind : B2
Prior PCT appl.: Application Number:PCTCN2016098042 ; Publication Number: Click to see the data
IPC:
G06F 3/044
G06F 3/041
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01
Input arrangements or combined input and output arrangements for interaction between user and computer
03
Arrangements for converting the position or the displacement of a member into a coded form
041
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
044
by capacitive means
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01
Input arrangements or combined input and output arrangements for interaction between user and computer
03
Arrangements for converting the position or the displacement of a member into a coded form
041
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
CPC:
G06F 3/0412
G06F 3/044
Applicants: Boe Technology Group Co., Ltd.
Beijing Boe Optoelectronics Technology Co., Ltd.
Inventors: Haisheng Wang
Xue Dong
Hailin Xue
Xiaochuan Chen
Shengji Wang
Xiaoliang Ding
Yingming Liu
Weijie Zhao
Changfeng Li
Wei Liu
Pengpeng Wang
Rui Xu
Agents: Calfee, Halter & Griswold LLP
Priority Data: 2015 1 0886172 04.12.2015 CN
Title: (EN) Touch display device and driving method thereof
Abstract: front page image
(EN)

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.


Also published as:
WO/2017/092460