Method for preventing touch detection and LCD (liquid crystal display) scan from mutual interference

Abstract

The invention provides a method for preventing touch detection and LCD scan from mutual interference. The method is based on an LCD touch screen equipped with a capacitive touch sensor, and comprises the steps that the whole LCD touch screen is divided into at least two areas firstly; then a touch detection timing sequence and an LCD scan timing sequence of the LCD touch screen are set; and a touch detection process and an LCD scan process meet the requirement that either of the touch detection process and the LCD scan process is performed in the same area in the same time interval, so that the touch detection process and the LCD scan process maintain mutually independent operation states in both the time domain and the spatial domain. According to the method, the touch detection process and the LCD scan process are isolated in the time domain and the spatial domain, so that the two processes are prevented from mutual influence and interference.

Description

technical field [0001] The invention relates to a process processing method for effectively shielding interference between two processing processes by coordinating two processing processes, in particular to a process processing method suitable for touch detection and liquid crystal display scanning of a liquid crystal display touch screen provided with a capacitive touch sensor. Background technique [0002] In the prior art, a capacitive touch sensor and a liquid crystal display are integrated to form a liquid crystal display touch screen. Obviously, the liquid crystal display touch screen includes capacitive touch sensor components and liquid crystal display components. The earlier liquid crystal display touch screen is to add capacitive touch sensor on the basis of liquid crystal display, that is, simply install the capacitive touch sensor component on the liquid crystal display component. As the liquid crystal display touch screen has a demand for a thinner design direc...

AI Technical Summary

Problems solved by technology

However, while the prior art liquid crystal display touch screen is developing towards a thinner design direction, since the distance between the key components of the capacitive sensor component and the key components of the liquid crystal display component is getting closer, that is, the driving electrode layer of the capacitive sensor component and the The distance between the sensing electrode layer and the thin film transistor layer of the liquid crystal display component is getting closer and closer, so the touch detection process completed by the capacitive sensor component and the liquid crystal display scanning process completed by the liquid crystal display component are bound to influence and interfere with each other, seriously The performance of capacitive sensor components and liquid crystal display components are greatly reduced

Images