Touch panel

Abstract

The present invention relates to a touch screen, which includes: a first input layer and a second input layer arranged in layers, and the second input layer includes first to fourth vertices distributed counterclockwise, a There are mesh circuits arranged in rows and columns and a switch control circuit. The mesh circuit further includes two input ends, and the switch control circuit is connected between the two input ends and the four vertices. When the first input layer is touched, the two input terminals are respectively loaded with different potentials. Under the control of the switch control circuit, the potentials of the first and fourth vertices are equal during the first half of the touch process, and the second , the potentials of the third vertices are equal, and the potentials of the first and second vertices are not equal; in the second half of the touch process, the potentials of the first and second vertices are equal, and the potentials of the third and fourth vertices are equal The potentials of are equal, and the potentials of the first and third vertices are not equal.

Description

【Technical Field】 [0001] The invention relates to a touch screen. 【Background technique】 [0002] Liquid crystal display devices have the advantages of lightness, thinness, and low power consumption, and have been widely used in modern information equipment such as TVs, notebooks, computers, mobile phones, and personal digital assistants. In order to reduce the size of the personal digital assistant, the liquid crystal display device used for the personal digital assistant is usually combined with a touch screen to omit a key panel or function buttons. Generally speaking, the touch screen generates electrical signals through touch to control the image display of the liquid crystal display device and realize function control. [0003] See figure 1 , Is a schematic diagram of a prior art touch screen. The touch screen 1 includes: a first input layer 11, which includes an output terminal 111; a second input layer 12, which is stacked with the first input layer 11, and includes firs...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of many touch screen wirings and complicated driving methods in the prior art, it is necessary to provide a touch screen with less wiring and simple driving methods.

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