A display substrate, touch screen and display device

Abstract

The invention discloses a display substrate, a touch screen and a display device. On the side of the display substrate facing the opposite substrate, there are a plurality of pressure-sensitive units arranged in an array; the input poles of each pressure-sensitive unit are connected to corresponding signal input lines, The output poles are connected to corresponding signal output lines; each signal input line and each signal output line are arranged crosswise. The material of each pressure-sensitive unit is a metal oxide piezoelectric material, and when the position of the pressure-sensitive unit is pressed, the pressure-sensitive unit will generate an electromotive force. Therefore, during the display time period, after the electrical signals are loaded sequentially through the signal input lines, the signal output lines read the output signal changes of the connected pressure-sensitive units to realize the pressure-sensing function. Moreover, in the embodiment of the present invention, the pressure-sensitive unit is integrated into the touch screen to realize the pressure-sensing function, the structural design of the display device is changed little, and it will not be limited by the assembly tolerance, which is beneficial to achieve better detection accuracy, and It is beneficial to save the production cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a touch screen and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread in people's lives. Currently, touch panels can be classified into: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel according to their composition and structure. Among them, the plug-in touch screen is produced separately from the touch module and the display screen, and then bonded together to form a display screen with touch function. [0003] Most of the current touch screens can only detect two-dimensional coordinates, that is, they can only detect the touch position of the finger on the surface of the touch screen in the xy direction, and cannot detect the pressure in the z direction perpendicular to the surface of the touch screen when the finger presse...

AI Technical Summary

Problems solved by technology

[0003] Most of the current touch screens can only detect two-dimensional coordinates, that is, they can only detect the touch position of the finger in the xy direction on the surface of the touch screen, and cannot detect the pressure in the z direction perpendicular to the surface of the touch screen when the finger presses the screen.

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