A pressure-sensitive touch screen and display device

Abstract

The invention discloses a pressure-sensitive touch screen and a display device. Since a plurality of pressure-sensitive touch structures are arranged between an array substrate and an opposite substrate, the pressure-sensitive touch structure includes a first touch electrode, a piezoelectric conversion layer and a second touch electrode. Two touch electrodes. Since the piezoelectric material in the piezoelectric conversion layer will cause relative displacement of positive and negative ions when subjected to pressure, so that the centers of positive and negative charges no longer overlap, so that a voltage will appear between the first touch electrode and the second touch electrode, Therefore, when the pressure-sensitive touch structure is subjected to pressure, the pressure-sensitive detection unit can detect the change of the voltage value between the first touch electrode and the second touch electrode to determine the pressure of the touch position, thereby realizing pressure-sensitive touch. Function. In this way, the pressure-sensitive touch structure is embedded in the existing display panel, and the structural design of the display panel is less changed, and will not be limited by assembly tolerances, and better detection accuracy can be achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pressure-sensitive touch screen and a display device. Background technique [0002] Pressure sensing technology refers to the technology that can detect external force. This technology has been used in industrial control, medical and other fields a long time ago. At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to add an additional mechanism to the backlight part of the LCD panel or the middle frame of the mobile phone. This design requires structural design of the LCD panel or mobile phone. changes, and the probing accuracy of this design is limited due to large assembly tolerances. [0003] Therefore, how to realize pressure sensing with high detection accuracy with little modification of the display panel hardware is an urgent problem to be solved by those skilled in the art. Contents of the inv...

AI Technical Summary

Problems solved by technology

At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to add an additional mechanism to the backlight part of the LCD panel or the middle frame of the mobile phone. This design requires structural design of the LCD panel or mobile phone. changes, and the probing accuracy of this design is limited due to large assembly tolerances

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