Touch screen and touch display device

Abstract

A touchscreen and a touch display apparatus are disclosed. The touchscreen includes a transparent substrate, the transparent substrate includes a first surface and a second surface, a transparent first conductive layer is disposed on the first surface, a transparent second conductive layer is disposed on the second surface, the first conductive layer includes a plurality of first touch induction electrodes and first pressure induction electrodes that extend in a first direction and that are alternately arranged in a second direction, the second conductive layer includes a plurality of second touch induction electrodes and second pressure induction electrodes that extend in the second direction and that are alternately arranged in the first direction, the plurality of first touch induction electrodes and the plurality of second touch induction electrodes are configured to detect a position of a touch operation on the touchscreen, and the plurality of first pressure induction electrodes and the plurality of second pressure induction electrodes are configured to detect pressure of the touch operation on the touchscreen. The touchscreen can detect touch pressure without increasing thickness of the touchscreen.

Description

technical field [0001] The invention relates to the technical field of touch control, in particular to a touch screen and a touch display device. Background technique [0002] The pressure detection technology can add a touch pressure value beyond the touch position of the traditional capacitive touch screen, that is, the touch detection result changes from the original two-dimensional coordinates (x, y) to the three-dimensional coordinates (x, y, z) to achieve a three-dimensional touch control experience . Wherein, x and y represent the abscissa and ordinate of the touch position respectively, and z represents the magnitude of the touch pressure. By introducing the pressure detection function in the touch screen, the expression range and efficiency of the touch input can be improved. At present, there is a scheme of using the capacitive touch screen to detect the size of the finger contact area to judge the touch pressure, but this scheme may have large errors for fingers...

AI Technical Summary

Problems solved by technology

At present, there is a scheme that uses the capacitive touch screen to detect the size of the finger contact area to judge the touch pressure, but this scheme may have large errors for different users' fingers

At the same time, there is also a solution to realize touch pressure detection by adding an additional pressure sensor, but because the sensor is not transparent, it cannot be arranged above the display screen, but can only be arranged around the display screen, resulting in limited installation methods for the glass cover. And affect the waterproof design; or the pressure sensor is arranged behind the display screen through the substrate, the deformation of the glass cover under the pressure needs to compress the deformation of the display screen to be transmitted to the pressure sensor behind the screen, resulting in low pressure detection sensitivity and affecting the reliability of the screen. In addition, the setting of the pressure sensor needs to increase the thickness of the touch screen, and there are problems such as difficult assembly and high cost

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