Touch screen, display device and driving method of display device

Abstract

The invention discloses a touch screen, a display device and a driving method of the display device. A transparent conducting layer is added on a structure of the touch screen and arranged on one side of an array substrate deviated from an apposition substrate, the transparent conducting layer serves as a shielding layer, touch detection signals as same as touch detection electrodes are loaded in touch time period, so that a capacitor structure is formed between the shielding layer and a metal layer below the screen, capacitance value of the capacitor structure between the shielding layer and the metal layer is affected by variation the distance between the shielding layer and the metal layer below the screen caused by screen deformation brought when a finger presses the touch screen, so that the touch detection signals loaded by the shielding layer change, variation of capacitance value of the touch detection electrodes cannot be interfered, and touch sensing accuracy can be effectively improved.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch screen, a display device and a driving method thereof. 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 InCell Touch Panel according to their structure. Among them, the plug-in touch screen is produced separately from the touch screen and Liquid Crystal Display (LCD), and then bonded together to form a touch-enabled LCD screen. The plug-in touch screen has high production costs and low light transmittance. , The module is thicker and other shortcomings. In the touch screen, the touch electrodes of the touch screen are embedded in the liquid crystal display, which can reduce the overall thickness of the module and greatly reduce the production cost of the ...

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, the touch screen will be deformed due to the pressure of the finger when it is used, causing the distance between the self-capacitance electrode and the metal layer such as the middle frame of the mobile phone under the touch screen to become smaller, resulting in the self-capacitance electrode and the metal layer. The capacitance value becomes larger between

The change of the capacitance value is related to the pressure of the finger, so it is not a fixed value. The uncertain change of the capacitance value is equivalent to noise interference for touch detection, which will affect the accuracy of touch sensing.

Images