Touch substrate and display device

Abstract

The invention discloses a touch substrate and a display device. The touch substrate comprises a substrate body, a touch driving electrode, a touch sensing electrode and a grounding electrode, whereinthe touch driving electrode, the touch sensing electrode and the grounding electrode are located on the substrate body and insulated from one another. The orthographic projection of the grounding electrode on the substrate base plate and the orthographic projection of the touch driving electrode and the touch sensing electrode on the substrate base plate have non-overlapping areas. A grounding electrode is arranged on a touch substrate. The capacitance formed between the fingers and the ground is increased. Therefore, the capacitance formed by the finger and the ground, the capacitance formedby the finger and the touch driving electrode and the capacitance formed by the finger and the touch sensing electrode are connected in parallel, the total equivalent capacitance is reduced, the variation of the total equivalent capacitance is increased, the detection of a touch chip on a touch point is facilitated, and the detection accuracy of the touch point is improved.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a touch substrate and a display device. Background technique [0002] With the development of display technology, people have higher and higher requirements for display panels, and gradually tend to ultra-thin and flexible and bendable display panels. Among them, the integrated thinning of the module stack structure is conducive to bending, curling and other requirements. [0003] However, as the thickness of the module stack structure becomes thinner, the mutual capacitive touch structure is prone to abnormal detection of touch points under the condition of low ground mass (LGM). Specifically, in the case of weak grounding, the capacitance formed between the finger and the ground is very small, and the current passing capacity of this path is very weak, resulting in a decrease in the mutual capacitance change detected by the touch chip. Capacitance, as well as the...

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Problems solved by technology

[0003] However, as the thickness of the module stack structure becomes thinner, the mutual capacitive touch structure is prone to abnormal touch point detection in the case of low ground mass (LGM)

Specifically, in the case of weak grounding, the capacitance formed between the finger and the ground is very small, and the current passing capacity of this path is very weak, resulting in a decrease in the mutual capacitance change detected by the touch chip. Capacitance, as well as the access of the capacitance formed by the finger and the touch sensing electrode, lead to an increase in the total equivalent capacitance, resulting in the failure of the touch chip to detect normally

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