Array substrate and touch display device

Abstract

The invention relates to the field of the display technology and discloses a display device. The display device comprises an array composed of a plurality of driving electrodes and a plurality of sensing electrodes, and the driving electrodes and the sensing electrodes are of the same structure, the structure comprises a T-shaped electrode main body and a plurality of symmetrically-distributed electrode branch bodies connecting the electrode main body to form a first sub electrode and a second sub electrode which are symmetric to each other; every sensing electrode comprises a first sensing electrode and a second sensing electrode, which are arranged between every two of the corresponding three neighboring driving electrode respectively; the electrode branch bodies of every driving electrode are arranged inside the gap of the neighboring electrode branch bodies of the neighboring sensing electrode. The invention also discloses a touch display device. According to the display device, by means of the graphic structure of a sensing layer and the staggered arrangement mode of the driving electrodes and the sensing electrodes, the sensing area between the driving electrodes and the sensing electrodes can be enlarged, and better capacitive coupling among the electrodes can be obtained.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an array substrate and a touch display device. Background technique [0002] Touch screen is the latest information input device at present. It can realize human-computer interaction simply, conveniently and naturally. It is a brand-new multimedia interactive device. Capacitive touch screen has the advantages of sensitive touch response and multi-touch support. The single-layer ON-CELL capacitive touch screen has the advantages of thinness, low production cost, and integration of touch and display. Among them, the single-layer ON-CELL capacitive touch screen that supports frame stickers is widely favored by end customers because of its advantages such as cheap cover materials, simple process, and easy rework. [0003] Compared with the surface mount (cover lens fully bonded), in the frame mount structure, since there is an air layer between the cover lens and the touch ...

AI Technical Summary

Problems solved by technology

[0003] Compared with the surface mount (cover lens fully bonded), in the frame mount structure, since there is an air layer between the cover lens and the touch sensor, the dielectric constant of the air is significantly smaller than that of other materials (such as LOCA liquid optical glue), weakening The electric field induction (that is, capacitive coupling) between the driving electrode and the sensing electrode is eliminated, resulting in a significant decrease in the touch signal and sacrificing the original touch performance

In order to enhance the touch signal, the existing method is: simply increase the two-dimensional size (length and width) of a single driving electrode and sensing electrode, and correspondingly increase the center-to-center distance between adjacent electrodes, which leads to consequences Yes: The minimum resolution distance between the two fingers is significantly increased, and the linearity is significantly worse, which greatly affects the overall touch performance

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