Touch electrode layer and touch display device

Abstract

The invention provides a touch electrode layer and a touch display device. A first electrode and a second electrode of a touch electrode unit are arranged to be of a trunk structure and a branch structure respectively. The first electrode branch is electrically connected with the first electrode main body, the second electrode branch is electrically connected with the second electrode main body, and the first electrode branch and the second electrode branch form a homocentric-squares-shaped limit coupling shape, so that the change rate of a basic mutual capacitance value during finger touch can be increased; and the hollow-square-shaped third electrodes which are not connected with each other are arranged between the adjacent hollow-square-shaped first branch electrode and second branch electrode, so that the basic mutual capacitance value Cm is effectively reduced, and the parasitic capacitance to the ground can be effectively reduced.

Description

technical field [0001] The present invention relates to the display field, in particular to a touch electrode layer and a touch display device. Background technique [0002] At present, flexible folding smartphones usually use flexible active-matrix organic light-emitting diodes (Active-matrixorganic light-emitting diode, AMOLED) with flexible touch screens, in which grid metal On-cell (integrated touch panel and LCD panel) Transformation) touch technology is the current key technology development direction. [0003] The foldable touch display determines that its protective cover cannot use a relatively thick rigid glass cover similar to a traditional mobile phone, and must use a thin transparent flexible film as a protective cover, such as a transparent film. At present, for the floating touch under the thin cover, the thinning of the cover increases the sensing capacity of the finger, the signal △C difference between the floating and non-floating is large, and the multi-f...

AI Technical Summary

Problems solved by technology

[0003] The foldable touch display determines that its protective cover cannot use a relatively thick rigid glass cover similar to traditional mobile phones, and must use a thin transparent flexible film as a protective cover, such as a transparent film

At present, for the floating touch under the thin cover, the thinning of the cover increases the sensing capacity of the finger, the signal △C difference between the floating and non-floating is large, and the multi-finger touch will be coupled with each other, resulting in no reporting or ghost points , when the mobile phone is in the floating state, when multi-finger touches, it is easy to cause the attenuation of the signal volume of the rest of the fingers, so that multi-finger touches cannot be recognized

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