Touch electrode layer and touch display device

A technology of touch electrodes and electrodes, which is applied in the direction of electrical digital data processing, instruments, and the input/output process of data processing, etc. It can solve the problems of finger signal attenuation, protection cover cannot be used, and no point reporting, etc., to achieve reduction Effect of small parasitic capacitance, reduction of basic mutual capacitance value Cm, and improvement of change rate
CN110737360AActive Publication Date: 2020-01-31WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
Publication Date
2020-01-31

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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.
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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...

Claims

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