Capacitive touching structure, embedded touch screen, display device and scanning method of display device

Abstract

The invention relates to the technical field of touching, in particular to a capacitive touching structure, an embedded touch screen, a display device and a scanning method of the display device. The number of wires in the self-capacitance touching structure is decreased, and the probability of occurrence of the problems that the narrow frame design is not facilitated and a touch blind area is large is decreased to a certain degree. The capacitive touching structure comprises a plurality of self-capacitance electrodes which are arranged on the same layer, area electrodes, first wires, second wires and touch detection chips, wherein the self-capacitance electrodes are located in at least two areas contained by the surface of a film where the self-capacitance electrodes are located respectively; the area electrodes are located in the areas respectively, and the area electrodes and the self-capacitance electrodes are located on the same layer; the first wires are connected with the self-capacitance electrodes, and each first wire is connected with at least two self-capacitance electrodes which are located in different areas respectively; the second wires are connected with the area electrodes, and the area electrodes located in the areas are electrically connected with the different second wires; the touch detection chips are connected with the first wires and the second wires.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to a capacitive touch structure, an embedded touch screen, a display device and a scanning 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. At present, the touch structures included in the touch screen can be divided into: a mutual capacitance touch structure and a self-capacitance touch structure. As for the self-capacitance touch structure, due to its high accuracy of touch sensing and relatively high signal-to-noise ratio, it is favored by major panel manufacturers. [0003] At present, the self-capacitance touch structure uses the principle of self-capacitance to detect the touch position of the finger. Specifically, a plurality of self-capacitance electrodes arranged on the same layer and insulated from each other are set in the touch structure. The...

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Problems solved by technology

[0005] And, in concrete implementation, the quantity of self-capacitance electrode can be very much, be 5mm*5mm as example with the occupied area of ​​each self-capacitance electrode, 5 inches liquid crystal screen just needs 264 self-capacitance electrodes, if each If the self-capacitance electrode design is smaller, there will be more self-capacitance electrodes, so that the number of wires connected to the self-capacitance electrodes is very large, which will cause some problems. There will also be a large number of peripheral traces connected to the wires in one-to-one correspondence, which is not conducive to the narrow frame design; or, when the wires and self-capacitance electrodes are arranged on the same layer, the large number of wires will cause a relatively large touch blind area

[0006] To sum up, at present, the number of self-capacitance electrodes in the self-capacitance touch structure is very large, so that the number of wires connected to the self-capacitance electrodes is also very large, which will cause problems such as unfavorable narrow frame design and relatively large touch blind area.

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