Embedded type touch screen and display device

Abstract

The invention discloses an embedded type touch screen and a display device. As each self-capacitance electrode is provided with a plurality of hollow areas, the area of each self-capacitance electrode can be reduced, and natural capacitance of each self-capacitance electrode is reduced; if it is assumed that the finger capacitance is unchanged in the touching process, the capacitance on each self-capacitance electrode, namely, the sum of the natural capacitance and the finger capacitance is decreased relatively, and therefore RC delay of a feedback signal on each self-capacitance electrode can be reduced; moreover, the change amount of the capacitance on each self-capacitance electrode before and after touching is carried out is increased relative to the natural capacitance of each self-capacitance electrode, relatively, the change amount of each feedback signal caused by the finger is increased, and therefore the touch sensitivity of the touch screen is improved; in addition, as the hollow areas are arranged in the self-capacitance electrodes to reduce the area of the self-capacitance electrodes, a touch blind area between every two adjacent self-capacitance electrodes and the number of the self-capacitance electrodes do not need to be increased, and it is ensured that on the basis of the narrow-border design, the touch sensitivity of the touch screen is improved.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to an embedded touch screen and a display device. 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, touch screens can be divided into three types according to their composition structure: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel; ) type touch screen can be divided into: mutual capacitance touch screen and self capacitance touch screen. As for the self-capacitance touch screen, 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 screen uses the principle of self-capacitance to detect the touch position of the finger. Specifically, a plurality of self-capacitance electrodes set on the same layer and insulated ...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned existing self-capacitance touch screen, if the number of self-capacitance electrodes is not changed, but the area of ​​the self-capacitance electrodes is only reduced, the gap between the self-capacitance electrodes will increase, thereby increasing the touch blind area; if If the area of ​​the self-capacitance elect

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