A capacitive touch module, a capacitive embedded touch screen, and a display device

Abstract

The present invention discloses a capacitive touch module, a capacitive in-cell touch screen panel and a display device, in which an integrally connected common electrode layer in an array substrate is split to form touch sensing electrodes and touch driving electrodes which are insulated from each other; and the touch driving electrodes and the touch sensing electrodes are subjected to time-sharing drive to achieve the touch function and the display function. Moreover, each touch sensing electrode includes a plurality of touch sensing sub-electrodes; each touch driving electrode includes a plurality of touch driving sub-electrodes; and opposing sides of adjacent touch sensing sub-electrodes and touch driving sub-electrodes are broken lines. Therefore, the opposing area between the adjacent touch driving electrodes and the adjacent touch sensing electrodes can be increased, and hence the mutual capacitance between the touch driving electrodes and the touch sensing electrodes within the unit area can be increased, and consequently the sensing sensitivity of the touch screen in the touch-control process can be improved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a capacitive touch module, a capacitive embedded touch screen and a display device. Background technique [0002] With the rapid development of display technology, touch screens (TouchScreenPanel) have gradually spread throughout people's lives. At present, the touch screen can be divided into three types according to the structure: an add-on touch screen (AddonModeTouchPanel), a surface-covering touch screen (OnCellTouchPanel), and an in-cell touch screen (InCellTouchPanel). Among them, the plug-in touch screen is produced separately from the touch screen and Liquid Crystal Display (LCD), and then bonded together to form a liquid crystal display with touch function. The plug-in touch screen has high production costs, low light transmittance, The module is thicker and other shortcomings. The embedded touch screen embeds the touch electrodes of the touch screen inside the ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned capacitive embedded touch screen that multiplexes the common electrode layer generally adopts a common square graphic design when dividing the common electrode layer, that is, as figure 1 As shown, the touch driving electrode Tx and the touch sensing electrode Rx are in a square shape, and the mutual capacitance generated between the touch sensing electrode Rx and the touch driving electrode Tx is small, so that the electric field of the human body has little effect on the mutual capacitance change. The impact is small. When the human body touches the touch screen, the power signal coupled by the touch sensing electrode changes little, making the sensitivity of the touch screen low.

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