Embedded type touch screen and display device

Abstract

The invention discloses an embedded type touch screen and a display device. According to the embedded type touch screen and the display device, multiple self-capacitance electrodes which are arranged on the same layer and insulated from one another are arranged in the touch screen by means of the self-capacitance principle, and a touch control detection chip can judge the touch position by detecting the capacitance variation of each self-capacitance electrode; due to the fact that body capacitance acts on all the self-capacitance, touch variation caused when the human body touches the screen is larger compared with the technical scheme that body capacitance only acts on projective capacitance in mutual capacitance, and therefore the signal to noise ratio of touch control can be effectively improved, so that the accuracy of touch induction is improved; furthermore, compared with the prior art that self-capacitance electrodes are arranged between an upper substrate and a flat layer, composition needs to be conducted on the flat layer to enable breakover connecting points arranged on the same layer with the self-capacitance electrodes to be exposed and the breakover connecting points are electrically connected with a connecting terminal of a touch control detection chip located on a lower substrate through border adhesives, the embedded type touch screen and the display device have the advantages that the self-capacitance electrodes are arranged between the flat layer of and a partition pad of the upper substrate, and therefore composition of the flat layer is omitted and manufacturing techniques are simplified.

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 throughout people's lives. At present, touch screens can be divided into three types according to their structure: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel. 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 touch-enabled LCD screen. The plug-in touch screen has high production costs and low light transmittance. Low, thick modules and other shortcomings. The embedded touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module and greatly reduce the production cost of the touch ...

AI Technical Summary

Problems solved by technology

[0005] In the structural design of the above-mentioned capacitive embedded touch screen, the human body capacitance will only couple with the projected capacitance in the mutual capacitance, and the facing capacitance formed by the touch driving electrode and the touch sensing electrode on the opposite side will make the signal of the touch screen Reduced noise ratio affects the accuracy of touch sensing in in-cell touchscreens

Moreover, it is necessary to add two new film layers on the existing TFT array substrate, resulting in the need to add a new process when making the TFT array substrate, which increases the production cost and is not conducive to improving production efficiency

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