Capacitive touch screen and manufacturing method thereof

Abstract

The invention relates to a capacitive touch screen which comprises a panel substrate and shading layers. The shading layers are printed around the panel substrate and form frames outside a touch screen window. The capacitive touch screen further comprises first transparent conducting layers covering the panel substrate and shading ink, transparent insulating layers covering the first transparent conducting layers, and second transparent conducting layers covering the transparent insulating layers. Compared with the prior art, as the touch screen comprises the two transparent conducting layers, when a circuit is designed, circuit patterns on the two transparent conducting layers are designed to be mutually staggered in a perpendicular mode, and namely, the two groups of the circuit patterns are mutually separated. Compared with a touch screen adopting one transparent conducting layer, the circuit design of each conducting layer is simplified, and therefore the process of yellow light coating is eliminated, and the production requirement for the oversized touch screen is met. In addition, a conducting circuit on each conducting layer is arranged behind the frames of the touch screen in a bridging mode, and therefore the influence on the appearance of the whole touch screen is avoided.

Description

technical field [0001] The invention relates to a touch screen, in particular to a capacitive touch screen. Background technique [0002] The touch screen can be operated by finger touch for man-machine dialogue. It is generally used in touch screen mobile phones, touch screen PDAs, tablet computers, car navigators and other industrial control equipment. The user can directly operate the device through the touch screen, which saves the operation buttons and enhances the interaction between man and machine. [0003] With the development of science and technology, a capacitive touch screen appears, which has become a new touch device for electronic devices such as mobile phones and notebooks. Compared with the traditional touch screen, the capacitive touch screen has multi-touch technology, and its positioning is more accurate and reliable. [0004] At present, capacitive touch screens generally only have one layer of ITO conductive layer, and the conductive lines are genera...

AI Technical Summary

Problems solved by technology

[0004] At present, capacitive touch screens generally only have one layer of ITO conductive layer, and the conductive lines are generally bridged in the window area of ​​the touch screen, which will affect the appearance of the touch screen.

And because the circuit is bridged in the window area of ​​the touch screen, in order to ensure the normal operation of the touch screen, the whole screen needs to be treated with yellow light coating, that is, the yellow light process, so that the manufacturing cost of the entire touch screen is very high. High, it is difficult to realize the production of super large touch screen

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