Touch screen

Abstract

The invention discloses a touch screen. The touch screen comprises a substrate, a plurality of touch electrodes and electrode leads which are electrically connected with the touch electrodes correspondingly; the substrate comprises a visible area and a frame area which surrounds the visible area; the touch electrodes and the electrode leads are formed in the surface of the substrate; the electrode leads comprise lead bodies, connecting blocks which are in lap joint with the touch electrodes and offset portions which connect the lead bodies and the connecting blocks; the touch electrodes comprise touch electrode bodies which are arranged at the visible area of the substrate and terminals at the frame area; the connecting blocks comprise lap joint portions and extension portions; the extension portions are arranged on the lap joint sides which are close to the lead bodies and deviated from the touch electrodes; the extension portions play roles in extending the touch electrodes and accordingly the length of the touch electrodes is reduced appropriately, the touch sensitivity of the touch screen visible area is reduced, meanwhile the offset space is saved, and a touch screen with a narrow frame is easy to prepare.

Description

technical field [0001] The invention relates to touch panel technology, in particular to a touch screen. Background technique [0002] figure 1 It is a structural schematic diagram of a touch screen in the prior art, see figure 1 , in the prior art, the touch screen structure 100 includes a substrate 110 , touch electrodes 120 formed on the surface of the substrate, and electrode leads 130 electrically connected to these touch electrodes. The substrate 110 is divided into a central visible area 111 and a frame area 112 . Usually, in order to cooperate with the touch screen to provide visual touch operations, the touch electrodes 120 are made of transparent conductive materials such as Indium-Tin Oxide (ITO for short), and are arranged in the visible area of ​​the substrate. The electrode leads 130 are used to conduct touch signals generated by the touch electrodes. In order to avoid signal attenuation and improve touch sensitivity, the electrode leads are usually made of ...

AI Technical Summary

Problems solved by technology

Considering that there is a certain operational tolerance during silk screen printing, in order to avoid short circuit between the lead body 132 of the electrode lead and the touch electrode 120, it is usually necessary to place a gap between the edge of the lead end 122 of the touch electrode 120 and the lead body 132 of the electrode lead 130 during design. A certain distance w is reserved between them, which further reduces the width of the frame area 112 that can actually be used to arrange the lead body 132, resulting in increased wiring process difficulty and cost increase, or having to increase the width of the frame area

It can be seen that in the prior art, it is very difficult to realize narrow borders

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