Convex touch of surface plate in the structure of tactile membrane switches has 2 types.
For the first type, when the design is not appropriate, it is easy to have two sections, but the surface plate is damaged, and the electrical performance also exists.
For the second type, there is no two sections, and there are few structural layers, which is more economical. If the tactile surface plate is damaged, the electrical performance will not exist. In this case, the rubber membrane switches are tactile.
About metal shrapnel type, it is the most basic and commonly used structure. The shrapnel not only plays the role of touch, but also plays the role of wiring.
