Convex circle

For convex part of membrane switch’s panels, “convex circle” may be used for production, hand-feeling of keypads is comfortable, beautiful appearance, and can prolong the service life of the keys.A simple example is introduced as follows:

Applicated Products: a,on the keys’ back directly printed silver pulp, can be directly put on the PCB containing buttons.

B, combined domes, key force better stability, longer service life.

Advantage: product’s appearance is beautiful,hand-feeling of keys is good, long service life.

Application: widely used in household appliances, electronic communication, industrial automation equipment and other fields.

In addition, frame convex and flat convex can also be used for part of membrane keypads’ pressing convex

(source:http://www.menhow.com/convex-circle/)