2. Film convex type: It has good touch, but its service life is relatively short;

3. Convex frame type without touch: beautiful appearance, strong three-dimensional sense, but no touch;

4. Convex-frame touch-sensitive type: beautiful appearance, strong three-dimensional sense, and touch;

5. The panel touches the touch type: if the design is improper, it is easy to have two phenomena, but the panel is damaged, and the electrical performance also exists;

6, metal shrapnel type: good feel, the shrapnel plays both a tactile and an on-line role; the metal shrapnel is mainly used in the membrane switch of the rigid board, which fully utilizes the three characteristics of the shrapnel's conduction, rebound and feel. The application of shrapnel in flexible membrane switches is mainly to provide tactile feedback (ie, feel), which is generally not used. The disadvantage is that the gap between the travel of the metal shrapnel and the travel between the switch contacts causes the shrapnel and the switch to fail to synchronize. In other words, when the shrapnel is activated, the switch contacts may not be activated at the same time. Moreover, in the flexible circuit board, the action of the shrapnel tends to exceed the horizontal plane at the bottom. When the operating force is too large, the shrapnel is easily deformed in the opposite direction and cannot be restored. In fact, in flexible circuit boards, the keypad feel can be guaranteed by drumming on the circuit layer. Our factory has advanced drum package equipment and technology to ensure that the keys feel uniform and feel good.

7. Luminous body: Be sure to open the bottom rubber mold;

a) The LED line and the lower line are on the same layer: the structure is simple, but the LED window must be convex, otherwise, the LED light will lift the panel; it is suitable to use a small LED light with a short height or a small number of LED lights;

b) Different layers of the LED circuit and the lower circuit: the structure is complex, but the LED window does not have to be convex, and it is suitable to use two-color LED lights or a large number of LED lights; punching molds and bottom rubber molds are required;