Membrane switch key touch structure of metal shrapnel is the forming of metal shrapnel, decorate in the interior of the switch structure. Shrapnel joint on a button for the electric circuits of the form.
Advantages: (1) the structure has a good sense of touch performance.
(2) the high temperature condition is still a long service life.
Shortcomings: (1) used in the soft panel, if the panel is bent on a raised area panel may be damaged.
(2) the structure is best used for printed circuit board or rigid panel