| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard having a depression part of a plastic sheet and having a comfortable click action function with respect to a sheet keyboard using an emboss sheet as a thinning means instead of key tops and actuators. SOLUTION: The keyboard has a membrane switch 1 provided with a plurality of switch elements 13 and an emboss sheet 4 stuck to the surface of the switch 1, the sheet 4 has a plurality of depression parts 41 formed by emboss working on positions opposed to respective switch elements 13 and each depression part 41 has at least one projection 42 projected to the switch element side on its center.
|
