| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard device providing excellent click action so as to allow a user to surely recognize, as bodily sensation, that a switch is pressed. SOLUTION: This keyboard device includes a first embossed sheet 6 stuck on a membrane switch 1 and a second embossed sheet 7 stuck on top of it. The second embossed sheet 7 is provided with a plurality of second depression parts 8 formed by an embossing process at positions facing to switch elements 5, and the first embossed sheet 6 is provided with first depression parts 9 each embossed in a size smaller than that of the second depression part 8 between the switch elements 5 and the second depression parts 8, whereby a click feeling obtained by a user in depressing the depression part is obtained mainly at the first depression part regardless of the embossed area of the second depression part, and almost the same click feeling is provided in each depression part by equalizing the sizes of the first depression parts regardless of the areas of the second depression parts. COPYRIGHT: (C)2006,JPO&NCIPI
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