| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operation switch of which a size can be reduced while improving click feeling (a click rate). Ž<P>SOLUTION: The operation switch includes a substrate 13, a center electrode 15 arranged on one main surface 13a of the substrate 13, an insulation layer 19 formed on the one main surface 13a of the substrate 13 with the center electrode 15 positioned in a center part of an opening 19a, an annular electrode 21 arranged on one main surface 19b of the insulation layer 19 opposite to the substrate 13, and a metal click spring 25, which is mounted on the annular electrode 21 so as to cover the opening 19a of the insulation layer 19, conducts with the annular electrode 21 at a peripheral edge part, and makes the center electrode 15 and annular electrode 21 in a non-conductive state or conductive state. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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