| 摘要 |
<p>An electrical capacitance sensor, wherein an electrode for capacitative element (E1) and a reference electrode (E31) are formed on a substrate (20) so as to oppose to a displacement electrode (40), and a dome-shaped movable electrode for switch (E21) is disposed so as to come in contact with the reference electrode (E31) and be separated from and cover a fixed electrode for switch (E11) formed inside the reference electrode (E31), whereby a switch is turned on when a detection member (30) is operated and the portion of the movable electrode for switch (E21) near the tip part thereof is displaced and comes in contact with the fixed electrode for switch (E11), and the magnitude of a force acting to the detection member (30) can be recognized by a variation in capacitance value of a capacitative element (C1) formed between the displacement electrode (40) and the electrode for capacitative element (E1).</p> |
