| 摘要 |
<p>PROBLEM TO BE SOLVED: To securely detect a depression position even when a display means is pressed with relatively small pushing force by including a center area for detecting an electrode position and a peripheral area which is adjacent to the center area and for detecting a position between the peripheral area and an electrode adjacent to the electrode in the shape of the electrode for a detecting means. SOLUTION: Rectangular switch electrodes 33 are formed in a grid shape longitudinally and laterally as specific intervals. The respective electrodes 33 of one switch sheet 31 of a pair of switch sheets 31 and 31 are connected with one another laterally through a linear connection part 33a and the respective electrodes 33 of the other switch sheet 31 are connected longitudinally through a linear connection part 33a. This switch electrode 33 of a membrane switch 3 is formed including the circular center area 33a for detecting the electrode position and a peripheral area which is adjacent to the center area 33a and for detecting position between the peripheral area and an electrode adjacent to the electrode 33.</p> |
