Patent ID: 6373265
Filing Date: 2002-04-16
Classification: G01D,G06F,H01H

Abstract:
An electrostatic capacitive touch sensor, comprising:a substrate having a group of fixed electrodes which are disposed to work as a pair formed thereon; and a movable electrode plate that is integrally molded from a material selected from the group consisting of rubber and resin having an elastic property as a whole and has at least a face which opposes the group of fixed electrodes, said face being made from a material selected from the group consisting of a conductive rubber and a conductive resin, said movable electrode plate being provided with a protrusion which extends downward and a lower end of which is in contact with a center portion of said group of fixed electrodes of said substrate, wherein the group of fixed electrodes and the movable electrode plate are allowed to form a plurality of variable electrostatic capacitive sections, and wherein in response to the magnitude and direction of a force applied onto the movable electrode plate, the electrostatic capacitances of the respective variable electrostatic capacitive sections are allowed to change.