Electrostatic capacitive touch sensor
AssigneesNitta Corporation, Wacoh Corporation
InventorsHideo Morimoto, Kazuhiro Okada
Life of this patent
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Abstract
An electrostatic capacitive touch sensor including a substrate having a group of fixed electrodes formed thereon; and a movable electrode plate that is integrally molded by using rubber or resin having an elastic property as a whole and that has at least a face which opposes the group of fixed electrodes and is made of a conductive rubber or a conductive resin. The group of fixed electrodes and the movable electrode plate form a plurality of variable electrostatic capacitive sections, and in response to the magnitude and the direction of a force applied onto the movable electrode plate, the electrostatic capacitances of the respective variable electrostatic capacitive sections are allowed to change.
Claims28
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.
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 an elastomer as a whole and has at least a face which opposes the group of fixed electrodes, said face being made of a conductive elastomer, 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.
An electrostatic capacitive touch sensor, comprising:
- a substrate having a group of fixed electrodes formed thereon;
- a movable electrode plate that is molded by using elastomer and has at least a face that opposes the group of fixed electrodes and is made of a conductive elastomer;
- and
- an operation portion which is made of a hard material, formed integrally with the movable electrode plate or separately from the movable electrode plate and can transmit force to the movable electrode plate, 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.
Dependencies are inferred from the claim text.