Capacitive button
AssigneeMitsubishi Electric Corporation
InventorsTakuya Inoue, Takeshi Yamazaki, Tae Orita, Takeshi Ono
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Abstract
A capacitive button capable of improving tolerance to electrostatic discharge is provided. The capacitive button includes: a pair of sensor electrodes which are provided side by side; a floating electrode which is arranged on a front side of the pair of sensor electrodes via an insulating layer; and a ground electrode which is arranged so as to surround the floating electrode, and is grounded without being electrically connected with the pair of sensor electrodes and the floating electrode. By providing the configuration, the tolerance to the electrostatic discharge of the capacitive button can be improved.
Claims6
A capacitive button comprising:
- an operation accepting body which is formed of an insulator;
- a ground electrode which is arranged so as to surround the operation accepting body, and is grounded;
- a pair of sensor electrodes which are arranged on a back side of the operation accepting body, and are formed in a mesh shape;
- a holding body provided on the back side of the operation accepting body;
- and
- a tactile switch provided on a back side of the holding body,
- wherein one of the pair of sensor electrodes is an electrode for transmission and
- another one of the pair of sensor electrodes is an electrode for reception having an area smaller than an area of the electrode for transmission.
Dependencies are inferred from the claim text.