Patent ID: 8525531
Filing Date: 2013-09-03
Classification: G06F

Abstract:
1. A variable capacitor for use in conjunction with an electronic circuit board including a first terminal portion and a second terminal portion, said variable capacitor comprising: a dielectric having a first surface portion and a second surface portion opposite to said first surface portion; and a conductive elastic member shaped as an enclosure defined by a bottom surface and a wall surface intersecting said bottom surface to enclose said dielectric, the enclosure forming a board coupling portion to receive at least a portion of the electronic circuit board therein, and the bottom surface of the enclosure forming a dielectric contacting portion, wherein said first terminal portion is coupled to said first surface portion, said second terminal portion is coupled to said board coupling portion, and said dielectric contacting portion is disposed separately from said second surface portion so as to face said second surface portion and is configured to be deformed to come in contact with said second surface portion, and a contact area between said second surface portion and said dielectric contacting portion is changed in correspondence to a depressing force, which is applied against said dielectric contacting portion in a direction toward the dielectric, thereby changing an electrostatic capacitance of the variable capacitor.