Patent ID: 7002787

Claim:
A capacitor apparatus of the capacity variable type comprising: an insulation substrate in which at least two capacitor electrodes are formed on one surface in the state where insulation therebetween is maintained with each other; an actuator formed by an insulating material, and having an external shape to bridge over the respective capacitor electrodes on one surface, the actuator being adapted so that a common conductor respectively constituting capacitors are formed between the conductor and the respective capacitor electrodes; and drive means for carrying out an operation to allow the actuator to be in contact with the principal surface of the insulating substrate, or to allow it to be away therefrom, wherein the actuator adjusts opposite spacing between the actuator and the insulating substrate by the drive means, whereby capacitance adjustment of the respective capacitors is carried out; and wherein the drive means is composed of a fixed electrode for drive formed on the principal surface of the insulating substrate in the state where insulation with respect to the capacitor electrode is maintained, and a movable electrode for drive formed at the actuator in correspondence with the drive electrode in the state where insulation with respect to the conductor is maintained, and wherein the actuator is driven by electrostatic force produced between the drive fixed electrode and he drive movable electrode by application of drive voltage; wherein at least three capacitor electrodes or more are formed on the insulating substrate, and wherein either one of capacitor electrodes is caused to be a common electrode to constitute capacitor by this common electrode and other capacitor electrodes to thereby constitute multiple operating capacitor which carries out interlocking operation each other by the movable electrode and further wherein at least one capacitor electrode has a draw-out portion.