Variable capacitive element, variable capacitive device, and method for driving the variable capacitive element

A variable capacitive element comprising:

• a first movable electrode and a second movable electrode that are insulated from each other and are combined with each other;
• a fixed electrode arranged to face the first movable electrode and the second movable electrode;
• a dielectric layer provided between the fixed electrode and the first movable electrode as well as the second movable electrode;
• a first wiring part for applying a first driving voltage to the first movable electrode with reference to a potential of the fixed electrode;
• and
• a second wiring part for applying a second driving voltage to the second movable electrode with reference to the potential of the fixed electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage.

A variable capacitive device comprising:

• a variable capacitive element including
• a first fixed electrode and a second fixed electrode that are insulated from each other,
• a movable electrode arranged to face the first fixed electrode and the second fixed electrode,
• a dielectric layer provided between the movable electrode and the first fixed electrode as well as the second fixed electrode,
• a first wiring part for applying a first driving voltage to the first fixed electrode with reference to a potential of the movable electrode, and
• a second wiring part for applying a second driving voltage to the second fixed electrode with reference to the potential of the movable electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage;
• a first driving part that applies the first driving voltage to the first fixed electrode via the first wiring part;
• and
• a second driving part that applies the second driving voltage to the second fixed electrode via the second wiring part.

A variable capacitive device comprising:

• a variable capacitive element including
• a first movable electrode and a second movable electrode that are insulated from each other and are combined with each other,
• a fixed electrode arranged to face the first movable electrode and the second movable electrode,
• a dielectric layer provided between the fixed electrode and the first movable electrode as well as the second movable electrode,
• a first wiring part for applying a first driving voltage to the first movable electrode with reference to a potential of the fixed electrode, and
• a second wiring part for applying a second driving voltage to the second movable electrode with reference to the potential of the fixed electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage;
• a first driving part that applies the first driving voltage to the first movable electrode via the first wiring part;
• and
• a second driving part that applies the second driving voltage to the second movable electrode via the second wiring part.

A method for driving a variable capacitive element, the variable capacitive element including

• a first fixed electrode and a second fixed electrode that are insulated from each other,
• a movable electrode arranged to face the first fixed electrode and the second fixed electrode, and
• a dielectric layer provided between the movable electrode and the first fixed electrode as well as the second fixed electrode,
• the method comprising:
• applying a first driving voltage to the first fixed electrode with reference to a potential of the movable electrode;
• and
• applying a second driving voltage to the second fixed electrode with reference to the potential of the movable electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage.

A method for driving a variable capacitive element, the variable capacitive element including

• a first movable electrode and a second movable electrode that are insulated from each other and are combined with each other,
• a fixed electrode arranged to face the first movable electrode and the second movable electrode, and
• a dielectric layer provided between the fixed electrode and the first movable electrode as well as the second movable electrode,
• the method comprising:
• applying a first driving voltage to the first movable electrode with reference to a potential of the fixed electrode;
• and
• applying a second driving voltage to the second movable electrode with reference to the potential of the fixed electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage.