Electro-mechanical energy conversion element and vibration type driving device
AssigneeCanon Kabushiki Kaisha
InventorsYutaka Maruyama, Nobuyuki Kojima
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Abstract
A stacked type electro-mechanical energy conversion element for use with a vibration driven device and a power supply includes a surface layer, a first surface electrode made of conductive material formed in the surface layer, for receiving a driving electrical signal from the power supply, and a second surface electrode formed in the surface layer that defines an index, where the second surface electrode is formed of the same material as the first surface electrode.
Claims34
A stacked type electro-mechanical energy conversion element for use with a vibration driven device and a power supply, the energy conversion element comprising:
- a surface layer;
- at least one first surface electrode formed in said surface layer of said energy conversion element of a conductive material for receiving a driving electrical signal from the power supply;
- and
- at least one second surface electrode formed in said surface layer and defining an index on said surface layer of said conversion element, said at least one second surface electrode being formed of the same conductive material as said at least one first surface electrode and indicating an orientation of said energy conversion element.
A vibration type driving device comprising:
- a vibrating member including a stacked type electro-mechanical energy conversion member for generating a vibration in said vibrating member;
- and
- a contact member contactable with said vibrating member and movable relative to said vibrating member by vibration generated in said vibrating member;
- a power supply electrode formed in a surface of said electro-mechanical energy conversion element;
- and
- a plurality of indexes provided in the surface of said electro-mechanical energy conversion element, said plurality of indexes being separate from said power supply electrode and being formed of the same material as said power supply electrode.
A stacked type electro-mechanical energy conversion element for use with a vibration driven device, comprising:
- a first layer having an external surface;
- a plurality of interior layers stacked with said first layer;
- a plurality of internal electrodes formed on respective surfaces of said plurality of interior layers;
- a via-hole electrode formed in the external surface and extending through said first layer, said via-hole electrode comprising conductive material that forms an electrical connection from the external surface to at least one of said plurality of internal electrodes;
- and
- indexes formed in the external surface and extending at least partially through said first layer, said indexes comprising the same conductive material as said via-hole electrode and not contacting said internal electrodes.
Dependencies are inferred from the claim text.