Vibration device and tactile presentation device
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuhei Yamagishi, Junichi Hashimoto, Kentaro Usui
Life of this patent
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Abstract
A vibration device that includes a diaphragm having a perimeter; a film which expands and contracts in a planar direction by application of a voltage, and an electrode on each main surface thereof; and a wire extended from the electrode outside of the perimeter of the diaphragm. The diaphragm has a first region in a node of vibration and a second region in a position other than the node of vibration. The wire has a section extended from the second region toward the first region, or is extended from the first region outside of the perimeter of the diaphragm.
Claims18
A vibration device, comprising:
- a diaphragm having a perimeter;
- a film coupled to the diaphragm, the film having first and second opposed main surfaces, and constructed to expand and contract with application of a voltage;
- a first electrode on the first main surface of the film;
- a second electrode on the second main surface of the film;
- a first wire extending from the first electrode outside of the perimeter of the diaphragm;
- and
- a second wire extending from the second electrode outside of the perimeter of the diaphragm,
- wherein
- the diaphragm has at least one first region located in a node of vibration of the film and a second region located in a position other than the node of vibration of the film,
- the first wire has a first section extending from the second region toward the at least one first region, and
- the second wire has a second section extending from the second region toward the at least one first region.
A vibration device, comprising:
- a diaphragm having a perimeter;
- a film coupled to the diaphragm, the film having first and second opposed main surfaces, and constructed to expand and contract with application of a voltage;
- an electrode on at least one of the first and second main surfaces of the film;
- and
- a wire extending from the electrode outside of the perimeter of the diaphragm,
- wherein
- the diaphragm has a first region located in a node of vibration and a second region located in a position other than the node of vibration, and
- the wire is extended from the first region outside of the perimeter of the diaphragm.
Dependencies are inferred from the claim text.