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US 10,536,132 B2Granted
Elastic wave element, filter element, and communication device
AssigneeKYOCERA Corporation
InventorsYusuke Morimoto, Masahisa Shimozono
Life of this patent
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Abstract
An elastic wave element having a piezoelectric substrate equipped with a first main surface, and an excitation electrode arranged on the first main surface and having multiple electrode fingers, wherein, in a cross-sectional view in the direction orthogonal to the first main surface, the width of the electrode fingers at a first height at a distance from the first main surface is greater than the width at a second height located closest to the first main surface.
Claims15
An elastic wave element comprising:
- a piezoelectric substrate comprising a first main surface, wherein the first main surface comprises a flat portion;
- and
- an excitation electrode comprising a plurality of electrode fingers, the excitation electrode being on the first main surface, such that the plurality of electrode fingers are located on the flat portion of the first main surface,
- wherein each of the plurality of electrode fingers is wider at a first height than at a second height in a cross-sectional view in a direction orthogonal to the first main surface, the second height being nearest to the first main surface.
1 more element
Dependencies are inferred from the claim text.