Acoustic wave device with suppressed higher order transverse modes
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United States of America Patent
Stats
-
May 2, 2017
Issued Date -
N/A
app pub date -
May 11, 2015
filing date -
Mar 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an acoustic wave device, an unnecessary high-order transverse mode wave is suppressed. The acoustic wave device includes a piezoelectric substrate, at least one pair of interdigital transducer (IDT) electrodes formed on the piezoelectric substrate, and a dielectric film which covers at least a part of the piezoelectric substrate and the IDT electrodes. The IDT electrodes each have a plurality of electrode fingers interleaved with each other. An acoustic velocity of an acoustic wave in the area in which the electrode fingers are interleaved with each other is greater than an acoustic velocity of an acoustic wave in an edge area including end portions of the electrode fingers.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- H01L Class
- 25498 Applications Filed
- 22451 Patents Issued To-Date
- 88.06 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 140 Citation Count
- H01L Class
- 99.74 % this patent is cited more than
- 8 Age
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