Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Motoi Yamauchi0
Date of Patent
August 3, 2021
Patent Application Number
20180131
Date Filed
January 31, 2018
Patent abstract
An acoustic wave device includes: a first substrate made of a piezoelectric material; an acoustic wave element located on the first substrate; a bump located on the first substrate; a second substrate located on the first substrate through the bump, the second substrate facing the first substrate across an air gap; and a support layer that is located in at least a part of a periphery of the first substrate, is in contact with a side surface of the first substrate, and has a less linear thermal expansion coefficient than the first substrate.
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