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Patent Searching and Data


Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/006157
Kind Code:
A1
Abstract:
Provided is an elastic wave device that can suppress peeling of a cover member from a support member. The elastic wave device 1 comprises: a piezoelectric substrate 2; an IDT electrode 3 (excitation electrode) that is provided on the piezoelectric substrate 2; a support member that has an opening part 4i and is provided on the piezoelectric substrate 2 to surround the IDT electrode 3; and a cover member 5 that is provided on the support member 4 to cover the opening part 4i of the support member 4 and has a central part 5a and a joint part 5c joined to the support member 4. The cover member 5 has a drooping part 5b which is located between the central part 5a and the joint part 5c and in which the distance between the drooping part 5b and the piezoelectric substrate 2 is shorter than the distance between the central part 5a and the piezoelectric substrate 2 and the distance between the joint part 5c and the piezoelectric substrate 2.

Inventors:
INOUE KAZUNORI (JP)
OTSUKA SHINTARO (JP)
KAWASAKI KOICHIRO (JP)
FUKUSHIMA MASAHIRO (JP)
ATARASHI MASAKAZU (JP)
NAKANISHI HIDEFUMI (JP)
FUJITA IWAO (JP)
FUKUDA DAISUKE (JP)
NAKAKURA TOYOTAKA (JP)
Application Number:
PCT/JP2020/025872
Publication Date:
January 14, 2021
Filing Date:
July 01, 2020
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/25
Domestic Patent References:
WO2018110057A12018-06-21
Foreign References:
JP2013074411A2013-04-22
JPH02131344U1990-10-31
JP2006261158A2006-09-28
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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