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)
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:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/25
Domestic Patent References:
WO2018110057A1 | 2018-06-21 |
Foreign References:
JP2013074411A | 2013-04-22 | |||
JPH02131344U | 1990-10-31 | |||
JP2006261158A | 2006-09-28 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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