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Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/045087
Kind Code:
A1
Abstract:
Provided is an elastic wave device that suppresses degradation of resonance characteristics. The elastic wave device is provided with a piezoelectric layer and a pair of electrodes. In a cross section including a first direction and a second direction, at least one electrode of the pair of electrodes includes an upper surface, a lower surface disposed on a side opposite the upper surface and on the piezoelectric layer side, a first side surface, and a second side surface. The first side surface and a first major surface form a first angle different from a second angle formed by the second side surface and the first major surface, wherein at least one of the first angle and the second angle is greater than or equal to 80°.

Inventors:
OUCHI MINEFUMI (JP)
Application Number:
PCT/JP2021/030876
Publication Date:
March 03, 2022
Filing Date:
August 23, 2021
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/25
Domestic Patent References:
WO2020095586A12020-05-14
Foreign References:
JP2018050135A2018-03-29
JPH05243887A1993-09-21
JP2010233210A2010-10-14
JP2013528996A2013-07-11
US20190386635A12019-12-19
JP2006109287A2006-04-20
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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