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Patent Searching and Data


Title:
ELASTIC WAVE DEVICE AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2016/147688
Kind Code:
A1
Abstract:
Provided is an elastic wave device wherein unwanted waves do not easily cause deterioration of characteristics. An elastic wave device 1 wherein an IDT electrode 3 is provided as an excitation electrode to a piezoelectric body layer 2, wherein an acoustic reflection layer 5 is laminated upon a first main surface 2a of the piezoelectric body layer 2, wherein the acoustic reflection layer 5 has high acoustic impedance layers 5b, 5d, 5f that have relatively high acoustic impedance and low acoustic impedance layers 5a, 5c, 5e that have relatively low acoustic impedance, and wherein the acoustic reflection layer 5 has an unwanted-wave reflection suppression structure 5x that suppresses the reflection of unwanted waves toward the piezoelectric body layer 2.

Inventors:
KISHIMOTO YUTAKA (JP)
OMURA MASASHI (JP)
Application Number:
PCT/JP2016/051030
Publication Date:
September 22, 2016
Filing Date:
January 14, 2016
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/25; H03H3/08; H03H9/145; H03H9/17
Domestic Patent References:
WO2012086441A12012-06-28
WO2009029134A12009-03-05
Foreign References:
JP2007208845A2007-08-16
JP2005159606A2005-06-16
JP2007129391A2007-05-24
JP2014176095A2014-09-22
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
Patent business corporation Miyazaki and table-of-contents patent firm (JP)
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