ACOUSTIC WAVE ELEMENTS AND LADDER FILTERS USING SAME

WIPO Patent Application WO/2015/125460

A1

Methods and apparatus for reducing electric loss in an acoustic wave element. In one example, the acoustic wave element (60) includes a piezoelectric body (50) having an upper surface, an interdigital transducer (IDT) electrode (10, 20) disposed on the piezoelectric body, a connection wiring (30) disposed on the piezoelectric body and electrically connected to the IDT electrode, the connection wiring having a lower connection wiring and an upper connection wiring provided above the lower connection wiring, and a reinforcement electrode (40) provided above the connection wiring, the reinforcement electrode being in contact with and electrically connected to the lower connection wiring.

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HAMAOKA YOSUKE
MIYANARI MITSUNORI
NAKAMURA HIROYUKI
NAKANISHI HIDEKAZU

PCT/JP2015/000718

August 27, 2015

February 17, 2015

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SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO LTD (JP)

H03H9/02; H03H9/64

US20100148890A1	2010-06-17
US20130234558A1	2013-09-12
EP1274167A2	2003-01-08
US20020121841A1	2002-09-05
EP2175556A1	2010-04-14
EP0702379A1	1996-03-20
JP2011071912A	2011-04-07

MIYOSHI, Hidekazu et al. (2-8 Toranomon 1-chome, Minato-k, Tokyo 01, JP)

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