Invention Grant
- Patent Title: Elastic wave element with a reinforcement electrode and ladder filter using same
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Application No.: US14624993Application Date: 2015-02-18
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Publication No.: US09614495B2Publication Date: 2017-04-04
- Inventor: Yosuke Hamaoka , Mitsunori Miyanari , Hiroyuki Nakamura , Hidekazu Nakanishi
- Applicant: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.
- Applicant Address: JP Kadoma-Shi
- Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.
- Current Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.
- Current Assignee Address: JP Kadoma-Shi
- Agency: Lando & Anastasi, LLP
- Priority: JP2014-028059 20140218
- Main IPC: H03H9/64
- IPC: H03H9/64 ; H03H9/02 ; H01L41/047 ; H01L41/107 ; H03H9/60

Abstract:
Methods and apparatus for reducing electric loss in an elastic wave element. In one example, the elastic wave element includes a piezoelectric body having a upper surface, an interdigital transducer (IDT) electrode disposed on the piezoelectric body, a connection wiring 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 provided above the connection wiring, the reinforcement electrode being in contact with and electrically connected to the lower connection wiring.
Public/Granted literature
- US20150236238A1 ELASTIC WAVE ELEMENT AND LADDER FILTER USING SAME Public/Granted day:2015-08-20
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