发明申请
- 专利标题: ELASTIC WAVE DEVICE AND ELECTRONIC DEVICE USING THE SAME
- 专利标题(中): 弹性波装置及使用该装置的电子装置
-
申请号: US12903326申请日: 2010-10-13
-
公开(公告)号: US20110084573A1公开(公告)日: 2011-04-14
- 发明人: Toru YAMAJI , Tetsuhiro Korechika , Koji Kawakita , Eiji Kawamoto , Mitsuhiro Furukawa , Kozo Murakami
- 申请人: Toru YAMAJI , Tetsuhiro Korechika , Koji Kawakita , Eiji Kawamoto , Mitsuhiro Furukawa , Kozo Murakami
- 优先权: JP2009-236937 20091014; JP2009-236938 20091014
- 主分类号: H01L41/047
- IPC分类号: H01L41/047 ; H01L41/053
摘要:
An elastic wave device has the following elements: a piezoelectric substrate; an inter-digital transducer (IDT) electrode disposed on the piezoelectric substrate; internal electrodes disposed above the piezoelectric substrate and electrically connected to the IDT electrode; side walls disposed above the internal electrodes surrounding the IDT electrode; a cover disposed above the side walls so as to cover a space above the IDT electrode; an electrode base layer disposed on the internal electrodes outside the side walls; and connection electrodes disposed on the electrode base layer. Each connection electrode has a first connection electrode disposed on the electrode base layer, and a second connection electrode disposed on the first connection electrode. The horizontal sectional shape of the second connection electrode is non-circular.
公开/授权文献
- US08471433B2 Elastic wave device and electronic device using the same 公开/授权日:2013-06-25