发明名称 |
ACOUSTIC WAVE ELEMENTS AND ANTENNA DUPLEXERS, AND MODULES AND ELECTRONIC DEVICES USING SAME |
摘要 |
An acoustic wave element according to certain examples includes a piezoelectric body, an interdigital transducer (IDT) electrode disposed above the piezoelectric body, and a connection electrode disposed above the piezoelectric body and connected to the IDT electrode. A first insulation layer covers the connection electrode, and a second insulation layer covers the IDT electrode. The first insulation layer disposed above the connection electrode has a first thickness T in a direction perpendicular to an upper surface of the piezoelectric body and the second insulation layer disposed above the IDT electrode has a second thickness K in the direction perpendicular to the upper surface of the piezoelectric body. The first thickness T is less than the second thickness K. |
申请公布号 |
US2016028372(A1) |
申请公布日期 |
2016.01.28 |
申请号 |
US201514811132 |
申请日期 |
2015.07.28 |
申请人 |
SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD. |
发明人 |
Iwasaki Tomohiro;Nakamura Hiroyuki |
分类号 |
H03H9/54;H03H9/64;H01P5/12 |
主分类号 |
H03H9/54 |
代理机构 |
|
代理人 |
|
主权项 |
1. An acoustic wave element comprising:
a piezoelectric body; an interdigital transducer (IDT) electrode disposed above the piezoelectric body; a connection electrode disposed above the piezoelectric body and connected to the IDT electrode; a first insulation layer covering the connection electrode and having a first thickness T above the connection electrode in a direction perpendicular to an upper surface of the piezoelectric body; and a second insulation layer covering the IDT electrode and including a first portion having a second thickness K above the IDT electrode in the direction perpendicular to the upper surface of the piezoelectric body, the second thickness K being greater than the first thickness T. |
地址 |
Kadoma-shi JP |