Invention Grant
- Patent Title: Multi-layer raised frame in bulk acoustic wave device
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Application No.: US16576529Application Date: 2019-09-19
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Publication No.: US11082023B2Publication Date: 2021-08-03
- Inventor: Kwang Jae Shin , Jiansong Liu
- Applicant: Skyworks Global Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: Skyworks Global Pte. Ltd.
- Current Assignee: Skyworks Global Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: H03H9/02
- IPC: H03H9/02 ; H03H9/17 ; H03H9/56 ; H03H9/05 ; H03H9/13 ; H03H9/70 ; H03F3/189 ; H04B1/3827 ; H03F3/20

Abstract:
Aspects of this disclosure relate to a bulk acoustic wave device that includes a multi-layer raised frame structure. The multi-layer raised frame structure includes a first raised frame layer positioned between a first electrode and a second electrode of the bulk acoustic wave device. The first raised frame layer has a lower acoustic impedance than the first electrode. The first raised frame layer and the second raised frame layer overlap in an active region of the bulk acoustic wave device. Related filters, multiplexers, packaged modules, wireless communication devices, and methods are disclosed.
Public/Granted literature
- US20200099359A1 MULTI-LAYER RAISED FRAME IN BULK ACOUSTIC WAVE DEVICE Public/Granted day:2020-03-26
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