Invention Grant
- Patent Title: Surface acoustic wave resonator structure and method of forming the same, and filter
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Application No.: US18130504Application Date: 2023-04-04
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Publication No.: US11990891B2Publication Date: 2024-05-21
- Inventor: Guojun Weng , Gongbin Tang , Jingyong Liu
- Applicant: Shenzhen Newsonic Technologies Co., Ltd.
- Applicant Address: CN Guangdong
- Assignee: Shenzhen Newsonic Technologies Co., Ltd.
- Current Assignee: Shenzhen Newsonic Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leason Ellis LLP
- Priority: CN 2211219108.0 2022.10.08
- Main IPC: H03H9/25
- IPC: H03H9/25 ; H03H3/08 ; H03H9/02 ; H03H9/64

Abstract:
A surface acoustic wave resonator structure and a method of forming the resonator structure and a filter are provided. The resonator structure includes: a piezoelectric substrate; an interdigital transducer including a first interdigital electrode structure and a second interdigital electrode structure, wherein the first interdigital electrode structure comprises first interdigital electrodes and a first interdigital electrode lead-out part connected to each other, the second interdigital electrode structure comprises second interdigital electrodes and a second interdigital electrode lead-out part connected to each other, the first interdigital electrodes and the second interdigital electrodes extend along a first direction and are alternately arranged in a second direction; a temperature compensation layer, disposed on a side of the interdigital transducer away from the piezoelectric substrate; and a first protection layer disposed between the interdigital transducer and the temperature compensation layer and configured to protect the interdigital transducer from being oxidized.
Public/Granted literature
- US20230299740A1 SURFACE ACOUSTIC WAVE RESONATOR STRUCTURE AND METHOD OF FORMING THE SAME, AND FILTER Public/Granted day:2023-09-21
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