- Patent Title: Bulk acoustic filter device and method of manufacturing the same
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Application No.: US15673498Application Date: 2017-08-10
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Publication No.: US10432172B2Publication Date: 2019-10-01
- Inventor: Jin Woo Yi , Chan Hee Park , Kwang Su Kim , Sang Jin Kim
- Applicant: Samsung Electro-Mechanics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: NSIP Law
- Priority: KR10-2016-0112762 20160901; KR10-2016-0164443 20161205
- Main IPC: H03H9/54
- IPC: H03H9/54 ; H03H9/17 ; H03H9/10 ; H03H3/02 ; H03H9/02 ; H03H9/13

Abstract:
A bulk acoustic filter device includes: a substrate including a through hole formed by a first recess and a second recess adjacent to the first recess; a membrane layer forming a cavity with the substrate; a filter including a lower electrode disposed on the membrane layer, a piezoelectric layer disposed to cover a portion of the lower electrode, and an upper electrode formed to cover a portion of the piezoelectric layer; and an electrode connecting member disposed in the substrate, and connected to either one of the lower electrode and the upper electrode, wherein the electrode connecting member includes an insertion electrode disposed in the first recess, and a via electrode connected to the insertion electrode, and disposed on an inner peripheral surface of the second recess and a surface of the substrate.
Public/Granted literature
- US20180062619A1 BULK ACOUSTIC FILTER DEVICE AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2018-03-01
Information query
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