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1. (WO2018105392) VIBRATION ELEMENT

Pub. No.:    WO/2018/105392    International Application No.:    PCT/JP2017/041925
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Nov 23 00:59:59 CET 2017
IPC: H04R 9/00
H04R 7/04
H04R 9/02
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: ITO Shingo
伊藤 慎悟
Title: VIBRATION ELEMENT
Abstract:
A vibration element (201) is provided with a vibration plate (101) and a first magnet (magnet (41)). The vibration plate (101) comprises a stacked body (10A) in which a plurality of flexible insulating base material layers are stacked, and a coil (31) formed on the stacked body (10A) and having a first major surface (VS1). The coil (31) includes a plurality of coil patterns (CP1, CP2, CP3) respectively formed on the plurality of insulating base material layers, and has a winding axis (AX) in a stacked direction (Z-axis direction) of the plurality of insulating base material layers. Of the plurality of coil patterns, at least a part of a first major surface-side coil pattern (coil pattern (CP1)) which is disposed closest to the first major surface (VS1) has a line width narrower than a line width of at least one of the other coil patterns. The magnet (41) is disposed in a position which overlaps a coil formation area (CE) as viewed from the Z-axis direction, and disposed in closest proximity to the coil pattern (CP1).