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1. (WO2018121701) ELECTROSTATIC SPEAKER STRUCTURE

Pub. No.:    WO/2018/121701    International Application No.:    PCT/CN2017/119612
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 30 00:59:59 CET 2017
IPC: H04R 19/02
Applicants: HEAD-DIRECT (KUNSHAN) COMPANY LIMITED
头领科技(昆山)有限公司
Inventors: BIAN, Fang
边仿
Title: ELECTROSTATIC SPEAKER STRUCTURE
Abstract:
An electrostatic speaker structure, comprising a tensioned diaphragm and two plates with openings, a conductive electrode layer being formed on both plates, characterized in that: the plate comprises a metal mesh grid and a ring-shaped rigid frame; the periphery of the metal mesh grid is fixed onto the rigid frame and maintains tension, the metal mesh grid is electrically connected to a signal line; and both plates are located on two sides of the diaphragm, being symmetrically mirrored along the diaphragm. The structure has the advantages that a high-mesh-number metal mesh grid has a very small wire diameter, which is favorable for acoustic diffraction, and very small transacoustic loss, and that a metal mesh grid has high electric field uniformity. A circular metal line has no wedge, lowering the creepage requirements on the electrostatic speaker.