公开(公告)号：US20140013581A1

公开(公告)日：2014-01-16

申请号：US14031455

申请日：2013-09-19

Applicant: Taiwan Electrets Electronics Co., Ltd.

Inventor： Dar-Ming CHIANG ,  Jen-Luan CHEN ,  I-Hui LIN

IPC: H04R31/00

CPC classification number: H04R31/00 ,  H04R19/013

Abstract: An electrostatic speaker and a method for manufacturing the speaker are disclosed. Said speaker comprises a vibrating film; an electrode portion disposed on a surface of the vibrating film and joined with the vibrating film; and a conductive backplate spaced from the electrode portion by a distance, the conductive backplate forming a plurality of holes, the vibrating film being deformed and vibrated to generate and release a sound through the holes due to a variation of an electric field generated between the conductive backplate and the electrode portion, wherein the conductive backplate is covered by a polymer layer serving as a protective film. The covering polymer layer on the conductive backplate is capable of improving the stability of the electrostatic speaker and increasing its lifespan.

Abstract translation: 公开了一种静电扬声器及其制造方法。 所述扬声器包括振动膜; 设置在所述振动膜的表面并与所述振动膜接合的电极部; 以及与电极部隔开一段距离的导电背板，导电背板形成多个孔，振动膜变形并振动，以产生并释放通过孔的声音，这是由于导电之间产生的电场的变化 背板和电极部分，其中导电背板由用作保护膜的聚合物层覆盖。 导电背板上的覆盖聚合物层能够改善静电扬声器的稳定性并延长其使用寿命。