公开(公告)号：US10045127B2

公开(公告)日：2018-08-07

申请号：US14927985

申请日：2015-10-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ki Won Kim ,  Byoung Hee Lee ,  Chang Shik Yoon ,  Ho Chul Hwang

IPC: H04R25/00 ,  H04R9/06 ,  H04R7/04

Abstract: A micro speaker is provided. The micro speaker includes a diaphragm, at least one coil coupled with the diaphragm, a magnet configured to interact with a magnetic field induced by the at least one coil, and a yoke plate located on a bottom of the magnet to support the magnet and including a hole therein, top and bottom ends of the hole being opened. An area, adjacent to the hole, of a lower surface of the yoke plate has a height difference relative to another area of the lower surface of the yoke plate.