Patent ID: 9402127
Filing Date: 2016-07-26
CPC Classification: H04R

Claim Text:
1. An earphone, the earphone comprising: a shell defining a first space; a thermoacoustic chip disposed in the first space of the shell, wherein the thermoacoustic chip comprises a speaker, the speaker comprises: wherein the thermoacoustic chip further comprises a capsule defining a second space to accommodate the speaker, the capsule has at least one through hole and at least two connectors, the sound wave generator is opposite to the at least one through hole, two of the at least two connectors are electrically connected to the first electrode and the second electrode; the substrate is made of silicon, and a concave-convex structure is defined on the first surface of the substrate; and the concave-convex structure comprises a plurality of recesses and a plurality of bulges alternately located, a first part of the sound wave generator is located on a top surface of the plurality of bulges, a second part of the sound wave generator is suspended over the plurality of recesses, and a depth of each of the plurality of recesses ranges from about 100 micrometers to about 200 micrometers.