| 主权项 |
1. A micro-speaker, comprising:
a speaker monomer; a housing, accommodating the speaker monomer and having an opening to output a sound generated by the speaker monomer; and a waterproof membrane, sealing the opening and transmitting the sound generated by the speaker monomer, wherein the waterproof membrane has a center area and a peripheral area surrounding the center area, and a stiffness of the center area is greater than a stiffness of the peripheral area wherein the waterproof membrane comprises a foundation layer and an adhesion layer, the foundation layer defines the center layer and the peripheral area, and the adhesion layer is stacked over the center area of the foundation layer, wherein the adhesion layer comprises two aluminum foils and a sponge layer, and the sponge layer is sandwiched between the two aluminum foils, wherein the waterproof membrane comprises a foundation layer and an adhesion layer, the foundation layer defines the center layer and the peripheral area, and the adhesion layer is stacked over the center area of the foundation layer, wherein the adhesion layer comprises two aluminum foils and a sponge layer, and the sponge layer is sandwiched between the two aluminum foils. |
