Electronic equipment, auxiliary material of electronic equipment and rear shell assembly of electronic equipment

The invention provides an auxiliary material applied to electronic equipment. The auxiliary material comprises an adhesive layer, a foam layer and a double-sided gum layer which are stacked in sequence, the auxiliary material is used for being pasted between a rear shell of the electronic equipment and a functional part of the electronic equipment, the adhesive layer is used for being bonded with the functional part, the double-sided gum layer is used for being bonded with the rear shell, and the adhesive force of the surface, bonded with the functional part, of the adhesive layer is smaller than that of the double-sided gum layer. The invention further provides the electronic equipment, the loudspeaker module of the electronic equipment is provided with an open type rear sound cavity design, the electronic equipment comprises a rear shell, a functional component and an auxiliary material, the auxiliary material is provided with a weak-viscosity surface and a strong-viscosity surface which are opposite, the adhesion force of the weak-viscosity surface is smaller than that of the strong-viscosity surface, the weak-viscosity surface is adhered to the functional component, and the functional component is adhered to the rear shell. And the high-viscosity surface is bonded with the rear shell. The invention further provides a rear shell assembly which comprises the rear shell and the auxiliary material adhered to the inner surface of the rear shell. According to the scheme, the vibration of the rear shell caused by the operation of the loudspeaker module can be suppressed, and the user experience is optimized.