A support device (01) comprises a base (10) and at least one support member (20) disposed on an upper surface of the base (10), the support member (20) each at least comprises a support portion (210) contacting a back shell to be supported. The support portion (210) comprises: a contact surface (211) facing the back shell; the contact surface (211) comprising a first subarea (211a) parallel with a plane where the back shell is located and a second subarea (211b) which intersects a side, away from the upper surface, of the first subarea (211a), and the second subarea (211b) being angled in a direction away from the plane where the back shell is located; and a first retainer portion (212) disposed at a position where the first subarea (211a) intersects the second subarea (211b), and a second retainer portion (213) disposed at the second subarea (211b). The support device (01) may reduce the forward/downward inner stress of the back shell per se and improve the stability and strength of the overall structure of the back shell.