A semiconductor device package includes a first electronic device and a second electronic device. The first electronic device includes a first redistribution layer (RDL) including a circuit layer. The second electronic device is disposed on the first RDL of the first electronic device. The second electronic device includes an encapsulant and a patterned conductive layer. The encapsulant has a first surface facing the first RDL of the first electronic device, and a second surface opposite to the first surface. The patterned conductive layer is disposed at the second surface of the encapsulant, and is configured to be electrically coupled to the circuit layer of the first RDL of the first electronic device.