Patent ID: 8508954

Claim:
An electronic system comprising: a control unit; an input unit configured to transmit an electrical signal to the control unit, an output unit configured to receive the electrical signal from the control unit and to output a processing result of the electronic system; a storage unit configured to store data to be processed or already processed by the control unit; and a communication unit configured to receive the electrical signal from the control unit and to transmit or to receive the electrical signal to or from another electronic system, wherein at least one of the control unit, the input unit, the output unit, the storage unit, and the communication unit includes an apparatus, and the apparatus includes, a first substrate having a first land, a second substrate having a second land, a first molding compound disposed between the first substrate and the second substrate, a first semiconductor chip disposed on the first substrate and in contact with the first molding compound, wherein a surface of the first semiconductor chip is exposed, a first connector contacting the first land, and a second connector contacting the second land, the second connector disposed on the first connector, wherein a volume of the second connector is greater than a volume of the first connector, the first molding compound is in contact with the second connector, and at least a portion of the second connector is surrounded by the first molding compound.