Patent ID: 6900530

Claim:
A stacked IC comprising: a first IC package unit comprising an IC chip, an encapsulant resin and a plurality of lead wires, said IC chip being encapsulated by said first encapsulant resin, wherein each of said lead wires comprises a first end connected to said IC chip and encapsulated by said encapsulant resin, a second end extending outside said first encapsulant resin, and a bend portion arranged between said first end and said second end and having at least one surface exposed outside of said encapsulant resin; a second IC package unit comprising a second IC chip, a second encapsulant resin and a plurality of second lead wires, said second IC chip being encapsulated by said second encapsulant resin, wherein each of said second lead wires comprises a third end connected to said second IC chip and encapsulated by said second encapsulant resin, and a fourth end extending outside said second encapsulant resin; and an interface layer sandwiched between said first IC package unit and said second IC package unit, and having a first side connected to said bend portion of said first IC package unit and a second side connected to said fourth end of said second IC package unit, thereby achieving electrical connection between said first IC package unit and said second IC package unit.