Patent ID: 7910405

Claim:
A semiconductor device fabrication method comprising: separately arranging a plurality of semiconductor constructing bodies on an upper surface of a base member, each semiconductor constructing body including a semiconductor substrate, a plurality of external connecting electrodes provided on the semiconductor substrate, and a sealing film which covers peripheral surfaces of the external connecting electrodes; forming a first adhesion increasing film on peripheral side surfaces of the semiconductor substrate and the sealing film of each semiconductor constructing body, and forming a second adhesion increasing film continuously with the first adhesion increasing film on the upper surface of the base member, wherein the first and second adhesion increasing films are made of a silane coupling agent; attaching an insulating layer onto the upper surface of the base member by the first and second adhesion increasing films, such that the first adhesion increasing film is positioned between the insulating layer and the peripheral side surfaces of the semiconductor substrate and the sealing film; and obtaining a plurality of semiconductor devices including at least one semiconductor constructing body by cutting the base member and insulating layer between the plurality of semiconductor constructing bodies.