Patent ID: 8598692

Claim:
A semiconductor device, which is a tape carrier semiconductor device including a semiconductor element provided on a top surface of a tape base material so as to be electrically connected with a wiring pattern provided on the top surface of the tape base material, the semiconductor device comprising: a top-side insulating protective film covering the top surface of the tape base material; and a reverse-side insulating protective film covering a reverse surface of the tape base material, the top-side insulating protective film having (i) a top-side opening section opening in at least a part of a region where the top surface of the tape base material faces the semiconductor element and (ii) a protruding opening section outwardly extending from the region, the reverse-side insulating protective film having a reverse-side opening section opening on a reverse side below the top-side opening section, an opening of the reverse-side opening section being more than 1.00 time to not more than 8.50 times larger in an area than the region where the top surface of the tape base material faces the semiconductor element, and a filling agent filling a gap between the semiconductor element and the tape base material in the region where the top surface of the tape base material faces the semiconductor element.