Patent ID: 7230328

Claim:
A semiconductor package comprising: a semiconductor device with one or more device-side electrodes being formed on a circuit-bearing surface; and a flexible substrate having a patterned wiring and a thermoplastic insulating layer formed on either or both sides of the patterned wiring, the flexible substrate being bent around said semiconductor device, wherein: said flexible substrate has a first electrode provided on said semiconductor device-side surface of said flexible substrate, the first electrode being connected to said device-side electrode of said semiconductor device and sealed by said thermoplastic insulating layer, and a second electrode provided on a surface different from the surface on which said first electrode is provided; said flexible substrate has at least two or more layers of patterned wiring formed thereon; said thermoplastic insulating layer is an adhesive; and said flexible substrate has a portion which is thinner or has a smaller number of wiring layers formed at a bend of said flexible substrate or on a region including the bend than at another portion of the flexible substrate.