A semiconductor device has a semiconductor chip provided with an insulating layer formed so as to be thinner in a first secondary-wire-free area than in a first secondary-wire-containing area. Further, the semiconductor chip has an edge extending further outward than a side wall, which severs as an edge of an upper insulating layer, in an extending direction of a circuit-forming surface of the semiconductor chip on which electrode pads are provided. This makes it possible to provide a semiconductor device capable of suppressing electromagnetic interference between a secondary wire and an electronic circuit of a semiconductor chip and the curvature of a wafer even in the case of overlap between the secondary wire and the electronic circuit, and of reducing the risk of occurrence of chipping in a dicing step.