Patent ID: 7294532

Claim:
A method for manufacturing a semiconductor device, comprising: mounting a semiconductor chip on a circuit board having an insulating substrate, a plurality of wiring layers arranged on the insulating substrate, and bumps formed on the wiring layers respectively, in which the bump is provided across a longitudinal direction of a corresponding one of the wiring layers so as to extend over regions on both sides of the wiring layer in a direction perpendicular to the longitudinal direction of the wiring layer and contact a surface of the insulating substrate, without a stepped portion formed on a surface of the bump, and a cross sectional shape of the bump taken in a width direction of the wiring layer is such that a central portion is higher than both side portions; and connecting electrode pads of the semiconductor chip to the bumps, thereby achieving connection between the electrode pads of the semiconductor chip and the wiring layers via the bumps.