Patent ID: 8574963

Claim:
A method of manufacturing a semiconductor device comprising the steps of: (a) providing a wiring substrate including a core layer having an upper surface and a lower surface opposite to the upper surface, a plurality of first and second wirings formed on the upper surface of the core layer, a plurality of bonding leads formed on the upper surface of the core layer and electrically coupled to the first wirings, an upper surface-side insulating film formed on the upper surface of the core layer such that the first and second wirings are covered, and such that the bonding leads are exposed, a plurality of lands formed on the lower surface of the core layer and electrically coupled to the bonding leads respectively, and a lower surface-side insulating film formed on the lower surface of the core layer such that the lands are exposed; (b) applying a first flowable adhesive material to a first adhesive material application region in a first chip-mounting region, a shape in a plan view of the first adhesive material application region is rectangular, the first chip-mounting region being provided over the upper surface of the core layer; and (c) mounting a first semiconductor chip, having a first front surface, a plurality of first electrode pads formed on the first front surface, and a first rear surface opposite to the first front surface, in the first chip-mounting region of the wiring substrate via the first adhesive material, and spreading the first adhesive material around the first adhesive material application region, a shape in the plan view of the first semiconductor chip is rectangular, wherein the first chip-mounting region has the first and second wirings, wherein in the step (b), the first adhesive material is applied to the first adhesive material application region provided on a first centerline connecting each center of two short sides facing each other in the first chip-mounting region, and extending along the first centerline, and wherein each of the second wirings is extended along a direction in which the first adhesive material spreads in the step (c).