Patent ID: 8110434

Claim:
A method for manufacturing a semiconductor device, comprising: preparing a circuit board including a device forming region, the device forming region including a first surface comprising a first wiring network provided thereon, and a second surface comprising a second wiring network provided thereon; mounting a semiconductor element including electrode pads on the second surface of the device forming region; bonding wires to connect the electrode pads and the second wiring network; forming a sealing resin layer on a second main surface of the circuit board containing the second surface of the device forming region to seal the semiconductor element; cutting linearly an outer peripheral of the device forming region; and forming a curved portion in one side of the device forming region to obtain the semiconductor device, wherein a first distance from the side having the curved portion of the device forming region to the first wiring network is larger than a distance from at least one of the other sides of the device forming region to the first wiring network, and a second distance from the side having the curved portion of the device forming region to the second wiring network is larger than a distance from at least one of the other sides of the device forming region to the second wiring network.