Patent ID: 7786564

Claim:
A semiconductor device, comprising: a semiconductor chip in which a plurality of electrode pads is provided on a principal surface; a plurality of bump electrodes which is provided on the electrode pads of the semiconductor chip; a square-shaped wiring board which is disposed on a principal surface side of the semiconductor chip, and in which at least two sides of an outer circumference which face each other are positioned in an area of the principal surface of the semiconductor chip; a plurality of external terminals which is provided on the wiring board, and which are electrically connected to a plurality of the bump electrodes through a wiring of the wiring board; and sealing material which is provided between the semiconductor chip and the wiring board, and which covers a connection part between the bump electrode and the wiring, wherein at least one side of the outer circumference of the wiring board is extended from the principal surface of the semiconductor chip to the area that is outside the principal surface.