Patent ID: 7154188

Claim:
A semiconductor chip comprising: a semiconductor substrate including first and second surfaces and a plurality of side surfaces, the first and second surfaces being parallel to each other and facing in opposite directions, the side surfaces connecting peripheries of the first and second surfaces; an integrated circuit formed in the first surface of the semiconductor substrate; and electrodes formed on the first surface of the semiconductor substrate, wherein at least one of the side surfaces is an inclined surface with respect to the first and second surfaces, wherein a first groove is formed in the inclined surface, and wherein the first groove extends in a direction which intersects a plane parallel to the first and second surfaces and extends in a direction which intersects every plane which intersects the first and second surfaces at right angles wherein the second surface is a rectangle; and wherein a plurality of second grooves, which are formed in the second surface, extends in a direction which intersects all sides of the rectangle.