Patent ID: 6570262
Filing Date: 2003-05-27
Classification: H01L,H05K

Abstract:
A mother substrate for forming substrate elements by cutting the mother substrate along a plurality of intersecting cut lines, the mother substrate comprising:a plurality of sections on the mother substrate each being defined by an area between two pairs of said plurality of intersecting cut lines; a region in which a plurality of through-holes are formed at a predetermined distance from each other and on each of said plurality of cut lines; wherein the through-holes on each of the plurality of cut lines are disposed alternately with respect to the through-holes on an adjacent one of the cut lines, such that no two adjacent cut lines have through-holes formed at the same position thereon; and each of said plurality of sections includes side edges and corners where said side edges intersect such that at least two of said plurality of through holes are provided at the corners thereof and at least one of said plurality of through holes is provided at an approximate center of one of said side edges.