Patent ID: 6441493
Filing Date: 2002-08-27
Classification: H01L,H05K

Abstract:
A ball grid array (BGA) package including a circuit board having a chip mounting surface where a semiconductor chip is mounted and wiring patterns are formed, and a solder ball mounting surface to which a plurality of solder balls electrically interconnected to the wiring patterns are mounted, said circuit board comprises:ball lands connected to the solder balls; solder ball opening areas defined in a solder mask formed on the solder ball mounting surface, and exposing the ball lands through the solder mask; pattern connecting portions connected to the ball lands; and conductive wiring patterns connected with the pattern connecting portions and electrically interconnected to the solder balls, wherein said pattern connecting portions are aligned radially inwardly, starting from the ball lands, toward substantially a center point of the solder ball mounting surface.