Patent ID: 6580620
Filing Date: 2003-06-17
Classification: H01L,H05K

Abstract:
A matrix type printed circuit board for semiconductor packages comprising:resin substrate having a rectangular shape provided with two parallel longer edges and two parallel shorter edges; a plurality of printed circuit board (PCB) units formed on at least one surface of the resin substrate and arranged in a matrix array having at least two rows, each of the PCB units having a semiconductor chip mounting region at a central portion thereof; a plurality of first mold runner gates each formed at one corner of an associated one of the PCB units included in a first one of the at least two rows arranged adjacent to a first one of the longer edges of the resin substrate, the one corner being arranged adjacent to the first longer edge of the resin substrate; a plurality of second mold runner gates each formed at one corner of an associated one of the PCB units included in a second one of the at least two rows arranged adjacent to the first-row PCB units, the one corner of each PCB unit included in the second row being arranged nearest to the first mold runner gate of an associated one of the PCB units arranged in the first row and in the same column as the second-row PCB unit; and a plurality of first integrate mold runners each connected between the first and second mold runner gates of adjacent ones of the PCB units respectively arranged in the first and second rows while being arranged in the same column.