Patent ID: 6489574
Filing Date: 2002-12-03
Classification: H05K

Abstract:
A printed wiring board provided at least with a first layer and a second layer, having multi-terminal device with a plurality of terminals arranged in matrix assembled thereon, comprising:many numbers of lands divided into blocks, being arranged in matrix on said first layer to connect each terminal of said multi-terminal device correspondingly; first through holes connected with the lands positioned on the innermost line of said many lands to penetrate between said first layer and said second layer; second through holes positioned outside the lands on the outermost line of said many lands to penetrate between said first layer and said second layer; signal lines having one end thereof connected with said first through holes, and the other end thereof connected with said second through holes; and signal line patterns drawn out from the many lands divided into blocks in the same direction, said signal line patterns form the lands positioned on the innermost line of said many lands being arranged through said first though holes, signal lines, and said second through holes.