Patent ID: 7851013

Claim:
A screen printing method comprising the steps of: fixing a substrate sheet for manufacturing a printed circuit substrate on a suction stage by vacuum suction with an underlay substrate sandwiched therebetween; arranging a screen plate on said substrate sheet; printing a material on said substrate sheet through said screen plate; and separating said substrate sheet from said screen plate, wherein said substrate sheet is sectioned into first and second regions having an equal area, said first region includes a first printed circuit substrate formation region and a first blank region, said second region includes a second printed circuit substrate formation region and a second blank region, an area of said first blank region and an area of said second blank region are different from each other, said underlay substrate includes first and second blank corresponding regions that, when said underlay substrate is overlapped with said substrate sheet, face said first and second blank regions of said substrate sheet, respectively, one or plurality of first through holes are formed in said first blank corresponding region, one or plurality of second through holes are formed in said second blank corresponding region, and a sum of areas of said first through holes and a sum of areas of said second through holes are equal to each other.