Patent ID: 8141484

Claim:
A screen printing plate comprising at least an opening portion that discharges a printing material for forming a target printing pattern on a matter to be printed by screen printing, the opening portion having an opening end portion, wherein the target printing pattern has a predetermined size and shape; a size of the opening portion is reduced from the size of the target printing pattern; the opening end portion of the opening portion has a projection and recess pattern of a different shape than the target printing pattern shape; a shape of the projection and recess pattern has an amplitude smaller than: (1) a predetermined bleeding width of a printing condition, or (2) a predetermined bleeding width with a center of the amplitude of the shape of the projection and recess pattern conforming to the shape of the target printing pattern; and the shape of the projection and recess pattern having a projection portion located at a position reduced from the target printing pattern by an amount X where 0<X≦25 μm.