Patent ID: 7646611
Filing Date: 2010-01-12
Classification: H01L,H05K,Y10T

Abstract:
1. A printed circuit board including a mounting region where an electronic component is to be mounted and a non-mounting region where an electronic component is not mounted, comprising: an insulating layer including said mounting region and said non-mounting region; and a plurality of wiring patterns that are formed from an inside of said mounting region on said insulating layer to an inside of said non-mounting region on said insulating layer, wherein respective ends of said plurality of wiring patterns in said non-mounting region increase widths thereof toward respective one sides to form a plurality of test terminal portions, respectively, respective portions of said plurality of wiring patterns on said plurality of test terminal portions side are arranged in parallel with each other, said plurality of wiring patterns are divided into a plurality of groups each including a predetermined number of, at least two, wiring patterns, said predetermined number of test terminal portions in each group are arranged along a length direction of the wiring patterns, and an interval between the test terminal portion that is farthest away in each group from said mounting region and the wiring pattern, being the closest to the group, in the other group adjacent thereto is larger than an interval between the test terminal portion that is the closest in each group to said mounting region and the wiring pattern, being the closest to the group, in said other group adjacent thereto.