Printed susbstrate having reinforcement patterns of varying size

Details Printed susbstrate having reinforcement patterns of varying size Printed susbstrate having reinforcement patterns of varying size

1995-01-25

1996-12-17

Ryan, Patrick

Stock material or miscellaneous articles

Patched hole or depression

428131, 428209, 428596, 174166R, 174265, B32B 900

Patent

active

055851576

ABSTRACT:
A printed substrate having a structure to prevent breakage of the printed substrate by distributing stress which acts on a border of reinforcement patterns provided in the substrate. The printed substrate includes multiple layer conductive patterns, through-holes which pass through the conductive patterns and the printed substrate, and reinforcement patterns formed around the perimeters of the through-holes in the multiple layers of the printed substrate. The sizes and/or shapes of the reinforcement patterns in each layer differ such that stress acting on the border of the reinforcement pattern is distributed.

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