A printed circuit assembly includes a fine pitch flexible printed circuit overlay bonded to a normal pitch printed circuit board. The fine pitch flexible printed circuit overlay may provide increased packaging density, direct chip attachment and/or complex routing with a minimal cost impact on...http://www.google.se/patents/US5719749?utm_source=gb-gplus-sharePatent US5719749 - Printed circuit assembly with fine pitch flexible printed circuit overlay mounted to printed circuit board 
