A printed circuit board for minimizing thermally-induced mechanical damage of solder joints electrically connecting electronic components to the printed circuit board. The printed circuit board includes a first substrate, solder pads, and an expansion layer. The first substrate has two substantially...http://www.google.com/patents/US5986217?utm_source=gb-gplus-sharePatent US5986217 - Printed circuit board for mitigating thermally-induced mechanical damage of solder joints connecting electronic components
