A printed circuit board (PCB) for use in chip-on-board (COB) packages reduces failures due to warping of the COB packages. The PCB includes a board body having a upper surface and a lower surface, a chip bonding area on the upper surface for attaching a semiconductor device, and a plurality of conductors...http://www.google.fr/patents/US6104095?utm_source=gb-gplus-shareBrevet US6104095 - Printed circuit board and chip-on-board packages using same
Printed circuit board and chip-on-board packages using same
