In one form of the invention, a laser beam propagates directly through bulk material of a TAB tape or base, to heat and form a bond between electrical leads formed on the base and aligned contact bumps. In another form, a chromium seed-metal layer is formed on a TAB tape or base, and leads are in turn...http://www.google.es/patents/US6983539?utm_source=gb-gplus-sharePatente US6983539 - Method of forming an electrical connection between electrical leads of a tab circuit and electrical contact bumps
Method of forming an electrical connection between electrical leads of a tab ...
