Patent ID: 7218003
Filing Date: 2007-05-15
Classification: H01L

Abstract:
1. A microelectronic workpiece for fabricating a plurality of microelectronic devices, comprising: a substrate having a device side and a backside; a plurality of dies formed on the device side of the substrate, the dies having a dielectric layer over the dies; a plurality of ball-pads on the dielectric layer arranged in ball-pad arrays over corresponding dies on the substrate, wherein the ball-pads of one array are electrically coupled to the bond-pads of a corresponding die; a plurality of solder bumps attached to the ball-pads; and a protective film over the dielectric layer and in contact with side portions of the solder bumps, the protective film being a semi-soft preformed press-on film having a first surface that is tacky and configured to be pressed-on to, and attached to, the dielectric layer and a second surface at least approximately opposite the first surface, the semi-soft preformed film being pressed onto the dielectric layer so that at least a portion of the solder bumps pierce the first and second surfaces of the preformed film.