Patent ID: 6885101
Filing Date: 2005-04-26
Classification: H01L

Abstract:
1. A microelectronic workpiece for manufacturing a plurality of microelectronic devices, comprising: a substrate; a plurality of dies formed on the substrate, the dies having integrated circuitry and a plurality of bond-pads electrically coupled to the integrated circuitry; a redistribution layer having a first dielectric layer over the dies, a second dielectric layer over the first dielectric layer, ball-pads arranged in ball-pad arrays corresponding to the dies, and traces coupling the bond-pads of a die to the ball-pads of a corresponding ball-pad array; solder balls on the ball-pads, wherein the solder balls project from the ball-pads by a ball height; and a protective coating over the second dielectric layer and between the solder balls, the protective coating being a preformed film having a thickness less than the ball height and an outer surface formed by a removable backing member.