Patent ID: 7348261

Claim:
A method of forming a chip module comprising: providing a chip having an array of conductive pads; providing a temporary glass substrate; forming conductive pads on said temporary glass substrate positioned for connection to a packaging substrate for said chip module; providing a flexible redistribution thin film having first and second surfaces and having multiple layers of redistribution metallurgy with said flexible redistribution thin film formed on said temporary glass substrate so that said first surface is positioned on said glass substrate with said conductive pads formed thereon and said second surface is exposed; forming an array of conductive pads on said exposed second surface of said flexible redistribution thin film matching the array of conductive pads on said chip; attaching respective ones of said array of conductive pads on said chip to respective ones of said array of conductive pads on said exposed second surface of said flexible redistribution thin film by solder ball connections so as to form an array of solder ball connections each having space between it and adjacent solder ball connections and filling said space between said solder ball connections with an epoxy before removal from said temporary substrate; and removing by laser ablation said flexible redistribution thin film and chip from said temporary glass substrate to thereby expose said first surface of said flexible redistribution thin film with said first surface having included thereon said conductive pads formed on said glass substrate.