Patent ID: 7422707
Filing Date: 2008-09-09
Classification: C09J,H01L,Y10T

Abstract:
1. A semiconductor wafer having a front side that is active and a back side that is opposed to the front side that is inactive wherein the back side of the semiconductor wafer is coated with a conductive composition comprising: a) 66 to 80 wt % conductive filler that has an average particle size of less than 2 microns and a maximum particle size of less than 5 microns, b) 5 to 25 wt % first resin that has a softening point between 80-260° C., c) 5 to 25 wt % solvent, d) 0 to 5 wt % curing agent, and e) 0 to 20 wt % second resin, wherein at room temperature the first resin is substantially soluble in the solvent.