Patent ID: 6437588
Filing Date: 2002-08-20
Classification: G01R,H01L,H05K,Y10T

Abstract:
A circuitry testing substrate comprising:a base semiconductive substrate having an outer surface and comprising a plurality of receptacles formed into the base semiconductive substrate through the outer surface, the respective receptacles having a lateral periphery at the base semiconductive substrate outer surface; first insulative comprising material received over the base semiconductive substrate both within the receptacles and laterally outward of the receptacles, the first insulative comprising material having an outer surface elevationally outward of the receptacles; a conductive resistance heating material received over the insulative comprising material outer surface only elevationally outward of the respective receptacles and received about only a portion of the respective receptacle lateral peripheries; second insulative comprising material received over the conductive resistance heating material elevationally outward of the receptacles and over the first insulative comprising material within the receptacles; and conductive engagement material received within the receptacles over the second insulative comprising material and spaced from the conductive resistance heating material, the conductive engagement material extending to elevationally outward of the respective receptacles and laterally over only respective lateral portions of the conductive resistance heating material received about the respective receptacle lateral peripheries.