A flip chip interconnect is made by mating the interconnect bump directly
onto a lead, rather than onto a capture pad. Also, a flip chip package
includes a die having solder bumps attached to interconnect pads in an
active surface, and a substrate having electrically conductive traces in
a die attach surface, in which the bumps are mated directly onto the
traces. In some embodiments the interconnection is formed without
employing a solder mask. In some methods a curable adhesive is dispensed
either onto the bumps on the die or onto the traces on the substrate; the
adhesive is partly cured during the mating process, and the partly cured
adhesive serves to confine the molten solder during a reflow process.