Patent ID: 7481352

Claim:
A method for removing a plurality of raised places of contact as bumps, said bumps providing surface contact zones above a substrate, suitable for flip chip contacting to other surfaces, wherein at least some of said raised places of contact are one of non-uniform and irregular, thereby unsuited for flip chip contacting to other surfaces, wherein metallic support segments of a limited lateral size are provided between said raised places of contact and said substrate, said support segments having a melting temperature above a first temperature limit, the raised places of contact made of meltable metal, said meltable metal being meltable above the first temperature limit, said raised places of contact being surface-distributed over the substrate and said substrate not melting within a region of the first temperature limit, wherein a plurality of said raised places of contact are at least in substantial portions melted off from said substrate by contacting the raised contact places for providing surface contact, with one of a molten metal and a molten metallic alloy, wherein the substrate carries a layer of organic fluid for covering or surrounding said raised places of contact prior to contacting them with said molten metal or molten metallic alloy, and the support segments are kept present on said substrate after melting off said at least substantial parts of said raised places of contact, wherein after melting off said bumps as raised places of contact, dome shaped portions of molten metal remain on said support segments on the substrate, said dome shaped molten metal portions cooled down to solidify and form vaulted domes for one of unifying and homogenizing surfaces of said support segments and consisting substantially of metallic material used for melting off.