Patent ID: 6378758
Filing Date: 2002-04-30
Classification: H01L,H05K

Abstract:
A method of making a structure having leads thereon, comprising:(a) providing a support structure with leads thereon, each said lead including a structure incorporating a structural metal, each said lead including a first end and a tip end remote from said first end, the tip end being movable with respect to said support structure, each said lead including a main region between said ends; (b) treating said leads so as to provide first surfaces wettable by a liquid bonding material in tip regions of the leads adjacent the tip ends thereof and so as to provide a second surface which is not wettable by said liquid bonding material bounding said first surfaces at least at the juncture of the tip region of each lead and the main region thereof, including directly or indirectly exposing said structural metal to a reactant selected from the group consisting of nitrogen and a halogen.