Patent ID: 6215321
Filing Date: 2001-04-10
Classification: G01R,H05K,Y10T

Abstract:
A probe card for wafer-level measurement comprising:a multilayer ceramic board comprising a plurality of insulating films and a plurality of thin-film wiring layers each of which is formed between two of the plurality of insulating films and is electrically connected to another one of the plurality of thin-film wiring layers through a first via formed within the plurality of insulating films, the multilayer ceramic board having been sintered;a thin-film wiring layer pattern formed on a surface of the multilayer ceramic board; anda polyimide film having a plurality of probe terminals formed on a surface thereof,wherein the thin-film wiring layer pattern comprises:via contact regions connected to one of the plurality of thin-film wiring layers through second vias, respectively;probe contact regions connected to the plurality of probe terminals, respectively, andlead regions connecting the via contact regions and the probe contact regions, respectively,a pitch of the via contact regions being greater than that of the probe contact regions.