Patent ID: 6649441
Filing Date: 2003-11-18
Classification: G01R,H01L

Abstract:
Method for fabricating a microcontact spring on a substrate with at least one contact pad and a first insulator layer with a window above the contact pad, which comprises the steps of:a) producing a via opening in a second insulator layer above a location to be contact-connected; b) producing a depression in the second insulator layer; c) filling the via opening and the depression in the second insulator layer with a metal; d) leveling the surface produced by the preceding steps, so that excess metal and insulator material are removed; e) selectively etching back a first predetermined thickness of the second insulator layer, so that the second insulator layer remains with a second predetermined thickness, so that a section of the via opening is maintained and serves as mechanical retention for the resulting microcontact spring.