Patent ID: 6068180
Filing Date: 2000-05-30
Classification: B23K,H01L

Abstract:
A system for connecting a semiconductor chip to a leadframe, the system comprising:a three-dimensional leadframe comprising:a first lead having a first base portion, a first lead tip, and a first longitudinal axis,a second lead having a second base portion, a second lead tip, and a second longitudinal axis,the first and second leads formed substantially adjacent to each other, andthe second lead having a stepped portion such that the lead tips of the first and second leads are separated in a Z-direction and in a Y-direction (where the Y-direction is parallel to the longitudinal axis of the leads and an X-direction intersects adjacent leads); anda bonding support mechanism for holding the three-dimensional leadframe during bonding, the support mechanism comprising:a support body,a trough formed on the support body, the trough having a first surface at a first elevation, the first surface for supporting the second lead tip,a second surface formed on the support body at a second elevation and substantially adjacent to the first surface, the second surface for supporting the first lead tip, andwherein the first elevation and second elevation are displaced from each other.