Patent ID: 6049971
Filing Date: 2000-04-18
Classification: H01L,Y10T

Abstract:
A method for fabricating a lead frame including a platform for mounting one of a plurality of chips thereon, the plurality of chips including chips of various sizes, the method comprising steps of:providing a base frame adapted to mount each of the plurality of chips of various sizes, the base frame including a plurality of connection leads and at least two support leads extending toward a central portion of the base frame, the central portion having a size substantially equal to the size of a smallest of the plurality of chips;cutting the plurality of connection leads about the central portion to form an opening corresponding to the size of the one of the plurality of chips to be mounted;providing a platform having a periphery slightly larger than the opening and formed from a metal anodized at least at the periphery of the platform; andsoldering the platform to the at least two support leads to form the lead frame, wherein the step of soldering includes soldering the at least two support leads to non-anodized portions of the platform.