Patent ID: 8747642
Filing Date: 2014-06-10
Classification: B32B,C25D,Y10T

Abstract:
1. A process for fabricating a component of a micro-electro-mechanical system, comprising: a) providing a primary metal structure having cavities along its surface area, the cavities defining predetermined shapes in predetermined locations and having depths of at least 5 micrometers and adapted to receive therein an electroplated sacrificial secondary metal that assists in supporting the primary metal structure; b) depositing a sacrificial secondary metal around the primary metal structure, such that the rate of deposition is faster within the primary metal structure's cavities than outside of the cavities, to form a complex of primary and secondary metal; c) machining the complex of primary and secondary metal; and d) etching away the secondary metal from the machined primary metal structure to form a micro-electro-mechanical system component; wherein the micro-electro-mechanical system is a spring that can be used in conjunction with a probe card assembly to test semiconductor devices.