Patent ID: 7640651
Filing Date: 2010-01-05
Classification: B33Y,C23C,C25D,G01R,Y10T

Abstract:
1. A fabrication process for co-fabricating a multi-layer probe array and a space transformer, comprising: (a) forming and adhering a first layer of material to a substrate, wherein the first layer comprises a desired pattern of at least one material; (b) repeating the forming and adhering operation of the steps of (a) a plurality of times to build up the array of probes and the space transformer from a plurality of adhered layers, and wherein at least a portion of the plurality of layers comprises at least one structural material and at least one sacrificial material; and (c) after formation of the plurality of layers, subjecting the plurality of adhered layers to a release process that removes at least a portion of the at least one sacrificial material from the plurality of adhered layers, wherein the space transformer comprise a plurality of interconnect elements that connect on one side to the array of probes that have a first spacing and connect to pads on another side that have a second spacing that is greater than the first spacing.