Patent ID: 6529027
Filing Date: 2003-03-04
Classification: B33Y,G01R,H01L,H05K,Y10T

Abstract:
An interposer for electrically connecting a flip-chip semiconductor device to a substrate, comprising:an interposer substrate with a top surface and a bottom surface; a first array of contact pads exposed at said top surface and located correspondingly to conductive structures of the semiconductor device; and a fence disposed over said top surface, said fence comprising a plurality of at least partially superimposed, contiguous, mutually adhered layers, said fence including at least one laterally recessed area extending substantially along a height of at least a portion of said fence located over said interposer substrate in a corner thereof; and a receptacle within said fence, said first array of contact pads being exposed in said receptacle, said receptacle configured to receive the semiconductor device and said fence configured to align the semiconductor device with said interposer substrate.