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AssigneeInternational Business Machines Corporation
InventorsGareth G. Hougham, Keith E. Fogel, Paul A. Lauro, Joseph Zinter, Jr.
Estimating the term…
Methods for fabricating Land Grid Array (LGA) interposer contacts that are both conducting and elastic. Also provided are LGA interposer contacts as produced by the inventive methods. Provided is LGA type which utilizes a pure unfilled elastomer button core that is covered with an electrically-conductive material that is continuous from the top surface to the bottom surface of the button structure. In order to obviate the disadvantages and drawbacks which are presently encountered in the technology pertaining to the fabrication and structure of land grid arrays using electrically-conductive interposer contacts, there is provided both methods and structure for molding elastomer buttons into premetallized LGA carrier sheets, and wherein the non-conductive elastomer buttons are surface-metallized in order to convert them into conductive electrical contacts.
An interposer for a land grid array (LGA) forming an electrical interconnect structure between electronic components, said interposer comprising at least one dielectric elastic contact button essentially constituted of siloxane, and an electrically conductive material selected from the group of materials consisting of nickel, titanium alloy, copper or gold and other metals, being disposed on the exterior of said at least one contact button providing said electrical interconnect structure, said metal selectively comprising a continuous shell of electrical-conductive material covering the external surface of said at least one elastic contact button, or an intermittent pattern of electrically-conductive material deposited on the external surface of said at least one elastic contact button, said electrically conductive material extending between opposite ends of said contact button.
A method of fabricating an interposer for a land grid array (LGA) forming an electrical interconnect structure between electronic components, comprising:
Dependencies are inferred from the claim text.