Patent ID: 7975379
Filing Date: 2011-07-12
Classification: H01R,H05K,Y10T

Abstract:
1. A method comprising making a land grid array (LGA) interposer to be used for mating with interior surfaces of a first electronic device and of a second electronic device, said interior surfaces of said first electronic device and of said second electronic device positioned diametrically opposite each other and being topographically non-planar throughout; measuring said topographies of said interior surfaces of said first electronic device and of said second electronic device by scanning a mating surface of a said first electronic device and of said second electronic device by a topographic measurement method; dividing a resulting data into a discrete number of individual height values equaling a number of contacts and taken at a position where said contacts will be positioned; fabricating said LGA in two steps: first: forming a rectangular insulated carrier sheet having a plurality of side edges and a continuous planar surface, an upper first surface and a lower second surface, wherein on each said surface, a two-dimensional x-y array of individual solid contacts spans from any given side of said upper first surface and from any given side of said lower second surface of said substantially rectangular insulated planar carrier sheet to a diametrically opposite side; said x-y array of interposer contacts on said upper first surface and said interposer contacts on said lower second surface being secured in and extending from said substantially rectangular insulated carrier sheet each said contact secured in said upper first surface array of contacts, and each said contact secured in said lower second surface array of contacts having the same or various different z dimension heights throughout said array; each said same or various different z dimension heights; and second adjusting the z height of each contact below said carrier sheet to correspond to the measured average height deviation of said first electronic device from a reference plane at an identical grid point and adjusting the z height of each contact above said carrier sheet to correspond to the measured average height deviation of said second electronic device from a reference plane at an identical grid point sandwiching said interposer between said first and second electronic devices with said opposing sides in contact with respective mating surfaces.