Contact grid array system

Abstract

A scalable, low cost, reliable, compliant, low profile, low insertion force, high-density, separable and reconnectable connector for high speed, high performance electronic circuitry and semiconductors. The electrical connector can be used to make, for example, electrical connections from components such as a Printed Circuit Board (PCB) to another PCB, MPU, NPU, or other semiconductor device. A normalized working range for an array of elastic contacts of the interposer can be about 0.2 to 1.0. A reversible normalized working range is maintained through multiple connections and reconnections using a highly elastic material for the contact arms. In one aspect, a first electrical component having a first array pitch can be connected to a second electrical component having a second array pitch.

1 . An electrical interposer having an array of elastic contacts disposed on an interposer substrate, the array of contacts coupled using conductive vias disposed within an insulating substrate of the interposer and extending from a first surface to a second surface of the insulating substrate; 
 each elastic contact comprising a base portion in electrical contact with a respective conductive via and a contact arm having a longitudinal dimension significantly greater than a diameter of the conductive via and having a distal portion extending above the first surface and substantially over a planar portion of the first surface,    the base portion and contact arm comprising a unitary portion of a spring sheet material patterned and formed in three dimensions, and annealed to form an elastic precipitation hardened microstructure, the elastic contact joined to the interposer substrate using an adhesive layer.