Patent ID: 6127203
Filing Date: 2000-10-03
Classification: H01L

Abstract:
A method of forming a focal plane array structure, said method comprising steps:(a) growing a MCT layer having a top side and bottom side on a carrier material;(b) depositing a passivation layer on said top side of said MCT layer mounted to said carrier;(c) mounting with a thin layer of thermoplastic adhesive said MCT to a read out integrated circuit with said first passivation layer facing said readout integrated circuit;(d) removing said carrier material to expose said bottom side of said MCT layer;(e) polishing said bottom side of said MCT subsequent to removing said carrier material from said MCT; and(f) depositing a second passivation layer to said bottom side of said MCT layer to form a sandwiched MCT such that both said top side and bottom side of said MCT layer is passivated with said first and said second passivation layers respectively; and(g) annealing said sandwiched MCT to interdiffuse said first and second passivation layers with said MCT layer, wherein said thermoplastic adhesive is a material which melts when heated above a softening temperature, wherein said layer of thermoplastic adhesive is from 1-2 microns thick.