Patent ID: 8026559
Filing Date: 2011-09-27
Classification: G01N,H01L

Abstract:
1. A biosensor device, comprising: an interconnect structure; a first semiconductor layer formed over the interconnect structure; a plurality of detection elements formed in the first semiconductor layer; an optical filter layer formed over and physically contacting the first semiconductor layer; a second semiconductor layer formed over the optical filter layer, having opposing first and second surfaces, wherein the first surface physically contacts the optical filter layer; a plurality of isolation walls formed over the second semiconductor layer from the second surface thereof, defining a plurality of micro-wells over the second semiconductor layer, wherein the isolation walls and the second semiconductor layer comprises the same material, and the micro-wells are correspondingly arranged with the detection elements; an immobilization layer formed over the second semiconductor layer exposed by the micro-wells; and a plurality of capture molecules formed over the immobilization layer in the mirco-wells.