A method of attaching a detector onto a substrate that has an array of electrically conducting pads is provided, together with the resulting detector assembly. The method includes pouring a non-conductive adhesive material over a substrate surface, allowing the adhesive to settle between the conducting pads to form dams around the conducting pads, applying a conductive adhesive material onto the conducting pads of the substrate, and placing a surface of the detector on the substrate surface over the conducting and non-conducting adhesives to thereby attach the surface of the detector to the surface of the substrate.