Patent ID: 7989146
Filing Date: 2011-08-02
Classification: H01L,H05K

Abstract:
1. A method for producing a patterned material for electronic or photonic circuits, comprising: providing a substrate; coating the substrate with a polymer layer; coating a thermal resist solution over the polymer layer to form a thermal resist layer, wherein the polymer layer is substantially immiscible in the thermal resist solution; exposing selective areas of the thermal resist layer, corresponding to the desired image pattern using infrared light; removing portions of the thermal resist layer corresponding to a desired image pattern using developer; removing the polymer layer where the thermal resist layer has been previously removed and undercutting a portion of the remaining thermal resist layer by an etching process wherein the step of removing the polymer is accomplished using a plasma etch; depositing a metal semiconductor or insulator material using a substantially anisotropic process; removing the remaining thermal resist layer and any overlying material with a solvent for the polymer or thermal resist layers leaving the material in a desired pattern; and wherein the polymer layer includes infrared absorbing material.