Abstract:
PROBLEM TO BE SOLVED: To provide novel, wet developable anti-reflective coating compositions; and to provide methods of using those compositions.SOLUTION: The compositions comprise a polymer and/or oligomer having acid functional groups and dissolved in a solvent system along with a crosslinker and a photoacid generator. The acid functional group is a carboxylic acid, while the crosslinker is a vinyl ether crosslinker. In use, the compositions are applied to a substrate and thermally crosslinked. Upon exposure to light, the cured compositions will decrosslink, rendering them soluble in typical photoresist developing solutions (e.g., alkaline developers).
Abstract:
Novel, poison-blocking compositions and methods of using those compositions to form poison-blocking layers are provided. The compositions comprise a typical composition used in micralithographic processes, but with a poison-blocking additive included in that composition. The preferred additive is a compound comprising one or more blocked isocyanates. Upon heating to certain temperatures, the blocking group is released from the isocyanatc, leaving behind a moiety that is highly reactive with the poisonous amines generated by typical dielectric layers.
Abstract:
Novel, wet developable anti-reflective coating compositions and methods of using those compositions are provided. The compositions comprise a polymer and/or oligomer having acid functional groups and dissolved in a solvent system along with a crosslinker and a photoacid generator. The preferred acid functional group is a carboxylic acid, while the preferred crosslinker is a vinyl ether crosslinker. In use, the compositions are applied to a substrate and thermally crosslinked. Upon exposure to light, the cured compositions will decrosslink, rendering them soluble in typical photoresist developing solutions (e.g., alkaline developers).