Patent ID: 6132644
Filing Date: 2000-10-17
Classification: H01B,H01L

Abstract:
A composition comprising:an admixture of an energy sensitive material and an electrically conductive material;said electrically conductive material contains acid functionality;said electrically conductive material has a predetermined pH provided by acid neutralizing functionality;said pH is predetermined to be in the range from about 1 to about 7;said acid neutralizing functionality is selected from the group consisting of tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrabutylammonium hydroxide, triethylamine, pyridine, t-butoxide, morpholine, pyrrolidinone, potassium hydroxide, sodium hydroxide, lithium hydroxide, triphenylsulfonium hydroxide, primary, secondary and tertiary amines, proton sponge, sodium hydride;said electrically conductive material is selected from the group consisting of substituted and unsubstituted polyparaphenylenes, polyparaphenylevevinylenes, polyanilines, polyazines, polythiophenes, poly-p-phenylene sulfides, polyfuranes, polypyrroles, polyselenophenes, polyacetylenes, combinations thereof and blends thereof with other polymers and copolymers of the monomers thereof;said energy sensitive material is selected from the group consisting of hydroxystyrene/t-butylmethacrylate copolymers and terpolymers, hydroxystyrene/t-butylmethacrylate copolymers with styrene based monomers and methylmethacrylate based monomers, protected hydroxystyrene based polymers and copolymers with styrene and methylmethacrylate based monomers, cross-linkable hydroxystyrene based polymers, methacrylateacrylate polymers and derivatives selected from the group consisting of polymethylmethacrylate, a-chloromethacrylate based polymers or copolymers with other methacrylate monomers or styrene or a-methylstyrene monomers, silicon containing resists, polybutanesulfones and derivatives, organometallic resists, novolak containing resists and novolak/diazoquinone resists.