Patent ID: 6949762
Filing Date: 2005-09-27
Classification: C08G,H01B,H01L

Abstract:
1. A thin film transistor device comprised of a substrate, a gate electrode, a gate dielectric layer, a source electrode and a drain electrode, and in contact with the source/drain electrodes and the gate dielectric layer, a semiconductor layer comprised of a polythiophene represented by Formula (III) wherein A is a long side chain containing at least about 5 carbon atoms; B is hydrogen or a short side chain containing from about 1 to about 4 carbon atoms; and D is a divalent segment; a and c represent the number of A-substituted thienylenes, wherein a is at least 2; b is the number of B-substituted thienylene units and is from 1 to about 6; d is 1; c and m are independently 1,2, or 3; and n is the degree of polymerization or the number of the monomer segments in the polythiophene, and wherein the polythiophene has an M n between about 4,000 and about 50,000.