Patent ID: 8127674

Claim:
A method of forming at least one of a semiconductor layer, a source electrode, a drain electrode, and a gate electrode in a thin film transistor on a substrate comprising: forming a charged layer on a substrate; forming a plurality of charged zones in a predetermined portion of the charged layer using a stamp, the stamp comprising: a base substrate, a metal layer having a plurality of convex portions on the base substrate, and a polymer layer formed on the metal layer along the contour of the convex portions of the metal layer, wherein the charged zones respectively correspond to the convex portions, wherein the convex portions covered by the polymer layer indirectly contact the charged zones through the polymer layer; forming patterns of self-assembled nano material directly on the charged zones, wherein the patterns of self-assembled nano material act as at least one of a semiconductor layer, a source electrode, a drain electrode, and a gate electrode in a thin film transistor, wherein the step of forming the charged zones in a predetermined portion of the charged layer comprises: directly contacting the polymer layer with the charged layer; applying a predetermined voltage between the metal layer and the substrate; and detaching the stamp from the substrate.