Patent ID: 8673403
Filing Date: 2014-03-18
Classification: H01L

Abstract:
1. A method of forming a pattern of a polymer film comprising: applying a first polymer material, which has hydrophobicity, on a substrate to form a first polymer film pattern, the first polymer film pattern having a linear shape with a width within a range of tens of nanometers to hundreds of micrometers; applying a second polymer material, which has a conductive material, on the substrate on which the first polymer film pattern is formed, to cover at least a portion of the first polymer film pattern, wherein the second polymer material has a predetermined difference in surface energy from the first polymer material; dewetting the second polymer material covering the first polymer film pattern to move toward a substrate region at which the first polymer film pattern is not formed; annealing the substrate in a state in which the second polymer material has moved to the extent that the second polymer material does not cover the first polymer film pattern; and evaporating an organic solvent included in the second polymer material through annealing to form a second polymer film pattern on the substrate, wherein: the first polymer film pattern, taken from a plan view, does not have any opening; and the first and second polymer film patterns are disposed on the substrate, such that a top surface of the substrate defines a first region covered by the first polymer film pattern, a second region covered by the second polymer film pattern, and a third region not covered by the first polymer film pattern or the second polymer film pattern, the third region enclosing both of the first and second regions therewithin, wherein the applying of the first polymer material further comprises: making a solution of the first polymer material in droplets; and ejecting the droplets onto the substrate using a near-field electrospinning method to form the first polymer film pattern.