Patent ID: 7816068
Filing Date: 2010-10-19
Classification: G03F,G06F

Abstract:
1. A method of forming a patterned material layer on a substrate, the method comprising: providing a substrate having a material layer on a surface thereof; forming a planarizing underlayer over the material layer, said planarizing underlayer is formed by reacting an underlayer precursor composition, wherein said underlayer precursor composition comprises a polymer containing a monomer unit having the following structure: wherein n is an integer; depositing a photoresist composition on the substrate to form a photoresist layer on the planarizing underlayer; pattern-wise exposing portions of the photoresist layer to an imaging radiation; selectively removing the exposed portions of the photoresist layer to expose portions of the underlying planarizing underlayer; selectively removing the exposed portions of the planarizing underlayer to expose portions of the material layer, thereby forming a patterned planarizing underlayer on the material layer; and transferring the pattern in the planarizing underlayer to the material layer.