Patent ID: 8153512

Claim:
A method for patterning a functional material on a substrate comprising: depositing a liquid of a first composition on a first region of the substrate to form a first body of a first resist material; subsequently depositing a liquid of a second composition on a second region of the substrate to form a second body of resist material, adjacent the first region; and transferring the pattern defined in the resist material into the functional material, wherein the first composition, the second composition and the substrate are such that the liquid of the second composition is repelled from the first region and dries in such a way that the first resist material is spaced from the second resist material, wherein the step of transferring the pattern defined in the resist material into the functional material comprises a dry etching process or a wet etching process using a bath of etchant to pattern the functional material, wherein said functional material is another resist material, and wherein the step of etching said another resist material produces an overhanging profile of said first and second resist material on top of said another resist material.