Patent ID: 6911301

Claim:
A method of forming aligned structures with a radiation-sensitive material, comprising, in the following sequential order: providing a substrate having a radiation-sensitive material thereover; the substrate and radiation-sensitive material having at least three defined regions; the at least three defined regions including a first region, a second region and a third region; exposing the first region of the radiation-sensitive material to a first dose of actinic radiation; exposing second region of the radiation-sensitive material to a second dose of actinic radiation less than the first dose; and leaving the third region of the radiation-sensitive material not exposed to either the first or second dose of the actinic radiation; developing the radiation-sensitive material; the developing removing the radiation-sensitive material from over the first region of the substrate, and leaving the radiation sensitive material over the second and third regions of the substrate; treating the first region of the substrate; exposing the second and third regions of the radiation-sensitive material to a blanket dose of actinic radiation; developing the radiation-sensitive material; the developing removing the radiation-sensitive material from over the second region of the substrate, and leaving the radiation sensitive material over the third region of the substrate; and while the radiation-sensitive material remains over the third region of the substrate, treating the second region of the substrate.