Patent ID: 8519540

Claim:
A self-aligned interconnect structure comprising: a patterned dielectric cap located on a surface of a substrate; a patterned antireflective coating located on said patterned dielectric cap; a first patterned and cured low-k material located on a surface of said patterned antireflective coating, wherein the first patterned and cured low-k material includes at least one first interconnect pattern therein and said at least one first interconnect pattern is located atop and is in communication with an opening located within both the patterned dielectric cap and the patterned antireflective coating; a second patterned and cured low-k material having at least one second interconnect pattern that is different from the at least one first interconnect pattern located directly on an upper horizontal surface of the first patterned and cured low k material, wherein a portion of the second patterned and cured low-k material partially fills the at least one first interconnect pattern within the first patterned and cured low-k material and wherein said portion of the second patterned and cured low-k material that partially fills the at least one first interconnect pattern has an upper surface that is coplanar with the upper horizontal surface of the first patterned and cured low-k material and wherein said first patterned and cured low-k material, said second patterned and cured low-k material and said portion of the second patterned and low-k material are derived from a functionalized polymeric material including at least one acid-sensitive functional group; and a conductive material filling the at least one first interconnect pattern, the at least one second interconnect pattern and the opening present in the patterned antireflective coating and the patterned dielectric cap.