Patent ID: 9638999
Date: 2017-05-02
CPC Classifications: G03F,Y10T

Claim:
1. A method of forming a microelectronic structure comprising: (a) providing a substrate having a surface; (b) forming a crosslinked first anti-reflective coating layer on said surface, wherein said first anti-reflective coating layer has a k value at a wavelength of exposing radiation of 193 nm of from about 0.2 to 0.65; and (c) forming a crosslinked second anti-reflective coating layer on said first anti-reflective coating layer, wherein said second anti-reflective coating layer has a k value at a wavelength of exposing radiation of 193 nm of from about 0.1 to about 0.45, said first and second anti-reflective coating layers being photosensitive and wet-developable in a photoresist developer, and said second anti-reflective coating layer k value being different from said first anti-reflective coating layer k value by at least about 0.05.