Patent ID: 6797451
Filing Date: 2004-09-28
Classification: C08F,G03F,Y10S

Abstract:
A composition for reducing the light reflection in a photoresist pattern formation comprising:(a) a polymer of Chemical Formula 1, wherein each of R1and R2 is independently hydrogen, hydroxy, â€”CH2OH or â€”(CH2)nCH3; R3 is wherein R4 is hydrogen, â€”OCH3, â€”(CH2)nCH3, â€”(CH2)nâ€”OH, and R5 is â€”COOâ€” or â€”(CH2)nCH2â€”;n is an integer from 0 to 3; and x and y represent the relative amounts of each monomer, wherein the mole ratio of x:y is 0.0-0.9:0.1-1.0; provided that when x=0, then R3 is and R4 is (b) a thermal acid generator selected from the group consisting of: (c) an organic solvent; and optionally (d) a polymer having hydroxyl group as a functional group.