Patent ID: 6660392
Filing Date: 2003-12-09
Classification: G02B,Y10T

Abstract:
An anti-reflection film comprising an inorganic anti-reflection layer comprising a silicon dioxide-based inorganic layer and having a monolayer structure or a plurallayer structure, and a stain-resistant layer provided as a surface layer, said stain-resistant layer comprising a cured fluorine-containing silazane block polymer represented by formula (1):[(RfQ)aSi(R1)b(NR2)4âˆ’aâˆ’b/2]1Â·[(RfQ)cSi(R1)dO4âˆ’câˆ’d/2]mÂ·[(RfQ)eSi(R1)f(NR2)g/2Oh/2]nâ€ƒâ€ƒ(1) wherein R1 are the same or different and each is a hydrogen atom, or an unsubstituted or substituted monovalent hydrocarbon group; R2 are the same or different and each is a hydrogen atom or an alkyl group; Rf are the same or different and each is a perfluoroalkyl group with 1-20 carbon atoms or perfluoroalkylether group with 2-35 carbon atoms; Q is a divalent organic group with 2-5 carbon atoms; in each of the first structural units, independently, a is an integer of 1-3, and b is an integer of 0-2, wherein a+b is an integer of 1-3; in each of the second structural units, independently, c is an integer of 0-2, and d is an integer of 1-3, wherein c+d is an integer of 1-3; in each of the third structural units, e and f independently is an integer of 0-2, and g and h each is an integer of 1 or 2, wherein e+f+g+h=4; and 1, m and n are each a number of 1 or greater.