Patent ID: 7722935

Claim:
A liquid crystal panel comprising a retardation film comprising a modified polymer; wherein the modified polymer has, as a main chain thereof, a polyvinyl alcohol skeleton or a polyethylene vinyl alcohol skeleton, and has a portion where at least one chemical group selected from a group consisting of an aromatic carbonyl group represented by the following formula (1) or (2), an aryl-substituted lower alkylcarbonyl group represented by Ar—(CH 2 ) n —CO— (Ar is an aromatic ring and n is an integer of 1 to 2), and an unsaturated aliphatic carbonyl group represented by any one of the following formulae (5) to (7), is bonded to an oxygen atom in a side chain of the skeleton, wherein in formula (1), R 1 , R 2 , R 3 , R 4 and R 5 may be the same or different, and each represents a hydrogen atom or halogen atom, or a hydroxyl, methyl, ethyl, halogenated methyl, halogenated ethyl or nitro (—NO 2 ) group; in formula (2), R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 may be the same or different, and each represents a hydrogen atom or halogen atom, or a hydroxyl, methyl, ethyl, halogenated methyl, halogenated ethyl or nitro (—NO 2 ) group, wherein in formulae (5) to (7), each of R 13 , R 14 and R 15 is a hydrogen atom or halogen atom, or a hydroxyl, methyl, ethyl, halogenated methyl, halogenated ethyl or nitro (—NO 2 ) group.