Abstract: A polymer film comprising at least one compound represented by formula (I) is disclosed. A1 and A2 each independently represent a group having a Hammett's ?p value of 0.2 or more, or bond each other to form a cyclic active methylene structure; and X1 and X2 each independently represent a hydrogen atom, aryl group, hetero-cyclic group, cyano, N-alkyl- or N-aryl-carbamoyl, or alkyl- or aryl-oxycarbonyl, or bond each other to form a saturated ring in which nitrogen and carbon atoms are embedded, and the group and ring may have at least one substituent.

Abstract: A polymer film, containing a merocyanine compound having ?max of not longer than 375 nm, and a compound represented by formula (II), which is different from said at least one merocyanine compound, is disclosed. In the formula, R1 and R2 each independently represent a hydrogen atom, alkyl group, aryl group, heterocyclic group, cyano, N-alkyl- or N-aryl carbamoyl group, aryloxy carbonyl group or —CH2COOR5, or R1 and R2 bind to each other to form a ring containing a nitrogen atom; R5 represents an alkyl group, aryl group or a heterocyclic group; R3 and R4 each independently represent a substituent having a Hammett substituent constant ?p of equal to or more than 0.2, or R3 and R4 bind to each other to form a cyclic active methylene compound structure.

Abstract: An optical compensatory film of a laminated structure comprising a first optically anisotropic layer having an Re(550) of 20 to 100 nm wherein retardation at a wavelength of 550 nm is never 0 nm along any direction and the direction along which the absolute value of retardation at a wavelength of 550 nm reaches minimum does not exist along the normal direction of the layer or on the in-plane of the layer; and a second optically anisotropic layer having an Re(550) of 20 to 150 nm and an Rth(550) of 40 to 110 nm with Re(450) Re(550)<?3 nm and Rth(450)?Rth(550)>3 nm.

Abstract: A process of producing a cellulose acylate film is disclosed. The process comprises a forming step of forming a web of a fluid, comprising a cellulose acylate, aromatic group-containing oligomer and solvent, by casting the fluid onto a support, a stretching step of stretching the web, thereby to align molecules of the aromatic group-containing oligomer along the stretching direction, and a heat-treatment step of subjecting the stretched web to a heat treatment, thereby to at least increase the alignment degree of molecules of the aromatic group-containing oligomer.

Abstract: A polymer film comprising at least one polymer as the main ingredient thereof, and at least one compound that satisfies relational formulae (1) and (2), in an amount of from 0.2 to 20% by mass of said at least polymer is disclosed. ?max indicates the maximum absorption wavelength (unit: nm) of the compound, ?1/2 (?max<?1/2) indicates the wavelength at which the absorption intensity at ?max is ½.

Abstract: A polymer film comprising at least one compound represented by formula (I) is disclosed. A1 and A2 each independently represent a group having a Hammett's ?p value of 0.2 or more, or bond each other to form a cyclic active methylene structure; and X1 and X2 each independently represent a hydrogen atom, aryl group, hetero-cyclic group, cyano, N-alkyl- or N-aryl-carbamoyl, or alkyl- or aryl-oxycarbonyl, or bond each other to form a saturated ring in which nitrogen and carbon atoms are embedded, and the group and ring may have at least one substituent.

Abstract: An optical compensatory film of a laminated structure comprising a first optically anisotropic layer having an Re(550) of 20 to 100 nm wherein retardation at a wavelength of 550 nm is never 0 nm along any direction and the direction along which the absolute value of retardation at a wavelength of 550 nm reaches minimum does not exist along the normal direction of the layer or on the in-plane of the layer; and a second optically anisotropic layer having an Re(550) of 20 to 150 nm and an Rth(550) of 40 to 110 nm with Re(450) Re(550)<?3 nm and Rth(450)?Rth(550)>3 nm.