Patent ID: 7916251

Claim:
A laminated optical film comprising: a first optical anisotropic layer, a second optical anisotropic layer, and a third optical anisotropic layer, wherein Rth 1 of the first optical anisotropic layer, and Rth 2 of the second optical anisotropic layer satisfy one of Relationships (1) and (2), and ΔRth1≧0 nm and ΔRth2≦0 nm (1) ΔRth1<0 nm and ΔRth2>0 nm (2), wherein the third optical anisotropic layer is formed of a hybrid aligned discotic liquid crystal layer and when the third optical anisotropic layer is formed, a rubbing direction is angled by 40° to 50° with respect to the slow phase axis of the first optical anisotropic layer and the slow phase axis of the second optical anisotropic layer, and wherein a retardation value Rth of the laminated optical film as a whole in its thickness direction satisfies 50 nm≦Rth≦500 nm, where ΔRth 1 denotes a value obtained by calculating the expression Rth 1 (at a temperature of 50° C.)−Rth 1 (at a temperature of 25° C.) concerning the first optical anisotropic layer, and ΔRth 2 denotes a value obtained by calculating the expression Rth 2 (at a temperature of 50° C.)−Rth 2 (at a temperature of 25° C.) concerning the second optical anisotropic layer.