Optical laminate and optical display apparatus comprising the same

An optical laminate comprising:

• a polarizer;
• and
• a retardation layer stacked on a light incidence surface of the polarizer,
• wherein the retardation layer comprises a positive C layer, the positive C layer having an in-plane retardation of 0 nm to 30 nm and an out-of-plane retardation of −25 nm to −15 nm at a wavelength of 550 nm, and
• the in-plane retardation of the positive C layer at a wavelength of 550 nm and an absolute value of a tilted angle of a slow axis of the positive C layer with respect to a light absorption axis of the polarizer satisfy the following Relation 1:
• 0°≤Y≤a×Xb,
• where X is the in-plane retardation of the positive C layer at a wavelength of 550 nm (unit:
• nm),
• Y is the absolute value of the tilted angle of the slow axis of the positive C layer with respect to the light absorption axis of the polarizer (unit:
• °),
• a is 13.666, and
• b is −1.056, and
• wherein the slow axis of the positive C layer is tilted at an angle of −14° to −1° or +1° to +14° with respect to a machine direction (MD) of the positive C layer, and the positive C layer is a stretched film and a stretched direction of the positive C layer is the machine direction (MD) of the positive C layer.