| abstract |
PROBLEM TO BE SOLVED: To provide a retardation plate and a circularly polarizing plate which can be widened and thinned and have few in-plane defects. The rod-like liquid crystal compound of the first and second optically anisotropic layers has a transparent support, first and second optically anisotropic layers containing a horizontally oriented rod-like liquid crystal compound. at least one of a compound represented by the formula Q 1 -L 1 -A 1 -L 3 -M-L 4 -A 2 -L 2 -Q 2, a measurement wavelength of the first optical anisotropic layer The phase difference at 550 nm is substantially π, the phase difference at the measurement wavelength 550 nm of the second optical anisotropic layer is substantially π / 2, and the surface of the second optical anisotropic layer A retardation plate in which the angle between the slow axis in the first optical anisotropic layer and the slow axis in the plane of the first optically anisotropic layer is substantially 60 °, and a circle having the retardation plate and a 45 ° polarizing film It is a polarizing plate (wherein Q 1 and Q 2 are polymerizable groups, L 1 to L 4 are single bonds or divalent linking groups, A 1 and A 2 are spacer groups, M Represents a mesogenic group). |