Patent ID: 8025933

Claim:
A retardation plate comprising at least one optically anisotropic layer, wherein at least one of said optically anisotropic layers is formed from a composition containing a liquid crystalline compound represented by the following formula (DI): wherein Y 11 , Y 12 and Y 13 each independently represent a methine group or a nitrogen atom; L 1 , L 2 and L 3 each independently represent a single bond or a divalent linking group; H 1 , H 2 and H 3 each independently represent a group represented by the following formula (DI-A) or (DI-B); R 1 , R 2 and R 3 each independently represent a group represented by the following formula (DI-R): wherein YA 1 and YA 2 each independently represent a methine group or a nitrogen atom; XA represents an oxygen atom, a sulfur atom, a methylene group or an imino group; * indicates the position at which the group of formula (DI-A) bonds to any of L 1 to L 3 in formula (DI); ** indicates the position at which the group of formula (DI-A) bonds to any of R 1 to R 3 in formula (DI), wherein YB 1 and YB 2 each independently represent a methine group or a nitrogen atom; XB represents an oxygen atom, a sulfur atom, a methylene group or an imino group; * indicates the position at which the group of formula (DI-B) bonds to any of L 1 to L 3 in formula (DI); ** indicates the position at which the group of formula (DI-B) bonds to any of R 1 to R 3 in formula (DI), *-(-L 21 -Q 2 ) n1 -L 22 -L 23 -Q 1 (DI-R) wherein * indicates the position at which the group of formula (DI-R) bonds to any of H 1 to H 3 in formula (DI); L 21 represents a single bond or a divalent linking group; Q 2 represents a divalent group having at least one cyclic structure; n1 indicates an integer of from 0 to 4; L 22 represents **—O—, **—O—CO—, **—CO—O—, **—O—CO—O—, **—S—, **—NH—, **—SO 2 —, **—CH 2 —, **—CH═CH— or **—C≡C—; ** indicates the position at which the group bonds to Q 2 ; L 23 represents a divalent linking group selected from —O—, —S—, —C(═O)—, —SO 2 —, —NH—, —CH 2 —, —CH═CH— and —C≡C— and their combinations, and when the divalent linking group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent; Q 1 represents a polymerizable group or a hydrogen atom, and when the polymerizable group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent; when n1 is 2 or more, then plural (-L 21 -Q 2 )'s may be the same or different.