Patent ID: 7968157

Claim:
A discotic nematic material comprising a compound of the following formula (II): wherein Y 11 and Y 12 each independently represents the following formula (II-A), (II-B) or (II-C): wherein A 11 , A 12 , A 13 , A 14 , A 15 and A 16 each independently represents a methine group or a nitrogen atom; X 1 represents an oxygen atom, a sulfur atom, a methylene group or an imino group; L 11 represents —O—, —O—CO—, —CO—O—, —O—CO—O—, —S—, —NH—, —SO 2 —, —CH 2 —, —CH═CH— or —C≡C—, L 12 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 group has a hydrogen atom, the hydrogen atom may be substituted with a substituent; Q 11 represents a polymerizable group or a hydrogen atom; wherein A 21 , A 22 , A 23 , A 24 , A 25 and A 26 each independently represents a methine group or a nitrogen atom; X 2 represents an oxygen atom, a sulfur atom, a methylene group or an imino group; L 21 represents —O—, —O—CO—, —CO—O—, —O—CO—O—, —S—, —NH—, —SO 2 —, —CH 2 —, —CH═CH— or —C≡C—, L 22 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 group has a hydrogen atom, the hydrogen atom may be substituted with a substituent; Q 21 represents a polymerizable group or a hydrogen atom; wherein A 31 , A 32 , A 33 , A 34 , A 35 and A 36 each independently represents a methine group or a nitrogen atom; X 3 represents an oxygen atom, a sulfur atom, a methylene group or an imino group; L 31 represents —O—, —O—CO—, —CO—O—, —O—CO—O—, —S—, —NH—, —SO 2 —, —CH 2 —, —CH═CH— or —C≡C—, L 32 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 group has a hydrogen atom, the hydrogen atom may be substituted with a substituent; Q 31 represents a polymerizable group or a hydrogen atom.