Patent ID: 8039832

Claim:
A liquid crystalline organic semiconductor material which is a liquid crystal composition having a smectic liquid crystal phase, has a distyrylbenzene structure represented by general formula (1) below, and, when heated to a temperature range in which a smectic liquid crystal phase is formed followed by being cooled, takes on a solid state as a result of phase transition from the smectic phase, wherein R 1 represents a straight-chain alkyl group having 3 to 18 carbon atoms: and R 2 represents an alkoxy group having 2 to 18 carbon atoms, or a group represented by general formula (2): wherein R 3 represents a hydrogen atom or a methyl group; and B represents —(CH 2 ) m —, —(CH 2 ) m —O—, —CO—O—(CH 2 ) m , —CO—O—(CH 2 ) m —O—, —C 6 H 4 —CH 2 —O— or —CO—; wherein m is 1 to 18.