. . "he formula Cn H2n+1 or a substituent group selected from the substituent groups mentioned in Examplification 1, in the case of a discotic liquid crystallline compound, at least one of R1, R2, R3, R4, R5 and R6 is an optically active substituent mentioned in Examplification 1, and n is an integer of 1-18, preferably 3-14. ##STR23## wherein R1, R2, R3, and R4, R5 and R6 are independently a linear or" . . . . .