Patent ID: 8038902

Claim:
A composition comprising: at least one liquid crystal; and at least one non-planar aromatic compound represented by the following formula (1): Ar 1 —X—Ar 2 (1) wherein Ar 1 is a phenyl moiety substituted with two or more substituents independently selected from the group consisting of F, Cl, Br, I, —CF 3 , —CN, —NO 2 , —NCS, and —SCN, and wherein the phenyl moiety of Ar 1 has a substitution pattern selected from the group consisting of: 2- and 3-position; 2- and 4-position; 2- and 5-position; 2- and 6-position; 2-, 3- and 4-position; 2-, 3- and 5-position; 2-, 3- and 6-position; 2-, 4- and 5-position; 2-, 4- and 6-position; 3-, 4-, and 5-position; 2-, 3-, 4- and 5-position; 2-, 4-, 5- and 6-position; 2-, 3-, 5- and 6-position; and 2-, 3-, 4-, 5- and 6-position; wherein X is selected from the group consisting of O, CO and S; and wherein Ar 2 is a phenyl moiety substituted with at least one substituent independently selected from the group consisting of —(CH 2 ) s CH 3 and —O(CH 2 ) S CH 3 , wherein s is an integer of from 0 to 22, and wherein the phenyl moiety of Ar 2 is at least substituted with the substituent at the 4-position.