Mesomorphic compound, liquid crystal composition containing the compound ...

[21] Appl. No.: 297,777

[22] Filed: Aug. 30,1994

[30] Foreign Application Priority Data

Aug. 31, 1993 [JP] Japan 5-237213

Aug. 26, 1994 [JP] Japan 6-224046

[51] Int. CI.6 C09K 19/34; C09K 19/32;

C09K 19/30; G02F 1/13

[52] U.S. CI 252/299.61; 252/299.62;

252/299.63; 359/103; 548/122; 548/125; 548/217; 548/218; 549/283; 549/369; 549/429; 549/295; 544/146; 544/128; 544/353; 544/298;

534/659; 585/27

[58] Field of Search 252/299.61,299.62;

548/122, 125, 217, 218, 219, 220, 136; 544/146, 128, 353, 298; 549/283, 429, 448, 263, 273, 295, 369; 534/659; 585/27

[56] References Cited

U.S. PATENT DOCUMENTS

4,367,924 1/1983 Clark et al 359/53 X

4,834,905 5/1989 Eidenschenk 252/299.61

5,002,694 3/1991 Wachtler et al 252/299.61

5,075,030 12/1991 Togano et al 252/299.61

5,091,109 2/1992 Takiguchi et al 252/299.61

5,118,441 6/1992 Mori et al 252/299.61

5,176,845 1/1993 Yamadaetal 252/299.61

5,190,690 3/1993 Takiguchi et al 252/299.61

A mesomorphic compound of the formula (I) according to claim 1 characterized by having at least one cyclic group selected from (5 class including, e.g., thiazole-2,5-diyl, benzoxazole-2,5-diyl, indan-2,5-diyl, and quinoxaline-2,6-diyl and also having a linkage of Y'-^CHj-^Y2, where Y1 and Y2 are —CH2—, —O— —COO— or —OCO— and m is 1-16, is suitable as a component for a liquid crystal composition providing improved response characteristics. A liquid crystal device is constituted by disposing the liquid crystal composition between a pair of substrates. The liquid crystal device is used as a display panel constituting a liquid crystal apparatus providing good display characteristics.

25 Claims, 4 Drawing Sheets