Fluoroalkoxybenzene derivatives having ether bond, liquid-crystal composition, and liquid-crystal display element

• Main Authors: Tamura, Norio, Takeuchi, Hiroyuki, Matsui, Shuichi, Miyazawa, Kazutoshi, Hisatsune, Yasusuke, Takeshita, Fusayuki, Nakagawa, Etsuo
• Format: Patent
• Language: English
• Published: 16.04.2002

The present invention relates to a liquid crystalline compound and a liquid crystal composition. In more detail, the invention relates to a fluoroalkoxybenzene derivative having an ether linkage and being preferable as a component of liquid crystal composition, a liquid crystal composition comprising the derivative, and a liquid crystal display element fabricated by using the liquid crystal composition. Liquid crystalline compounds superior in having an eminent dielectric anisotropy, being stable against environment and having improved miscibility with other liquid crystalline compounds, as well as a liquid crystal composition with driving-ability at a low voltage and responsibility at a high-speed comprising the compounds as a constituting component, and a liquid crystal display element comprising the composition are provided, said compounds are fluoroalkoxybenzene derivatives expressed by the general formula (1) wherein A, Aand Aeach independently denote trans-1,4-cyclohexylene,1,4-phenylene or so; B, Band Beach independently denote a single bond, 1,2-ethylene or so; R denotes an alkyl group having 1 to 15 carbon atoms optionally substitutable with a halogen atom(s); Rf denotes a fluoroalkyl group having 1 to 3 carbon; k, m, and n each independently denote 0 or 1; with the proviso that when k=0 is a case, then one of B, Band Bis a methyleneoxy bond or so, and that when m+n 1 is a case, then dependency of A, Aand Ais partly restricted and content of Rf is partly limited when Bor/and Band Bare all single bonds.