发明授权
US5932138A Benzene derivatives, and liquid-crystalline medium 失效
苯衍生物和液晶介质

Benzene derivatives, and liquid-crystalline medium
摘要:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which R, A.sup.1, A.sup.2, Z.sup.1, Z.sup.2, X, L and m are as defined in Claim 1.
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