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Twisted pneumatic or supertwisted pneumatic liquid crystal display contains a pneumatic liquid crystal mixture comprising compounds of different dielectric anisotropy and an optically active component
Twisted pneumatic or supertwisted pneumatic liquid crystal display contains a pneumatic liquid crystal mixture comprising compounds of different dielectric anisotropy and an optically active component
Twisted pneumatic or supertwisted pneumatic liquid crystal display contains a pneumatic liquid crystal mixture comprising compounds of different dielectric anisotropy and an optically active component to give low switching times and good contrast and angle dependence. Twisted pneumatic or supertwisted pneumatic liquid crystal display comprises two support plates to form a cell, a pneumatic liquid crystal mixture with positive dielectric anisotropy, electrodes with orientation layers, angle of incidence between the length axis of the molecules on the surface of the support plates and the support plates of 0-30 deg , a twisting angle of 22.5-600 deg and a pneumatic liquid crystal mixture comprising 20-90 wt.% liquid crystal component (A) containing compounds of formula (IA) and (IB) and of dielectric anisotropy above +1.5, 10-80 wt.% liquid crystal component (B) comprising a compound(s) of dielectric anisotropy between -1.5 and +1.5, 0-20 wt.% liquid crystal component (C) comprising a compound(s) of dielectric anisotropy below -1.5 and an optically active component (D) used in such an amount that the ratio of film thickness and natural pitch of the Chiral pneumatic liquid crystal mixture is 0.2-1.3: R3 = 2-7C alkyl; R1 and R2 = 1-12C alkyl, alkoxy or alkenyl optionally substituted via O, CH=CH, CO, OCO or COO; and L = H or F. An Independent claim is included for the liquid crystal mixture per se.
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机译:扭曲的气动或超扭曲气动液晶显示器包含气动液晶混合物,该混合物包含具有不同介电各向异性的化合物和光学活性成分,以提供较低的切换时间以及良好的对比度和角度依赖性。扭曲的气动或超扭曲气动液晶显示器包括两个支撑板以形成单元,具有正介电各向异性的气动液晶混合物,具有取向层的电极,支撑板表面上分子的长度轴之间的入射角以及支撑板为0-30度,扭转角为22.5-600度,以及包含20-90 wt。%液晶组分(A)的含式(IA)和(IB)化合物以及介电常数的气动液晶混合物各向异性大于+1.5,包含介电各向异性的化合物在-1.5和+1.5之间的液晶组分(B),占10-80 wt。%,包含化合物的液晶组分(C),0--20 wt。%, )-1.5以下的介电各向异性和光学活性组分(D),其用量应为手性气动液晶混合物的膜厚与自然螺距之比为0.2-1.3:R 3 = 2-7C烷基; R 1和R 2 = 1-12C任选经O,CH = CH,CO,OCO或COO取代的烷基,烷氧基或烯基; L = H或F。液晶混合物本身包括独立权利要求。
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