申请人:Dainippon Ink and Chemicals, Inc.
公开号:US06468607B1
公开(公告)日:2002-10-22
Disclosed is a novel liquid-crystalline compound which is a naphthalene derivative useful as an electro-optical liquid crystal display material, a liquid crystal composition containing such naphthalene derivatives and a liquid crystal display device comprising the same. The naphthalene derivative provided by the present invention exhibits an excellent liquid-crystallinity and miscibility with currently widely used liquid crystal compositions or compositions. The addition of the naphthalene derivative makes it possible to drastically lower the threshold voltage of the liquid crystal composition while maintaining its high response. The naphthalene derivative of the present invention is characterized by a large birefringence index. Further, most of the naphthalene derivative of the present invention has no strongly polar group in its molecule and thus can also be used for active matrix driving. Moreover, as shown in the foregoing examples, the naphthalene derivative of the present invention can be easily produced and is colorless and chemically stable. Accordingly, the liquid crystal composition comprising the naphthalene derivative of the present invention is extremely useful as a practical liquid crystal composition, particularly a liquid crystal composition which can operate within a wide temperature range and requires a high speed response and a low voltage driving.
本公开了一种新型液晶化合物,它是一种萘衍生物,可用作电光液晶显示材料,包含这种萘衍生物的液晶组合物以及包括它们的液晶显示装置。本发明提供的萘衍生物表现出优异的液晶性能,并且与目前广泛使用的液晶组合物或配方具有良好的相溶性。添加萘衍生物可以显著降低液晶组合物的阈值电压,同时保持其高响应速度。本发明的萘衍生物具有较大的双折射指数。此外,大多数本发明的萘衍生物分子中没有强极性基团,因此也可用于有源矩阵驱动。此外,如前述示例所示,本发明的萘衍生物易于生产,无色且化学稳定。因此,包括本发明的萘衍生物的液晶组合物非常有用,特别是在广泛温度范围内运行且需要高速响应和低电压驱动的液晶组合物。