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    • 7. 发明授权
    • Naphthalene derivative and liquid crystal composition comprising the same
    • 萘衍生物和包含它们的液晶组合物
    • US06468607B1
    • 2002-10-22
    • US09296550
    • 1999-04-22
    • Sadao TakeharaMasashi OsawaHaruyoshi TakatsuMakoto Negishi
    • Sadao TakeharaMasashi OsawaHaruyoshi TakatsuMakoto Negishi
    • C09K1932
    • C07C17/2637C07C17/263C07C17/2632C07C17/2635C07C17/269C07C17/354C07C25/18C07C25/22C07C25/24C07C255/50C07C2601/14C07C2602/28C09K19/322Y10T428/10
    • 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.
    • 公开了一种新颖的液晶化合物,它是一种可用作电光液晶显示材料的萘衍生物,含有该衍生物的液晶组合物和包含该衍生物的液晶显示装置。 由本发明提供的萘衍生物与当前广泛使用的液晶组合物或组合物显示出优异的液晶性和混溶性。 通过加入萘衍生物可以使液晶组合物的阈值电压大大降低,同时保持其高响应性。 本发明的萘衍生物的特征在于双折射率大。 此外,本发明的大多数萘衍生物在其分子中没有强极性基团,因此也可用于有源矩阵驱动。 此外,如前述实施例所示,本发明的萘衍生物可以容易地制备,并且是无色和化学稳定的。 因此,含有本发明的萘衍生物的液晶组合物作为实用的液晶组合物,特别是能够在宽温度范围内工作并需要高速响应和低电压驱动的液晶组合物是非常有用的。