| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a liquid crystal composition satisfying at least one characteristic or having suitable balance of at least two characteristics of characteristics such as a high upper limit temperature of a nematic phase, a low lower limit temperature of the nematic phase, low viscosity, suitable optical anisotropy, negatively large dielectric anisotropy, high specific resistance, high stability to UV, high stability to heat, and to provide an active matrix (AM) element having a short response time, a high voltage holding ratio, a high contrast ratio, a long life and the like. <P>SOLUTION: The liquid crystal composition includes a specified tetra-cyclic compound having a high upper limit temperature and negatively large dielectric anisotropy as a first component and a bi-cyclic compound having low viscosity as a second component, and may respectively contain a specified compound having negatively large dielectric anisotropy as a third component, a specified compound having low viscosity as a fourth component and a specified compound having negatively large dielectric anisotropy as a fifth component to make the liquid crystal composition having the negative dielectric anisotropy and the liquid crystal element contains the composition. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
