摘要:
A subject is to provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or is to provide a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and to provide an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. A solution is a liquid crystal composition that has a nematic phase and contains a specific compound having a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may contain a specific compound having a high maximum temperature or a large dielectric anisotropy as a third component, and a liquid crystal display device including the composition.
摘要:
To provide a liquid crystal composition having at least one or at least two suitable balance in characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, and to provide an AM device having a short response time, suitable pretilt and so forth. The liquid crystal composition has a negative dielectric anisotropy, and 4 .2 GPa · s/N or less as a ratio of rotational viscosity to an elastic constant, and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific compound having a polymerizable group as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component and a specific compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.
摘要:
To provide a liquid crystal composition satisfying at least one or having a suitable balance regarding at least two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat. To provide an AM device having short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having large dielectric anisotropy as a first component and a specific bicyclic compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or large dielectric anisotropy as a third component and a specific compound having high maximum temperature or small viscosity as a fourth component, and has a nematic phase. The liquid crystal display device includes the composition.
摘要:
The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein the liquid crystal composition has positive dielectric anisotropy and includes a specific four-ring compound having a high maximum temperature of a nematic phase and a large dielectric anisotropy as a first component and a specific compound having a large positive dielectric anisotropy as a second component, and the liquid crystal display device contains this composition.