Liquid crystal composition and liquid crystal display device

Details Liquid crystal composition and liquid crystal display device Liquid crystal composition and liquid crystal display device

2010-08-24

2011-11-15

Wu, Shean (Department: 1722)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299630, C252S299660, C252S299670

Reexamination Certificate

active

08057867

ABSTRACT:
SubjectThe subject 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 suitable optical anisotropy, a large dielectric anisotropy, a large elastic constant ratio, a small temperature dependence of the threshold voltage, a small frequency dependence of the dielectric anisotropy and a short helical pitch, or that is suitably balanced regarding at least two of the characteristics. The subject is to provide a STN device that has a short response time, a large contrast ratio, a low threshold voltage, a small electric power consumption, a steep voltage-transmission curve and a small light leak.Means for Solving the SubjectThe invention provides a nematic liquid crystal composition that include a specific optically active compound as a first component and a specific compound having a positively large dielectric anisotropy as a second component, and that optionally may include a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a positively large dielectric anisotropy as a fourth component, and provides a liquid crystal display device containing this composition.

REFERENCES:
patent: 5439613 (1995-08-01), Takeshita et al.
patent: 7976912 (2011-07-01), Hiraoka et al.
patent: 7976913 (2011-07-01), Hiraoka et al.
patent: 2010/0308266 (2010-12-01), Yanai et al.
patent: 0 360 043 (1990-03-01), None
patent: 0 609 566 (1994-08-01), None
patent: 02-067232 (1990-03-01), None
patent: 05-229979 (1993-09-01), None
patent: 06-200251 (1994-07-01), None

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