Pyran derivative, its preparation method, liquid crystal...

Details Pyran derivative, its preparation method, liquid crystal... Pyran derivative, its preparation method, liquid crystal...

2011-06-28

2011-06-28

Visconti, Geraldina (Department: 1722)

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C252S299010, C252S299610, C252S299620, C252S299630, C549S427000, C549S428000, C428S001100, C430S020000

Reexamination Certificate

active

07968003

ABSTRACT:
The present invention relates to a pyran derivative which manifests appropriate refractive anisotropy (optical anisotropy) and liquid crystal transition temperature and excellent dielectric anisotropy, and has excellent compatibility with various liquid crystal compounds, and thus, can be preferably used for the formation of a liquid crystal layer of a liquid crystal display device, its preparation method, a liquid crystal composition and liquid crystal display device comprising the same.

REFERENCES:
patent: 7314943 (2008-01-01), Poetsch et al.

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