1-(trifluoromethyl)naphthalene derivative

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...

Reexamination Certificate

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Details

C252S299610, C252S299620, C568S634000, C570S183000, C570S187000

Reexamination Certificate

active

07919154

ABSTRACT:
Since a 1-(trifluoromethyl)naphthalene derivative of the present invention has negative dielectric anisotropy, has a very large absolute value, is chemically stable with heat, light, water, and the like, moreover, it excels in compatibility with a liquid crystal compound or a liquid crystal composition used widely nowadays, it is suitable as an element of a practical liquid crystal composition capable of low voltage drive. In addition, the liquid crystal composition using the compound of the present invention has low drive voltage, is useful as a constituent material of the liquid crystal display device of low consumption of electrical power, and can be used suitably for liquid crystal display devices such as a VA type and an IPS type, and the like.

REFERENCES:
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patent: 7662442 (2010-02-01), Nagashima
patent: 7803435 (2010-09-01), Takeshita et al.
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patent: 08-040953 (1996-02-01), None
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patent: 2000-109843 (2000-04-01), None
patent: 2000-119653 (2000-04-01), None
patent: 2008-222588 (2008-09-01), None
patent: WO-89/08633 (1989-09-01), None
Office Action drafted Sep. 26, 2008, issued on the corresponding Japanese application No. 2008-513850 and the brief English translation thereof.
International Search Report mailed May 13, 2008, issued on PCT/JP2008/053765.

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