Chisso Corporation

Chisso Petrochemical Corporation

Jnc Corporation

Tomoyuki Kondou

Shuichi Matsui

Kazutoshi Miyazawa

Hiroyuki Takeuchi

Etsuo Nakagawa

Fusayuki Takeshita

Yasuhiro Kubo

Norikatsu Hattori

Yasuhiro Haseba

Hiroaki Fujita

Yasusuke Hisatsune

Keiji Kimura

Teizi Satou

A liquid crystal (LC) compound having generally required physical properties, low viscosity, proper optical anisotropy, proper dielectric anisotropy and good compatibility with other LC compounds is described. An LC composition including the compound and an LCD device including the composition are also described. The compound is expressed by formula (1a): wherein the ring Aand the ring Aare independently 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl or naphthalene-2,6-diyl, in which any hydrogen can be replaced by halogen; Z, Zand Zare independently a single bond, &#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;CFO&#x2014;, &#x2014;OCF&#x2014;, &#x2014;COO&#x2014; or &#x2014;OCO&#x2014;; X, X, X, X, Xand Xare independently hydrogen or fluorine; Y is &#x2014;OCHF, &#x2014;OCHF, &#x2014;OCF, &#x2014;SCHF, &#x2014;SCHF, &#x2014;SCF, &#x2014;CHF, &#x2014;CHF, &#x2014;CF, fluorine or chlorine; Land Lare independently hydrogen or fluorine; and 'l' and 'm' are independently equal to 0 or 1.

Naphthalene compound with terminal hydrogen, liquid crystal composition including the compound, and LCD device including the liquid crystal composition

A liquid crystal compound is provided that has stability to heat and an ultraviolet ray, a small viscosity, a suitable refractive index anisotropy, a suitable dielectric anisotropy, a nematic phase within a wide temperature range and favorable compatibility with other liquid crystal compounds, and a liquid crystal composition is also provided that has a particularly small viscosity. The liquid crystal compound is a compound represented by formula (1): wherein in formula (1), Ris hydrogen or alkyl having 1 to 5 carbons; one of Xand Xis hydrogen, and the other thereof is fluorine; and Ris hydrogen or methyl.

Monofluorinated terphenyl compound having alkenyl, liquid crystal composition, and liquid crystal display device

Terphenyl derivative, liquid crystal composition and liquid crystal display device

Terphenyl derivative, liquid-crystal composition, and liquid-crystal display element

The present invention provides liquid crystalline compounds having a very high voltage holding ratio, very little variation of these properties depending on temperature, high &Dgr;n, and good compatibility in the other liquid crystal materials particularly under a low temperature, liquid crystal compositions containing these crystalline compounds, and liquid crystal display devices constituted by using the liquid crystal compositions. The liquid crystalline compounds are represented by general formula (1):

Fluoroalkylated liquid-crystal compounds, liquid-crystal compositions, and liquid-crystal display elements

Dioxane derivatives, liquid-crystal compositions containing the same, and liquid-crystal display devices made by using the same

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Ichihara, Japan

Tomoyuki Kondou