Chisso Corporation

Jnc Corporation

Jnc Petrochemical Corporation

Chisso Petrochemical Corporation

Kyushu University

Other

Jnc Petrochemical Corportion

Yasuhiro Haseba

Etsuo Nakagawa

Kazutoshi Miyazawa

Shuichi Matsui

Takafumi Kuninobu

Koki Sago

Shin-ichi Yamamoto

Hiroyuki Takeuchi

Yasuyuki Koizumi

Fusayuki Takeshita

Tomoyuki Kondo

Yasuyuki Goto

Shinichi Sawada

Norihisa Hachiya

Koichi Shibata

Noriyuki Ohnishi

Shinichi Yamamoto

Hirotsugu Kikuchi

Yasuhiro Kubo

Yasuko Sekiguchi

Yasusuke Hisatsune

Noriyuki Onishi

Masayuki Saito

Norikatsu Hattori

Yoshitaka Tomi

Kouki Sagou

Hitoshi Yano

Tomoyuki Kondou

Hitoshi Tobata

Yasushi Okumura

Hiroki Higuchi

Hiroya Nishikawa

Kohki Sago

Kazuya Shiroshita

Yoshitaka Yagi

Shin-Ichi Yamamoto

One aspect is contemplated for providing a device having a liquid crystal material exhibiting a dielectric constant of 1000 or more at a temperature at which a specific liquid crystal phase is developed, and a unit configured to apply voltage to the liquid crystal material at the temperature at which the specific liquid crystal phase is developed.

Liquid crystal device

A liquid crystal medium that has stability to heat, light and so forth, a wide temperature range of a liquid crystal phase and significantly large dielectric anisotropy to develop an optically isotropic liquid crystal phase is required. Moreover, various optical devices that can be used in a wide temperature range, and have a short response time, a large contrast ratio and a low drive voltage are required. A liquid crystal composition contains an achiral component T containing at least one compound (1) represented by formula (1) and a chiral agent to develop an optically isotropic liquid crystal phase, wherein in formula (1), Ris alkyl having 1 to 12 carbons, L, Land Lare each independently hydrogen, fluorine or chlorine; and Yis fluorine, CF, or &#x2014;OCF. 

Liquid crystal medium, optical device and liquid crystal compound

A liquid crystal composition is described, containing a chiral agent and achiral component T containing at least one compound 1 having an unsubstituted or methyl group-substituted dioxane ring and having at least one &#x2014;COO&#x2014; or &#x2014;CFO&#x2014; as a connecting group, and exhibiting an optically isotropic liquid crystal phase.

Optically isotropic liquid crystal composition and optical device

A liquid crystal medium has stability to heat, light and so forth, and significantly high dielectric anisotropy, and develops an optically isotropic liquid crystal phase. Moreover, various kinds of optical devices can be used in a wide temperature range and have a short response time, a large contrast ratio and low driving voltage. A liquid crystal composition contains achiral component T containing at least one compound 1 represented by formula (1) and a chiral agent, and develops the optically isotropic liquid crystal phase.  In formula (1), for examples, Ris alkyl, Land Lare each independently fluorine or hydrogen, and Xis halogen.

A liquid crystal medium having stability to heat, light and so forth, a wide liquid crystal phase temperature range, a low driving voltage and a small permittivity and exhibiting an optically isotropic liquid crystal phase is described. An optical device or the like having a short response time, a large contrast ratio, a low driving voltage and a small permittivity is also described. The liquid crystal composition contains an achiral component (T) and a chiral agent, and exhibits an optically isotropic liquid crystal phase. The achiral component (T) includes at least one compound represented by formula (1): wherein, for example, Ris alkyl having 1 to 12 carbons, Aand Aare 1,4-phenylene, Zand Zare single bonds, Zis &#x2014;COO&#x2014; or &#x2014;CFO&#x2014;, Lis hydrogen, fluorine or chlorine, Yis fluorine, chlorine, &#x2014;CFor &#x2014;OCF, n1 and n2 are each independently 0 or 1, and n1+n2&#x2267;1.

Liquid crystal medium, optical device, and liquid crystal compound

A liquid crystal composition is described, which has a nematic phase and contains a compound having a high maximum temperature and a large dielectric anisotropy as a first component, and a specific compound having a large dielectric anisotropy as a second component, and may also contain a specific compound having a large dielectric anisotropy as a third component, and a compound having a small viscosity as a fourth component. An AM liquid crystal display device including the composition is also described.

Compound, liquid crystal composition and liquid crystal display device

An optically isotropic liquid crystal composition is described. The liquid crystal composition contains an achiral component T and a chiral agent, contains at least one compound represented by formula (1) as a first component of the achiral component T, and exhibits an optically isotropic liquid crystal phase: wherein, for example, Ris alkyl having 1 to 20 carbons; Lto Lare independently hydrogen or fluorine; Zto Zare each independently a single bond, &#x2014;COO&#x2014; or &#x2014;CFO&#x2014;, but at least one thereof is &#x2014;COO&#x2014;; n1 and n2 are each independently 0 or 1; and Xis halogen.

Optically isotropic liquid crystal medium and optical device

A cholesteric liquid-crystal composition is described, which contains a liquid-crystal component and a chiral agent, and has a selective reflection wavelength in the range of 400 nm to 800 nm at 25&#xb0; C.

Liquid-crystal composition

A liquid crystal medium having stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a large refractive index anisotropy and a large dielectric anisotropy and an optically isotropic liquid crystal phase is described. A liquid crystal composition is characterized by exhibiting the optically isotropic liquid crystal phase and containing achiral component T containing at least one compound selected from the group of compounds represented by formula (1) as a first component, and a chiral agent: wherein, for example, Ris alkyl having 1 to 20 carbons, L, L, L, L, Land Lare independently hydrogen or fluorine, and Xis halogen.

A liquid crystal composition is described, which exhibits an optically isotropic liquid crystal phase and contains an achiral component T and a chiral dopant. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1) in an amount of 32 wt % to 85 wt %, wherein Ris alkyl, for example; L, L, L, L, Land Lare each independently hydrogen or fluorine; Zand Zare each independently a single bond or &#x2014;CFO&#x2014;, with at least one of Zand Zbeing &#x2014;CFO&#x2014;; and Xis halogen, for example.

A liquid crystal medium, which has a liquid crystal phase over a wide temperature range, a large refractive index anisotropy, and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase, is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having four benzene rings and a difluoromethyleneoxy group, and a chiral reagent, and exhibiting an optically isotropic liquid crystal phase.

The invention provides an optically isotropic liquid crystal composition having: a liquid crystal component comprising a liquid crystal component A consisting of one or more compounds selected from the group consisting of compounds having difluoroalkenyl and compounds having alkenyl; and chiral dopants, wherein in the liquid crystal component, the content of compounds having 3 or more ring structures is approximately 15 wt % or more.

Liquid crystal composition and liquid crystal element

A liquid crystal medium having an optically isotropic liquid crystal phase is described, which has stability to heat, light and so on, a broad temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy. A liquid crystal composition is described, which includes an achiral component T and a chiral dopant and exhibits an optically isotropic liquid crystal phase. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1), wherein Ris Calkyl, the rings Ato Aare 1,4-phenylene, Zto Zare single bonds, Yand Yare fluorine; Xis halogen, and i, j, k, m, n, p and q are independently 0 or 1.

A liquid crystal compound and a liquid crystal medium are described. The liquid crystal compound is stable to heat and light and has a large dielectric anisotropy and a large optical anisotropy. The liquid crystal medium has a wide temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase. The liquid crystal compound has 4 or 5 benzene rings, one of which is a chlorofluorobenzene ring. The liquid crystal medium is characterized in containing the liquid crystal compound and a chiral dopant and exhibiting an optically isotropic liquid crystal phase.

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Chiba, Japan

Yasuhiro Haseba