Chisso Corporation

Jnc Corporation

Jnc Petrochemical Corporation

Chisso Petrochemical Corporation

Waseda University

Yasuyuki Goto

Shigeru Sugimori

Tetsuya Ogawa

Shuichi Matsui

Shinichi Sawada

Kisei Kitano

Etsuo Nakagawa

Kazutoshi Miyazawa

Toyoshiro Isoyama

Tomoyuki Kondo

Atsuko Fujita

Kazunori Nigorikawa

Masahiro Fukui

Noriyuki Ohnishi

Hiromichi Inoue

Makoto Ushioda

Yuichi Onji

Naoyuki Yoshida

Hideo Sato

Takashi Inukai

Yoshito Furukawa

Yasuhiro Haseba

Manabu Uchida

Norikatsu Hattori

Teru Shimada

Teruyo Sugiura

Tetsuhiko Kojima

Tomohiro Yano

Tokifumi Masukawa

Toshiharu Suzuki

Junichi Yamashita

Maiko Matsukuma

Susumu Tokita

Masami Tanaka

Hiroaki Fujita

Hideo Saito

Kazuhiko Saigusa

Takahiro Kubo

Subaru Kawasaki

Teizi Satou

Noboru Inoue

Shintaro Ishigami

Yoichi Nakao

Shin-ichiro Kawazu

Makota Ushioda

Naoko Ota

Keiichi Matsunami

Kohzo Hirata

A compound represented by formula (1), a liquid crystal composition, a liquid crystal display device are described. In formula (1), for example, the ring Aand the ring Aare phenylene or cyclohexylene; Z, Z, Zand Zare a single bond or alkylene having 1 to 6 carbons; Lis a single bond; s and t are 0; and P, P, Pand Pare a polymerizable group.

Compound having four polymerizable groups, liquid crystal composition and liquid crystal display device

The invention provides a liquid crystal compound that has an excellent compatibility with other liquid crystal compounds and also has at least one of characteristics such as a high stability to heat, light or the like, a suitable refractive index anisotropy (&#x394;n), a low threshold voltage and a suitable dielectric anisotropy (&#x394;&#x2208;). A compound represented by formula (1)  For example, Ris alkyl having 1 to 10 carbons, Ris halogen or alkenyl having 2 to 10 carbons; the ring A, the ring Aand the ring Aare 1,4-cyclohexylene or 1,4-phenylene; Z, Zand Zare a single bond or alkylene having 1 to 4 carbons; G is &#x2014;CH&#x2014; or &#x2014;O&#x2014;; and m is 1, and n and p is 0 or 1.

Compound having a five-membered ring, the liquid crystal composition and the liquid crystal display device

A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition has a negative dielectric anisotropy, contains a specific compound having a large negative dielectric anisotropy as a first component and a two-ring compound having a small viscosity as a second component, and may further contain a specific compound having a large negative dielectric anisotropy as a third component, a specific compound having a small viscosity as a fourth component and a specific compound having a large negative dielectric anisotropy as a fifth component. The AM liquid crystal display device includes the liquid crystal composition.

Liquid crystal composition and liquid crystal display device

To provide a liquid crystal compound having general physical properties required for the compound, namely, a high stability to heat, light and so forth, a small viscosity, a refractive index anisotropy value having a suitable magnitude, a dielectric constant anisotropy value having a suitable magnitude and steep electro-optical characteristics, a wide temperature range of a nematic phase, and an excellent compatibility with other liquid crystal compounds, in particular, a liquid crystal compound having a wide temperature range of the nematic phase; the compound is represented by formula (1): wherein R is alkenyl having 2 to 20 carbons; ring Aand ring Aare independently 1,4-cyclohexylene, or 1,4-phenylene in which at least one of hydrogen may be replaced by fluorine; Zand Zare independently a single bond, &#x2014;CHCH&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;CHO&#x2014; or &#x2014;OCH&#x2014;; and n is 0 or 1.

Fluorovinyl derivative, liquid crystal composition and liquid crystal display device

The object is to develop an antiprotozoal remedy having a novel mechanism of action. Provided is a compound represented by a chemical formula (1), a prodrug or a pharmaceutically acceptable salt thereof, wherein within the formula (1), Rrepresents R&#x2014; of formula (4) or R&#x2014; of formula (5); Rrepresents CHO&#x2014;, etc.; Rrepresents a hydrogen atom, CH&#x2014;C(&#x2550;O)&#x2014;, etc.; Rrepresents a hydrogen atom, CH&#x2014;C(&#x2550;O)&#x2014;, etc.; each of Rand Rindependently represents a hydrogen atom, a methyl group, etc.; Rrepresents &#x2014;CH&#x2014;, &#x2014;CH(&#x2014;OH)&#x2014; or &#x2014;C(&#x2550;O)&#x2014;; each of Rand Rindependently represents a hydrogen atom, a methyl group, etc.; Rrepresents &#x2014;CH&#x2014;, &#x2014;CH(&#x2014;OH)&#x2014; or &#x2014;C(&#x2550;0)&#x2014;; and Rrepresents a hydrogen atom, a hydroxyl group, a methyl group, etc.

Antiprotozoal compound derived from coelenterata

The invention provides a liquid crystal compound that has an excellent compatibility with other liquid crystal compounds and also has at least one of characteristics such as a high stability to heat, light or the like, a suitable refractive index anisotropy (&#x394;n), a low threshold voltage and a suitable dielectric anisotropy (&#x394;&#x2208;). A compound represented by formula (1).  For example, Ris alkyl having 1 to 10 carbons, Ris halogen or alkenyl having 2 to 10 carbons; the ring A, the ring Aand the ring Aare 1,4-cyclohexylene or 1,4-phenylene; Z, Zand Zare a single bond or alkylene having 1 to 4 carbons; G is &#x2014;CH&#x2014; or &#x2014;O&#x2014;; and m is 1, and n and p is 0 or 1.

Providing a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific two-ring compound having a low minimum temperature as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a low viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component. The liquid crystal display device contains the composition.

A liquid crystal compound having a high stability to heat, light or the like, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. A compound represented by formula (1): for example, Ris alkyl having 1 to 10 carbons; ring A, ring Aand ring Aare 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one of hydrogen has been replaced by fluorine; Zis a single bond, and Zand Zare &#x2014;CFO&#x2014; or &#x2014;OCF&#x2014;; Xis fluorine; and Land Lare fluorine.

[object Object]

Such a liquid crystal compound is provided that has stability to heat, light and so forth, has a nematic phase in a wide temperature range, has a small viscosity, a suitable optical anisotropy, and suitable elastic constants Kand K(K: bend elastic constant, K: splay elastic constant), and has suitable negative dielectric anisotropy and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the liquid crystal compound, and a liquid crystal display device containing the liquid crystal composition are also provided. The liquid crystal compound is represented by one of formulas (a) to (d), the liquid crystal composition contains the liquid crystal compound, and the liquid crystal display device contains the liquid crystal composition: wherein Ra and Rb are independently linear alkyl or linear alkoxy, rings A, A, B and C are independently trans-1,4-cyclohexylene or 1,4-phenylene, Z, Z, Zand Zare independently a single bond or alkylene, and one of Xand Xis fluorine, and the other thereof is chlorine.

Chlorofluorobenzene liquid crystal compound, liquid crystal composition, and liquid crystal display device

A liquid crystal compound selected from a group of compounds represented by formula (a): wherein Ra and Rb are each independently alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons, alkoxyalkyl having 2 to 9 carbons, alkenyl having 2 to 10 carbons, alkenyloxy having 2 to 9 carbons, fluoroalkyl having 1 to 10 carbons or fluoroalkoxy having 1 to 9 carbons; ring A, ring Aand ring Aare each independently trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl, trans-tetrahydropyran-2,5-diyl, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,5-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, pyridine-2,5-diyl, 6-fluoropyridine-2,5-diyl or pyridazine-2,5-diyl; Z, Zand Zare each independently a single bond, &#x2014;(CH)&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;CHO, &#x2014;OCH&#x2014;, &#x2014;COO&#x2014;, &#x2014;OCO&#x2014;, &#x2014;OCF&#x2014;, &#x2014;CFO&#x2014;, &#x2014;CHCHOCF&#x2014; or &#x2014;CFOCHCH&#x2014;; l, m and n are each independently 0, 1 or 2, provided that l+m+n is 0, 1, 2 or 3; one of Xand Xis fluorine, and the other is chlorine; Q is and atoms comprising the compound each may be an isotope thereof.

Chlorofluorobenzene liquid crystal compound, liquid crystal composition and liquid crystal display device

Phenylbenzoate derivatives and liquid crystal compositions

Chlorobenzene derivative and liquid crystal composition containing the

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Chiba, Japan

Yasuyuki Goto