Jnc Corporation

Jnc Petrochemical Corporation

Chisso Petrochemical Corporation

Chisso Corporation

Maiko Ito

Ryushi Shundo

Masami Kimura

Norikatsu Hattori

Yoshimasa Furusato

Daisuke Ootsuki

Kazuhiko Saigusa

Tomohiro Yano

Tokifumi Masukawa

Eriko Kurihara

Junichi Yamashita

Kenji Hirata

Keiji Kimura

Junichi Inagaki

Eriko Saegusa

Provided is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a 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 high stability to heat, or having a suitable balance regarding at least two of the characteristics. Also provided is an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component, a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.

Liquid crystal composition and liquid crystal display device

To provide a polymerizable compound having a high solubility in a liquid crystal composition, and laterally having a ring structure; a liquid crystal composition containing the compound, and a liquid crystal display device using the composition; and the polymerizable compound includes a compound represented by formula (1): 

Polymerizable compound

Provided is a polymerizable compound with large solubility in a liquid crystal composition and high reactivity irradiated by ultraviolet in the longer wavelength range. Provided is a liquid crystal composition that satisfies at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of a nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or that is suitably balanced between at least two of the characteristics. Provided is the polymerizable compound wherein at least one of a 1,3-phenylene structure and a 2,7-fluorenediyl structure is introduced to the polymerizable compound to give stable displays by forming a polymer with a high degree of polymerization in a PSA device production process using longer wavelengths, the liquid crystal composition includes the compound, and the liquid crystal display device contains the composition.

Polymerizable compound and liquid crystal composition including it

The invention provides a liquid crystal compound that has a large negative dielectric anisotropy (&#x394;&#x2208;) and also has at least one of characteristics such as the stability to heat, light or the like, a high clearing point, a suitable refractive index anisotropy (&#x394;n), a large negative dielectric anisotropy (&#x394;&#x2208;) and an excellent compatibility with other liquid crystal compounds. An excellent effect in which especially the value of the dielectric anisotropy (&#x394;&#x2208;) is increased negatively is achieved by use of the compound having two moieties of and thus the effect is utilized.

Four-ring liquid crystal compound having tetrahydropyran and 2,2',3,3&#x2032;-tetrafluorobiphenyl, liquid crystal composition and liquid crystal display device

The compound of the present invention is represented by the formula (1). In the formula (1), Rand Rare hydrogen, fluorine, chlorine, methyl or ethyl; Xand Xare hydrogen, fluorine, methyl or trifluoromethyl; Zand Zare a single bond, &#x2014;COO&#x2014;, &#x2014;OCO&#x2014;, &#x2014;CH&#x2550;CH&#x2014;COO&#x2014;, &#x2014;OCO&#x2014;CH&#x2550;CH&#x2014;, &#x2014;CHCH&#x2014;COO&#x2014;, &#x2014;OCO&#x2014;CHCH&#x2014;, &#x2014;CHO&#x2014;, &#x2014;CONH&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;CHCH&#x2014; or &#x2014;C&#x2261;C&#x2014;; Zand Zare a single bond or &#x2014;O&#x2014;; Aand Aare 1,4-cyclohexylene, 1,4-phenylene, 1,3-phenylene, pyridin-2,5-diyl, pyrimidin-2,5-diyl, naphthalen-2,6-diyl or tetrahydronaphtlane-2,6-diyl; and Yand Yare alkylene having from 2 to 20 carbon atoms. 

Polymerizable liquid crystal compound, liquid crystal composition, and polymer

A polymerizable liquid crystal composition containing compounds represented by the formula (1-1) and the formula (1-2), compounds represented by the formula (2-1) and the formula (2-2), and a compound represented by the formula (3-1):the polymerizable liquid crystal composition having homogeneous, homeotropic, or hybrid alignment, which can be coated on a support substrate, for example, of a transparent plastic film such as a triacetyl cellulose film or cycloolefin polymer film, or glass, and is aligned on a substrate as a polymer film while maintaining the alignment.

Polymerizable liquid crystal composition and polymer thereof

A polymerizable liquid crystal composition containing compounds represented by the formula (1-1) and the formula (1-2), compounds represented by the formula (2-1) and the formula (2-2), and a compound represented by the formula (3-1): the polymerizable liquid crystal composition having homogeneous, homeotropic, or hybrid alignment, which can be coated on a support substrate, for example, of a transparent plastic film such as a triacetyl cellulose film or cycloolefin polymer film, or glass, and is aligned on a substrate as a polymer film while maintaining the alignment.

In order to obtain such a liquid crystal thin film having optical anisotropy that suffers less change in optical characteristics thereof under heating to 200&#xb0; C., the following polymerizable liquid crystal composition is provided as a raw material therefor. The composition contains Compound (1) and at least one of Compound (2) and Compound (3), with a proportion of Compound (1) being from 50 to 99% by weight, a proportion of Compound (2) being from 0 to 50% by weight, and a proportion of Compound (3) being from 0 to 50% by weight: wherein R is alkyl; each of Wand Wis independently hydrogen, chlorine, fluorine or &#x2014;CH; each of Wand Wis independently hydrogen, chlorine, fluorine, &#x2014;CHor &#x2014;CF; Wis alkyl having, alkoxy, chlorine, fluorine, &#x2014;CN or &#x2014;OCF; X is a single bond, &#x2014;CH&#x2550;CH&#x2014; or &#x2014;CHCH&#x2014;; Z is a single bond, &#x2014;COO&#x2014;, &#x2014;OCO&#x2014; or &#x2014;CHCH&#x2014;; and q is an integer of from 1 to 20.

Growing community of inventors

Chiba, Japan

Maiko Ito