Jnc Corporation

Jnc Petrochemical Corporation

Chisso Corporation

Chisso Petrochemical Corporation

Kazuhiko Saigusa

Norikatsu Hattori

Ryushi Shundo

Kazutoshi Miyazawa

Yasuyuki Goto

Yoshimasa Furusato

Takashi Kato

Yasuyuki Sasada

Motoki Yanai

Yoshiharu Hirai

Takayoshi Yanai

Subaru Kawasaki

Norio Tamura

Maiko Ito

Tomohiro Etou

The liquid crystal composition having a negative dielectric anisotropy contains two ring compound having a large optical anisotropy and a negatively large dielectric anisotropy as the first component, three ring compound having a large maximum temperature and a large dielectric anisotropy as the second component, three ring compound having a large optical anisotropy and a large dielectric anisotropy as the third component, and two ring compound having a small viscosity as the fourth component. The liquid crystal display device contains the compositions.

Liquid crystal composition and liquid crystal display device

To provide a liquid crystal composition satisfying at least one characteristic such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat; a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having a short response time, a large voltage holding ratio and contrast ratio, a long service life; a solution is a liquid crystal composition that has a negative dielectric anisotropy, and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component, and may contain a specific compound having a large negative dielectric anisotropy as a third component, and a liquid crystal display device including the composition.

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

The liquid crystal composition has a negative dielectric anisotropy, and contains a specific bicyclic compound having a large optical anisotropy and negative dielectric anisotropy as a first component and a specific tricyclic compound having a large dielectric anisotropy as a second component, and may contain a specific compound having a small viscosity as a third component, a specific compound having a large dielectric anisotropy and a small viscosity as a fourth component and a specific compound having a large dielectric anisotropy as a fifth component, and the liquid crystal display device includes the composition.

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.

A liquid crystal composition is described, which contains a two-ring compound having a large optical anisotropy and a negatively large dielectric anisotropy as a first component, and a two-ring compound having a negatively large dielectric anisotropy and a small viscosity as a second component, and may further contain at least one of a compound having a small viscosity as a third component, a compound having a negatively large dielectric anisotropy as a fourth component, and a compound having an especially negatively large dielectric anisotropy as a fifth component. An AM liquid crystal display device containing the liquid crystal composition is also described.

In a liquid crystal display device having a plurality of retardation films for alleviating a deterioration in display quality depending on a viewing angle direction, and a driving liquid crystal layer selected from the group consisting of a driving liquid crystal layer typified by a VA mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned perpendicular to a substrate when no electric field is applied, a driving liquid crystal layer typified by an IPS mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned parallel to the substrate when no electric field is applied, and a driving liquid crystal layer that shows optical isotropy when no voltage is applied, a retardation film of a positive A-plate formed of a liquid crystalline polyimide having a photoreactive group is used as at least one layer of the plurality of retardation films.

Liquid crystal display device having retardation film formed of liquid crystalline polyimide having photoreactive group

The compound provided by the present invention is a polymerizable optically active compound represented by Formula (1): wherein Ris hydrogen, chlorine or bromine; Ris hydrogen, methyl or ethyl; Ais 1,4-phenylene, biphenyl-4,4'-diyl, naphthalene-2,6-diyl or pyridine-2,5-diyl, provided that in the 1,4-phenylene arbitrary hydrogen may be replaced by chlorine, bromine or fluorine, and in the biphenyl-4,4&#x2032;-diyl arbitrary hydrogen may be replaced by chlorine, bromine or fluorine; and Xis a single bond, &#x2014;CH&#x2550;CH&#x2014; or &#x2014;CHCH&#x2014;.

Composition containing a polymerizable optically active compound

The present invention provides a photopolymerizable liquid crystal composition comprising at least a compound having oxiranyl as a first component and at least a compound having oxetanyl as a second component, a polymer or a polymer composition obtained from the liquid crystal composition, a film obtained from the polymer or polymer composition, and an optical compensation element using the film.

Photopolymerizable liquid crystal composition, its polymer or polymer composition, and optical compensation element

Provided are a polymerizing liquid-crystalline compound of formula (1). In formula (1), Qto Qeach independently represent a formula (2), a hydrogen atom, a halogen atom, an alkyl group or the like; at least two of Qto Qare a formula (2) and may differ from each other. In formula (2), A independently represent a 1,4-cyclohexylene group, a 1,4-phenylene group or the like; X independently represents a single bond, an alkylene group or the like; Z represents a single bond, &#x2014;COO&#x2014;, &#x2014;OCO&#x2014; or the like; n indicates an integer of from 0 to 3; p represents any one polymerizing group of formulae (P1) to (P8); W represents a hydrogen atom, a halogen atom, an alkyl group or the like. When Qand Qare both hydrogen atoms and when Qand Qare both formula (2), then p must not be (P8).

Polymerizing binaphthalene derivatives

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.

Polymerizable liquid crystal composition and optically anisotropic thin film

A compound represented by formula (1) or (2) and a polymer obtained by polymerizing the compound are provided: wherein Ris one of the groups represented by Formulas (3-1) to (3-5); Ris hydrogen, halogen, or a side chain such as &#x2014;CN, &#x2014;NCO, &#x2014;NCS or alkyl having a carbon number of 1 to 20; A is a cyclic diyl group such as 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, fluorene-2,7-diyl, bicyclo[2.2.2]oct-1,4-diyl or bicyclo[3.1.0]hex-3,6-diyl, wherein at least one A is substituted 1,4-phenylene represented by Formula (4-1) or (4-2); Z is a single bond or a bonding group such as alkylene having a carbon number of 1 to 20; Ris hydrogen, halogen, &#x2014;CFor alkyl having a carbon number of 1 to 5; m is an integer of 1 to 6, and q is 0 or 1.

Growing community of inventors

Chiba, Japan

Kazuhiko Saigusa