Nemoptic

Dic Corporation

France Brevets

Jean-Claude Dubois

Ivan N Dozov

Daniel Stoenescu

Haruyoshi Takatsu

Kiyofumi Takeuchi

Hidetoshi Nakata

Didier Gallaire

Takeshi Kuriyama

Philippe Martinot-Lagarde

Stephane Joly

Sandrine Lamarque

Ivan Dozov

The present invention provides a nematic liquid crystal composition suitable for a bistable nematic liquid crystal display. A bistable nematic liquid crystal display having a wide nematic phase temperature range and operating temperature range can be obtained by using a nematic liquid crystal composition comprising at least 20% by weight of a specific liquid crystal compound (A) having a polar group and 5 to 50% by weight of a specific liquid crystal compound (B) not having a polar group, along with comprising, in the compound (B), at least 3% by weight of a specific liquid crystal compound having a alkenyl group.

Nematic liquid crystal composition and bistable nematic liqud crystal display

A nematic liquid crystal composition of the present invention includes at least 20% by weight of one, or two or more compounds selected from compound group A; and 5 to 50% by weight of one, or two or more compounds selected from compound group B, wherein the relative proportions of the above-mentioned compounds used in the nematic liquid crystal composition is determined to simultaneously obtain the specific physical characteristics for the composition, and an anchoring breaking voltage Uis less than or equal to 25 V when the product (&#x394;n&#xb7;d) of the refractive index anisotropy (&#x394;n) at 20&#xb0; C. and the thickness (d) is 140 nm and the liquid crystal composition is confined between two substrates for a bistable nematic liquid crystal display in which at least one of the substrates have a weak zenithal anchoring force.

Nematic liquid crystal composition and bistable nematic liquid crystal display

A method of using a liquid crystal composition in a bistable liquid crystal device having a weak zenithal anchoring comprising at least 40% by weight of compounds with strong molecular polarisability and strong dipole moment.

Nematic liquid crystal mixtures for use in bistable display devices

The present invention relates to novel polyimides derived from 6FDA and from 3,3-dihydroxy-4,4'-diaminobiphenyl and novel polyimides derived from PMDA and from Bis-AP-AF, having alkyl, arylalkyl, heteroarylalkyl, (cycloalkyl)alkyl, fluoroalkyl or siloxane side groups. The present invention also relates to a method of producing nematic liquid-crystal devices, which comprises the steps consisting in:

Polyimides for anchoring liquid crystals, display devices including same and method for the preparation of said devices

Growing community of inventors

Bullion, France

Jean-Claude Dubois