39results about How to "Appropriate birefringence anisotropy" patented technology

The invention disclosed a liquid crystal composition, which contains one or a plurality of compounds represented by a formula I-a and/or I-b, one or a plurality of compounds represented by a formula II, and one or a plurality of compounds represented by a formula III, wherein the formulas I-a, I-b, II and III are defined in the specification. A purpose of the present invention is to provide a liquid crystal composition and a liquid crystal display element or a liquid crystal display device containing the liquid crystal composition. According to the present invention, the liquid crystal composition has low viscosity, can achieve fast response, and further has moderate dielectric anisotropy delta[epsilon], moderate optical anisotropy delta[n], high thermal stability and high light stability;and the liquid crystal display element or the liquid crystal display device containing the liquid crystal composition has advantages of wide nematic phase temperature range, suitable birefringence anisotropy, high resistivity, good ultraviolet resistance, high charge retention, low vapor pressure and the like.

The invention discloses a liquid crystal composition which contains compounds shown in formulae I and II and also can contain one or more compounds shown in formula II-B, wherein the definitions of all substituents are given. The composition disclosed by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon and moderate optical anisotropy delta n and can realize quick response of liquid crystal display.

The invention discloses a liquid crystal composition. The liquid crystal composition comprises one or more compounds as shown in formula I and one or more compounds as shown in formula II; and the liquid crystal composition comprises a compound as shown in II-A: FORMULA as shown in the specification, wherein each substituent group is defined. The composition provided by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon and moderate optical anisotropy delta n, and can realize quick response of liquid crystal display.

The invention discloses a liquid crystal composition which comprises one or more compounds shown in a formula I and one or more compounds shown in a formula II, and the liquid crystal composition comprises compounds shown in a formula II-A shown in the description, wherein the substituents are defined. The composition disclosed by the invention has low viscosity gamma 1, moderate dielectric anisotropy deltaepsilon, moderate or relatively great optical anisotropy deltan, and can be used for realizing quick response of liquid crystal display.

The invention discloses a liquid crystal composition, and a liquid crystal display element or display thereof. The liquid crystal composition contains a compound represented by general formula I, a compound represented by general formula II, and a compound represented by general formula III; and in the general formula I, the general formula II and the general formula III, R1 and R3 are C2-5 linear alkyl groups, R2 represents a C2-5 linear alkyl group or a C2-5 alkenyl group, R4 represents H or a C1-3 linear alkyl group, and X1 and X2 represent H or F. The liquid crystal composition has the advantages of fast response speed, large dielectric anisotropy, moderate optical anisotropy and good light and heat stability, and is especially suitable for being used in IPS liquid crystal display devices.

The invention relates to a liquid crystal composition. The liquid crystal composition comprises a compound with the general formula shown in the description. The composition disclosed by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon, moderate optical anisotropy delta n and a greater K value, and can be used for realizing rapid responses of the liquid crystal display.

The invention discloses a liquid crystal composite which comprises one or more compounds shown in the formula I and one or more compounds shown in the formula II. The liquid crystal composite comprises compounds shown in II-A (please see the molecular formula in the specification). All substituents are defined. The composite has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon and moderate or large optical anisotropy delta n, and can achieve quick responding of liquid crystal display.

The invention discloses a liquid crystal composition comprising one or more compounds represented by a formula I and one or more compounds represented by a formula II. The liquid crystal composition comprises a compound represented by II-A. Definitions for all substituents are given. The composition provided by the invention has low viscosity gamma1, moderate dielectric anisotropy Delta epsilon, and moderate optical anisotropy Delta n. With the composition, liquid crystal display fast response can be realized.

The invention relates to a liquid crystal composition. The liquid crystal composition comprises one or more of compounds disclosed as Formula I and one or more of compounds disclosed as Formula II. The liquid crystal composition comprises one or two compounds disclosed as Formula II-B in the compounds disclosed as Formula II, wherein the substituent groups are respectively defined in the specification. The composition has the advantages of low viscosity gamma1, moderate dielectric anisotropy DeltaEpsilon and moderate optical anisotropy Deltan, and can implement quick response of liquid crystal display.

The invention discloses a liquid crystal composition. The composition comprises one or more compounds as shown in a formula I and one or more compounds as shown in a formula II; meanwhile, the liquid crystal composition comprises a compound as shown in II-A in the specification, wherein each substituted group is given a definition. The composition provided by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta e and moderate optical anisotropy delta n, and can achieve rapid response of liquid crystal display.

The invention discloses a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The liquid crystal composition is prepared from a compound with the structural formula I (please see the formula in the specification), a compound with the structural formula II (please see the formula in the specification) and a compound with the structural formula III (please see the formula in the specification). The liquid crystal composition is prepared by mixing a series of liquid crystal materials of various structures, and therefore the liquid crystal composition has low viscosity and can achieve rapid responses; meanwhile, large dielectric anisotropy delta sigma and large optical anisotropy delta n are achieved; the small box thickness design can be achieved, rapid responses are achieved, a small viscosity-elasticity ratio is achieved, high optical and thermal stability is achieved, and the liquid crystal display element or liquid crystal display containing the liquid crystal composition has a wide nematic phase temperature range.

The invention provides a liquid crystal composition containing one or more compounds as shown in a formula I and one or more compounds as shown in a formula II; and the liquid crystal composition contains a compound as shown in a formula II-A, wherein all substituent groups are defined. The composition provided by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon and moderate optical anisotropy delta n and can realize rapid response of a liquid crystal display.