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Liquid crystal composition and its application

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of insufficient voltage, insufficient response of liquid crystal materials, low charge retention rate, etc., and achieve low viscosity and good low temperature storage stability. , the effect of high charge retention rate

Active Publication Date: 2020-11-03
西安晶奥量新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, TFT-LCD still has the problems of liquid crystal material still not responding fast enough, the voltage is not low enough, and the charge retention rate is low.

Method used

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  • Liquid crystal composition and its application
  • Liquid crystal composition and its application
  • Liquid crystal composition and its application

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Embodiment Construction

[0036]The invention provides a liquid crystal composition, which comprises the following components by weight percentage: (1) 1-80% of one or more compounds represented by the general formula I; (2) 1-50% of the general formula One or more of the compounds represented by II; (3) 1 to 30% of one or more of the compounds represented by the general formula III; (4) 1 to 25% of the compounds represented by the general formula IV one or more;

[0037] Wherein, the compound structure represented by general formula I is as follows:

[0038]

[0039] where R 1 , R 2 Independently represented as an alkyl group with 1 to 7 C atoms, or an alkenyl group with 2 to 7 C atoms, R 21 , R 22 One or more H atoms in are substituted or unsubstituted by halogen, A 21 、A 22 Independent representatives are trans-1,4-cyclohexylene or 1,4-phenylene;

[0040] Wherein, the compound structure represented by general formula III is as follows:

[0041]

[0042] where R 3 , R 4 Independently ...

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Abstract

The invention provides a liquid crystal composition which comprises the following components by weight: 1%-80% of a component A, 1%-50% of a component B, 1%-30% of a component C and 1%-25% of a component D, wherein the component A is one or more compounds represented by a formula I; the component B is one or more compounds represented by a formula II; the component C is one or more compounds represented by a formula III; the component D is one or more compounds represented by a formula IV; and the liquid crystal composition has an optical birefringence delta n of 0.08-0.15 and has a moderate refraction range. The liquid crystal composition provided by the invention has low viscosity, good comprehensive properties of dielectric anisotropy, clearing point and optical anisotropy, can increasea corresponding speed of a liquid crystal display, can be used in a TN, ADS, FFS or IPS model display to significantly improve a display effect of the liquid crystal display, and is especially suitable for fast response liquid crystal display devices.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, and specifically discloses a brand new liquid crystal composition and its application in the field of liquid crystal displays. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecular compounds that have both fluidity of liquid and anisotropy of crystal at a certain temperature. Liquid crystal display devices work by utilizing the optical anisotropy and dielectric anisotropy of the liquid crystal material itself, and have been widely used at present. Using different characteristics and working modes of liquid crystal materials, devices can be designed in different working modes, mainly including the following: dynamic scattering (dynamic scattering, DS) type, electric field controlled birefringence (electrically controlled birefringence, ECB) type, twisted Nematic (twisted nematic, TN) type, ferroelectric liquid crystal (FLC) type, guest-hos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44
CPCC09K19/44
Inventor 吕维军赵文李坤李超张艳丽陈锋金立诺
Owner 西安晶奥量新材料有限公司
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