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Liquid crystal composition and display device containing same

A liquid crystal composition and display device technology, applied in active matrix liquid crystal display devices, in the field of liquid crystal compositions with low temperature storage stability, can solve the problem of low contrast ratio, difficulty in manufacturing grayscale, and high angle dependence of matrix liquid crystal displays And other issues

Active Publication Date: 2014-09-17
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But matrix liquid crystal displays have relatively low contrast ratios, relatively high angle dependence, and difficulty in producing gray scale in these displays

Method used

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  • Liquid crystal composition and display device containing same
  • Liquid crystal composition and display device containing same
  • Liquid crystal composition and display device containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Prepare the liquid crystal composition of the present invention by each compound listed in Table 3 and the weight percentage, it is filled between the two substrates of the liquid crystal display for performance testing, and the test data are shown in the following table:

[0127] Table 3 liquid crystal composition formula and test performance thereof

[0128]

[0129] Compared with the comparative example, the liquid crystal composition has suitable refractive index anisotropy and dielectric anisotropy, low rotational viscosity and significantly low γ1 / (Δn) 2 The value of , which has the advantages of fast response speed, good display effect and low temperature storage stability, is suitable for display devices.

Embodiment 2

[0131] The liquid crystal composition of the present invention is prepared by each compound listed in Table 4 and the weight percentage, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0132] Table 4 liquid crystal composition formula and test performance thereof

[0133]

[0134]

[0135] Compared with the comparative example, the liquid crystal composition has suitable refractive index anisotropy and dielectric anisotropy, low rotational viscosity and significantly low γ1 / (Δn) 2 The value of , which has the advantages of fast response speed, good display effect and low temperature storage stability, is suitable for display devices.

Embodiment 3

[0137] The liquid crystal composition of the present invention is prepared by each compound listed in Table 5 and the weight percentage, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0138] Table 5 liquid crystal composition formula and test performance thereof

[0139]

[0140] Compared with the comparative example, the liquid crystal composition has suitable refractive index anisotropy, dielectric anisotropy and elastic constant ratio, low rotational viscosity and significantly low γ1 / (Δn) 2 The value of , which has the advantages of fast response speed, good display effect and low temperature storage stability, is suitable for display devices.

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PUM

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Abstract

The invention provides a liquid crystal composition and application thereof. The liquid crystal composition comprises at least one compound of general formula (I), at least one compound of general formula (II), at least one compound of general formula (III) and at least one compound containing a -C is equivalent to C-group. The liquid crystal composition provided by the invention has faster response speed and good low-temperature storage stability. The invention also provides an active matrix liquid crystal display device containing the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition, in particular to a liquid crystal composition with appropriate optical anisotropy and dielectric anisotropy, fast response speed and good low-temperature storage stability and its active matrix Applications in liquid crystal display devices. 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 materials are mainly used as dielectrics in displays because the optical properties of such substances can be changed by an applied voltage. Electro-optical devices based on liquid crystals are well known to those skilled in the art, such devices are cells with dynamic scattering, DAP (deformation in aligned phase) cells, guest / host cells, TN cells with twisted nematic structure, STN (Super Twisted Nematic) battery, SBE (Super Birefringenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/13
Inventor 韩文明谭玉东马定福王毅明
Owner JIANGSU HECHENG DISPLAY TECH CO LTD