Liquid crystal composition

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of increasing panel power consumption, reducing panel aperture ratio, etc., and achieve low birefringence anisotropy, low rotational viscosity, phase The effect of a wide temperature range

Active Publication Date: 2015-05-13
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-resolution products, as the PPI increases and the pixel size decreases, the aperture ratio of the panel decreases sharply. At this time, in order to ensure the brightness of the panel, it is necessary to increase the brightness of the backlight or the number of backlights, but this will greatly increase the power consumption of the panel.

Method used

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Experimental program
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Embodiment 1

[0056] The liquid crystal composition of the present embodiment comprises the following compounds by percentage,

[0057]

[0058]

[0059] The cyclohexyl groups in all the above structural formulas are in the trans configuration. The physical parameters of the composition are as follows:

[0060] Δn=0.093; Δε=7.5; Cp=89°C; V10=1.62V; τ=10.2ms; T=5.9.

[0061] From the comparison between Example 1 and Comparative Example, it can be seen that in Example 1, 5% of the type I compound is used, Δε is increased, V10 is decreased, and the transmittance is increased by 11%.

Embodiment 2

[0063] The liquid crystal composition of the present embodiment comprises the following compounds by percentage,

[0064]

[0065] The cyclohexyl groups in all the above structural formulas are in the trans configuration. The physical parameters of the composition are as follows:

[0066] Δn=0.089; Δε=7.9; Cp=91°C; V10=1.58V; τ=8.9ms; T=5.8.

Embodiment 3

[0068] The liquid crystal composition of the present embodiment comprises the following compounds by percentage,

[0069]

[0070] The cyclohexyl groups in all the above structural formulas are in the trans configuration. The physical parameters of the composition are as follows:

[0071] Δn=0.073; Δε=7.2; Cp=99°C; V10=1.64V; τ=9.4ms; T=5.5.

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Abstract

The invention discloses a liquid crystal composition. The liquid crystal composition has the characteristics of high-definition light spots, high dielectric anisotropy, low driving voltage and the like, and the liquid crystal composition has higher order degree, so that the influence of disordered voltage in a panel on liquid crystal alignment is little. The leaking light between sub-pixels can be effectively reduced, so that the line width of a black matrix is reduced, the aperture opening ratio is increased, and the transmittance is improved. The liquid crystal composition is suitable for liquid crystal display elements driven by active matrix thin film transistors (AM-TFT) with positive dielectric anisotropy. The liquid crystal composition is particularly suitable for large-size liquid crystal televisions of 200-800 ppi.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition with high-definition bright spots, large dielectric anisotropy, and low driving voltage. The influence of liquid crystal alignment is small. It can effectively reduce light leakage between sub-pixels, thereby reducing the line width of the black matrix (Black Matrix) and increasing the aperture ratio. The liquid crystal composition is suitable for a liquid crystal display element driven by an active matrix thin film transistor (AM-TFT) with positive dielectric anisotropy. Especially suitable for large-size LCD TVs with 200-800ppi. Background technique [0002] In recent decades, with the rapid development of information technology and people's continuous pursuit of information display methods, liquid crystal display (LCD), as an important application of liquid crystal, has achieved the most rapid development. The optical anisotropy and diele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/46C09K19/44
Inventor 李锐丰景义温刚乔云霞崔青徐凯
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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