Nematic liquid crystal composition

A technology of liquid crystal composition and liquid crystal compound, which is applied in the direction of liquid crystal materials, chemical instruments and methods, etc.

Inactive Publication Date: 2009-04-15
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 4. Frequency and temperature dependence of low threshold voltage

Method used

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  • Nematic liquid crystal composition
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] II-1 2% Cp[°C] 93.0

[0115] IVA-1 16% Δn[20°C, 589nm] 0.128

[0116] IVD-1 11% V 10 [V, 20°C] 1.18

[0117] IIIA-4 7% S 1.07

[0118] I B-3 6% τ[20°C] 200

[0119] IC-2 10%

[0120] VIA-2 3%

[0121] VIB-1 3%

[0122] VB-1 10%

[0123] VB-2 10%

[0124] VB-3 10%

[0125] VIII-1 4%

[0126] VIII-2 4%

[0127] VIII-3 4%

[0128] Combination before VIII-3

[0129] S811%

[0130] 0.67 of the total amount

[0131]

Embodiment 2

[0133] IVA-1 15% Cp[°C] 95

[0134] IVD-1 11% Δn[20°C, 589nm] 0.138

[0135] IVD-3 3% V 10 [V, 20°C] 1.5

[0136] I A-1 4% S 1.06

[0137] I C-2 6% τ[20°C] 150

[0138] VIB-1 5%

[0139] VIB-3 4%

[0140] VB-1 4%

[0141] VB-2 4%

[0142] VIII-1 5%

[0143] VIII-2 5%

[0144] II-1 8%

[0145] IB-3 14%

[0146] I C-3 12%

[0147] Compounding before I C-3

[0148] S811%

[0149] 0.70 of the total amount

[0150]

Embodiment 3

[0152] II-1 18% Cp[°C] 88.0

[0153] IVA-1 15% Δn[20°C, 589nm] 0.170

[0154] IVD-1 9% V 10 [V, 20°C] 1.18

[0155] I B-3 5% S 1.07

[0156] I C-3 5% τ[20°C] 160

[0157] IC-2 10%

[0158] VIA-1 3%

[0159] VIB-1 4%

[0160] VIB-3 4%

[0161] VB-1 10%

[0162] VB-2 10%

[0163] VB-3 5%

[0164] VIII-1 2%

[0165] Combined before VIII1+

[0166] R811%

[0167] 0.83 of the total amount

[0168]

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Abstract

The invention provides a nematic liquid crystal composite, which comprises a nematic liquid crystal compound expressed by a chemical formula I, wherein, R1 is an alkyl of 0-12 carbon atoms; one or two non-adjacent groups can be substituted by -CH equal to CH-; L1 and L2 are independent H or F, the content of which is 5-40%. The composite has excellent performance and very low total response time (ttot equals to ton plus toff). In particular, at low temperatures, e.g. -20 DEG C, the composite still has very good response. Besides, the composite has a very steep electro-distortion curve and very good temperature and frequency dependence and can be applied to high-loop-quantity STN-LCD of more than 128 loops.

Description

technical field [0001] The present invention relates to a kind of liquid crystal mixture, relate to a kind of viscosity especially, relate to a kind of with small viscosity, big elastic modulus ratio K33 / K11, wide phase transition temperature range, thus can be used for making fast response high channel number STN-LCD , especially suitable for the manufacture of color STN-LCD liquid crystal mixture. Background technique [0002] Liquid crystal display (LCD), as an important application of liquid crystal-a special material, has been widely concerned by people since the discovery of liquid crystal properties. In recent decades, especially with the rapid development of information technology and people's continuous pursuit of information display methods in the past ten years, liquid crystal display has achieved the most rapid development. Today, liquid crystal displays are being displayed in front of people in a variety of forms, and many of its products are becoming fashionab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/18
Inventor 陈海光杭德余王广涛姜天孟
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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