Quick-response nematic phase type liquid crystal composite

A liquid crystal composition, fast-response technology, applied in liquid crystal materials, optics, instruments, etc., to achieve the effects of wide nematic temperature range, low threshold voltage, and appropriate optical anisotropy

Active Publication Date: 2013-09-11
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, no single liquid crystal compound has been found that can meet the above performance requirements. It is necessary to combine multiple liquid crystal compounds into a liquid crystal composition to meet the performance requirements of liquid crystal display materials.

Method used

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  • Quick-response nematic phase type liquid crystal composite
  • Quick-response nematic phase type liquid crystal composite
  • Quick-response nematic phase type liquid crystal composite

Examples

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Embodiment Construction

[0029] Below in conjunction with embodiment the present invention is described in further detail:

[0030] The parts involved in the following examples are all mass percentages, and the temperature unit is ° C. The specific meanings and test conditions of other symbols are as follows:

[0031] c.p. indicates the clearing point of the liquid crystal (°C); S-N indicates the melting point (°C) from the crystalline state to the nematic phase of the liquid crystal; Δn indicates the optical anisotropy, △n=n o -n e , where n o is the refractive index of ordinary light, n e is the refractive index of extraordinary light, test conditions: 589nm, 25°C; △ε means dielectric anisotropy, △ε=ε ∥ -ε ⊥ , where ε ∥ is the dielectric constant parallel to the molecular axis, ε ⊥ is the dielectric constant perpendicular to the molecular axis, test conditions: 25°C, 1KHz, HP4284A, 5.2 micron TN left-handed cell; τ represents the response time (ms), test instrument: DMS-501, test conditions: 2...

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Abstract

The invention discloses a quick-response nematic phase type liquid crystal composite. The liquid crystal composite comprises 1%-40% (mass percentage) of liquid crystal compound as shown in structural formula I, 5%-70% (mass percentage) of liquid crystal compound as shown in structural formula II, 5%-50% (mass percentage) of liquid crystal compound as shown in structural formula III, 0%-40% (mass percentage) of liquid crystal compound as shown in structural formula IV, and 0%-40% (mass percentage) of liquid crystal compound as shown in structural formula V; the sum of mass percentages of the liquid crystal compounds respectively as shown in structural formulae I, II, III, IV and V is 100%; moreover, an optically active compound occupying 0%-0.5% of the sum of mass of the liquid crystal composite is also added. The composite has low rotary viscosity, quick response speed and proper positive dielectric anisotropy, and is especially suitable for manufacturing quick-response active matrix TN-TFT and IPS-TFT liquid crystal display elements and liquid crystal displayers.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a fast-response nematic liquid crystal composition which can be used for manufacturing TFT-LCD. Background technique [0002] In recent years, liquid crystal displays have replaced traditional cathode ray tube displays and become mainstream products in the field of information display today, widely used in various displays such as instruments, computers, and televisions. According to different liquid crystal display methods, liquid crystal display elements can be divided into twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane (IPS) mode, vertical alignment (VA) mode and other modes. [0003] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is one of the most promising display technologies in the 21st century and is widely used in notebook computers, LCD TVs and other fields. TFT-LCD is an active matrix display formed by introducing thin film transistor swit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/46C09K19/44G02F1/1333
Inventor 夏治国华瑞茂丰景义贵丽红徐凯毛联波陈雪娇
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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