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Wide nematic phase mixed liquid crystal material with low threshold value

A technology of mixing liquid crystals and liquid crystal materials, applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve problems such as difficult balance of performance parameters, and achieve the effect of fast response speed

Active Publication Date: 2012-01-04
XIAN CAIJING OPTO ELECTRICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wide nematic mixed liquid crystal material with a low threshold, which solves the problem that the performance parameters of the existing liquid crystal mixed materials are difficult to balance

Method used

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  • Wide nematic phase mixed liquid crystal material with low threshold value
  • Wide nematic phase mixed liquid crystal material with low threshold value
  • Wide nematic phase mixed liquid crystal material with low threshold value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]

[0040] Taking 50g of mixed liquid crystal material as an example to describe its preparation process: use an electronic balance to weigh the following eleven substances:

[0041] Monomer liquid crystal

[0042] Put the above eleven substances into a 100ml glass three-necked bottle with magnetic stirring function, under the protection of nitrogen, and under the condition of heating temperature of 50°C, stir while heating, the mixture in the bottle is melted from solid to In liquid state, heat for 3 minutes. When the mixture in the bottle reaches 70°C, keep warm for 30 minutes. After heat preservation, cool down to room temperature naturally to form a milky white opaque nematic mixed liquid crystal material, which is sealed and stored.

Embodiment 2

[0044]

[0045] Take 50g of mixed liquid crystal material as an example to describe its preparation process: Use an electronic balance to weigh the following twelve substances:

[0046] Monomer liquid crystal

[0047] Put the above twelve substances into a 100ml glass three-neck bottle with magnetic stirring function, under the protection of nitrogen, and under the condition of heating temperature of 50°C, stir while heating, the mixture in the bottle is melted from solid to In liquid state, heat for 3 minutes. When the mixture in the bottle reaches 70°C, keep warm for 30 minutes. After heat preservation, cool down to room temperature naturally to form a milky white opaque nematic mixed liquid crystal material, which is sealed and stored.

Embodiment 3

[0049]

[0050]

[0051] Take 50g of mixed liquid crystal material as an example to describe its preparation process: Use an electronic balance to weigh the following twelve substances:

[0052] Monomer liquid crystal

[0053] Put the above twelve substances into a 100ml glass three-neck bottle with magnetic stirring function, under the protection of nitrogen, and under the condition of heating temperature of 50°C, stir while heating, the mixture in the bottle is melted from solid to In liquid state, heat for 3 minutes. When the mixture in the bottle reaches 70°C, keep warm for 30 minutes. After heat preservation, cool down to room temperature naturally to form a milky white opaque nematic mixed liquid crystal material, which is sealed and stored.

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Abstract

The invention provides a wide nematic phase mixed liquid crystal material with a low threshold value. Four compounds are adopted; a component A has a bicyclohexane structure and the lowest viscosity, and contributes to improving the response speed of the mixed liquid crystal material in a display device; a component B is a compound having a framework that cyclohexane is directly connected with a benzene ring and containing a fluorine substituent, and is used for forming the nematic phase of liquid crystal and inhibiting a smectic phase of the mixed liquid crystal material; a component C has a polyfluorophenyl structure, is connected with the cyclohexane through an intermediate bridge bond, can provide certain dielectric anisotropy and has wide temperature width of the nematic phase; and a component D has a polyfluorobiphenyl structure and has the effect of greatly reducing the threshold voltage of the mixed liquid crystal material. The liquid crystal material prepared has a wide nematic phase of which the temperature width is higher than 140DEG C, has low threshold voltage and saturation voltage, and high response speed, and is suitable for liquid crystal display devices with positive dielectric anisotropy.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a wide nematic mixed liquid crystal material with low threshold. Background technique [0002] Information technology has always been the most important symbol of the progress and development of human society. The emergence of computers in the 1950s accelerated the pace of information technology development and put forward more abundant requirements for information display technology. Barcode printing was used for early information output, which was far from being able to satisfy synchronous display, and it needed to be compiled, and it could not meet the needs of intuitive display. The invention of the cathode ray tube (CRT) realized information visualization, and the direct output of dynamic images greatly accelerated the progress of science and technology. footsteps. However, with the development of science and technology, mobile electronic produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/30
Inventor 邓登李建杜渭松张鑫惠培华
Owner XIAN CAIJING OPTO ELECTRICAL SCI & TECH
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