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TN first minimum nematic liquid crystal mixture and method for preparing same

A mixed liquid crystal, extremely small technology, applied in the direction of liquid crystal materials, chemical instruments and methods, etc., to achieve the effects of good response time, improved clearing point, and stable performance

Active Publication Date: 2013-09-25
YANTAI XIANHUA CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nematic phase TN (Twist Nematic) first extremely small liquid crystal mixture currently used or reported focuses on the performance of one aspect of the display effect, such as ultra-wide temperature or low temperature fast response, the same TN first extremely small liquid crystal mixture has ultra-wide There is no report on comprehensive properties such as rapid response to high temperature and low temperature, especially the threshold voltage (Voltage Threshold, Vth) Vth≤1.2V

Method used

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  • TN first minimum nematic liquid crystal mixture and method for preparing same
  • TN first minimum nematic liquid crystal mixture and method for preparing same
  • TN first minimum nematic liquid crystal mixture and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Compound Percentage / %

[0058] 3CCP2F 10

[0059] 4CCP2F 10

[0060] 5CCP2F 12

[0061] 3CCePF 8

[0062] 5CCePF 12

[0063] 3CCPET2 3

[0064] 3CC-CC3 2

[0065] 3CC-P3F 6

[0066] 5CC-P3F 5

[0067] 3CC5 4

[0068] 3CC4 4

[0069] 3CPF 2

[0070] 2P-PN2F 2

[0071] 3P-PN2F 5

[0072] 1-4bP-PN2F 5

[0073] 5CPN2F 10

[0074] The proportion of various liquid crystal compounds in the bottle of TN first minimal mixed liquid crystal formula is: 33% of type I liquid crystal compound, 10% of type II liquid crystal compound, 57% of type III liquid crystal compound, and 0% of type IV liquid crystal compound. Weigh each liquid crystal compound according to the proportion of the formula, heat and stir to dissolve into a fluid state after weighing, vacuumize nitrogen replacement to maintain a vacuum of 50KPa, heat to a clear point, naturally cool to room temperature while stirring, and filter. Filtered TN first minimal nematic phase mixed liquid crystal, then add t...

Embodiment 2

[0079] Compound Percentage / %

[0080] 5CCP2F 8

[0081] 3CCPr 5

[0082] 3CCP2F 4

[0083] 3CCePr 8

[0084] 3CC4 4

[0085] 3CC5 4

[0086] 5CCv 3

[0087] 3CCePF 5

[0088] 5CCePF 10

[0089] 3CCPET2 3

[0090] 3CPP2F 5

[0091] 5CCP2F 5

[0092] 3CPtPET2 3

[0093] 3CC-P3F 5

[0094] 5CC-P3F 5

[0095] 2P-PN2F 2

[0096] 3P-PN2F 5

[0097] 1-4bP-PN2F 5

[0098] 5CPN2F 11

[0099] The proportion of various liquid crystal compounds in the bottle of TN first minimal mixed liquid crystal formula is: 33% of type I liquid crystal compounds, 11% of type II liquid crystal compounds, 43% of type III liquid crystal compounds, and 13% of type IV liquid crystal compounds. Weigh each liquid crystal compound according to the proportion of the formula, heat and stir to dissolve into a fluid state after weighing, vacuumize nitrogen replacement to maintain a vacuum of 100Pa, heat to a clear point, naturally cool to room temperature while stirring, and filter. Filtered TN f...

Embodiment 4

[0127] Compound Percentage / %

[0128] 2P-PN2F 1

[0129] 3P-PN2F 2

[0130] 5P-PN2F 2

[0131] 5CPN2F 7

[0132] 3CPET2 10

[0133] 5CP2F 3

[0134] 3CC4 5

[0135] 3CC5 5

[0136] 2CCP2F 9

[0137] 3CCP2F 13

[0138] 5CCP2F 13

[0139] 3CCePF 8

[0140] 4CCePF6

[0141] 5CCePF 10

[0142] 3CCPF 3

[0143] 3CCPET2 3

[0144] The proportion of various liquid crystal compounds in the bottle of TN first minimal mixed liquid crystal formula is: 12% of type I liquid crystal compound, 10% of type II liquid crystal compound, 78% of type III liquid crystal compound, and 0% of type IV liquid crystal compound. Weigh each liquid crystal compound according to the proportion of the formula, heat and stir to dissolve into a fluid state after weighing, vacuumize nitrogen replacement to maintain a vacuum of 2KPa, heat to a clear point, naturally cool to room temperature while stirring, and filter. The filtered TN first minimal nematic mixed liquid crystal, and then add the abo...

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Abstract

The invention provides a TN first minimum nematic liquid crystal mixture, which comprises 8 to 35 percent of at least one liquid crystal compound shown in a formula (I), 8 to 15 percent of at least one liquid crystal compound shown in a formula (II), 37 to 80 percent of at least one liquid crystal compound shown in a formula (III) and 0 to 24 percent of an optional liquid crystal compound shown in a formula (IV). An antistatic compound is added in the preparation process. The mixing process is carried out in a closed container with the vacuum degree between -100 and -50 KPa. Because the liquid crystal mixture adopts the liquid crystal compounds with good low-temperature property and big dielectric constant as well as the liquid crystal compounds with high clearing point and less temperature dependence, and is added with the antistatic compound, so that the liquid crystal mixture is good in comprehensive property.

Description

technical field [0001] The invention relates to a liquid crystal material, in particular to a TN first minimal nematic phase mixed liquid crystal and a preparation method thereof. Background technique [0002] With the development and progress of display technology, people have higher and higher requirements for display effect, and put forward high requirements for the comprehensive performance of liquid crystal display. The nematic phase TN (Twist Nematic) first extremely small liquid crystal mixture currently used or reported focuses on the performance of one aspect of the display effect, such as ultra-wide temperature or low temperature fast response, the same TN first extremely small liquid crystal mixture has ultra-wide Comprehensive properties such as high temperature and low temperature fast response have not been reported, especially the threshold voltage (Voltage Threshold, Vth) Vth≤1.2V. Contents of the invention [0003] The technical problem to be solved by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/30C09K19/20C09K19/18C09K19/54
Inventor 王培祥丰景义丰佩川刘录黄善兴马艳
Owner YANTAI XIANHUA CHEM TECH CO LTD
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