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Liquid crystal composition comprising polymerizable compounds and liquid crystal display element using same

A technology of polymeric compounds and liquid crystal compositions, which is applied in the direction of liquid crystal materials, chemical instruments and methods, nonlinear optics, etc., can solve the problems of not being easy to realize, speeding up the polymerization reaction, and difficult specifications of UV irradiation lamps, etc., so as to reduce the Effect of energy consumption and improvement of production efficiency

Inactive Publication Date: 2014-12-24
DIC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a technique for adjusting the polymerization reaction rate, it is disclosed that by using a liquid crystal compound having a terphenyl ring as a liquid crystal compound, the polymerization reaction rate can be accelerated to produce a PSA-type liquid crystal device (Patent Document 1), but by changing the skeleton of the polymerizable compound It is not easy to adapt the structure to the specifications of the UV irradiation lamp. In addition, there is a risk that the VHR of the PSA type liquid crystal element will be lowered due to the use of a liquid crystal compound having a terphenyl ring, which may adversely affect reliability.
[0005] Thus, it has not been easy to obtain a polymerizable liquid crystal composition for a PSA-type liquid crystal element satisfying both good productivity, high display performance, and quality performance by adjusting an appropriate polymerization reaction rate according to the UV irradiation lamp used. be realized

Method used

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  • Liquid crystal composition comprising polymerizable compounds and liquid crystal display element using same
  • Liquid crystal composition comprising polymerizable compounds and liquid crystal display element using same
  • Liquid crystal composition comprising polymerizable compounds and liquid crystal display element using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] The preparation contains a compound selected from general formula (I), a compound selected from general formula (IIIa), general formula (IIIb) and general formula (IIIc) or a compound selected from general formula (IVa), general formula (IVb) and general formula Liquid crystal composition LC-1 of the compound of (IVc). The constituent compounds and content ratios are as follows.

[0133]

[0134] Table 1 shows the physical properties of the above liquid crystal composition LC-1.

[0135] [Table 1]

[0136] T N-I (℃)

80.0

Δε

-3.5

Δn

0.087

[0137] For liquid crystal composition LC-1 99.6%, add

[0138]

[0139]

[0140] 0.3% of the indicated polymerizable compound, add

[0141]

[0142] The indicated polymerizable compound was uniformly dissolved at 0.1% to prepare a polymerizable liquid crystal composition CLC-1.

Embodiment 2

[0152] For liquid crystal composition LC-1 99.6%, add

[0153]

[0154] 0.3% of the indicated polymerizable compound, add

[0155]

[0156] The indicated polymerizable compound was uniformly dissolved at 0.1% to prepare a polymerizable liquid crystal composition CLC-4.

Embodiment 3

[0170] The preparation contains the compound selected from general formula (I), the compound selected from general formula (IIIa), general formula (IIIb) and general formula (IIIc) or the compound selected from general formula (IVa), general formula (IVb) and general formula Liquid crystal composition LC-2 of the compound of (IVc). The constituent compounds and content ratios are as follows.

[0171]

[0172] Table 2 shows the physical properties of the above liquid crystal composition LC-2.

[0173] [table 3]

[0174] T N-I (℃)

75.3

Δε

-2.7

Δn

0.134

[0175] For liquid crystal composition LC-2 99.7%, add

[0176]

[0177] 0.2% of the indicated polymerizable compound, add

[0178]

[0179] The indicated polymerizable compound was uniformly dissolved at 0.1% to prepare a polymerizable liquid crystal composition CLC-7.

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Abstract

A polymerizable liquid crystal composition suitable for practical use, said polymerizable liquid crystal composition comprising two or more kinds of polymerizable compounds having different polymerization rates and a liquid crystal compound, characterized in that the polymerization rates of the polymerizable compounds contained therein can be easily adapted to the specification of a UV irradiation lamp so that the pretilt angle affecting the display performance can be easily controlled and the problem of non-polymerization of a polymerizable compound, which exerts effects on display defects, image persistence, etc., can be overcome, thereby enabling the fabrication of a PSA type liquid crystal display element having excellent performance and high reliability.

Description

technical field [0001] The present invention relates to a liquid crystal composition containing a polymerizable compound, and further relates to a liquid crystal display device using the liquid crystal composition. Background technique [0002] PSA (Polymer Sustained Alignment: Polymer maintains alignment, including PS liquid crystal display element (polymer stabilized: polymer stabilized).) type liquid crystal display device has a polymer structure formed in the cell in order to control the pretilt angle of liquid crystal molecules structure, because of its high-speed response and high contrast, it has been practically used as a next-generation liquid crystal display element. [0003] The manufacture of the PSA-type liquid crystal display element is carried out by injecting a polymerizable liquid crystal composition containing a liquid crystal compound and a polymerizable compound between the substrates, and polymerizing the polymerizable compound in a state where a voltage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/42C08F220/10G02F1/13
CPCC09K19/44C09K19/46G02F1/1334C08F222/1025C08F220/10C09K19/42C09K19/2014C09K2019/0448C09K2019/122C09K2019/123G02F1/13C09K19/3001C09K19/3066C09K19/3402C09K19/542C09K2019/3425C09K2019/548
Inventor 栗泽和树田中芳清川上正太郎
Owner DIC CORPORATION
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