Polymer liquid-crystal composition and liquid crystal display apparatus comprising same

A polymeric liquid crystal and composition technology, applied in liquid crystal materials, instruments, nonlinear optics, etc., can solve problems such as increased energy consumption, uneven display, and impact on optical quality

Active Publication Date: 2017-10-24
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, there are still many defects in the current polymerizable liquid crystal monomers. For example, the melting point of the polymerizable liquid crystal monomers recorded in US Pat. No. 6,136,225 is too high. operation, which greatly increases energy consumption, and at high temperatures, it is easy to cause defects such as uneven alignment and abnormal polymerization that seriously affect optical quality
In addition, in practical applications, various other problems also emerge in endlessly, such as: the polymerization speed is slow or fast, it is difficult to control, the residual amount after polymerization is too high, and there will ...

Method used

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  • Polymer liquid-crystal composition and liquid crystal display apparatus comprising same
  • Polymer liquid-crystal composition and liquid crystal display apparatus comprising same
  • Polymer liquid-crystal composition and liquid crystal display apparatus comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] The liquid crystal composition LC-2 of Example 1 was formulated according to the compounds and weight percentages listed in Table 3, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0168] Table 3 liquid crystal composition formula and test performance thereof

[0169]

[0170] Add 0.3% of the compound represented by the following formula III-1 to 99.7% of the above-mentioned liquid crystal composition LC-2 to prepare a polymerizable liquid crystal composition LCM-2. The physical properties of the obtained LCM-2 are almost equal to those of LC-2. no change.

[0171]

[0172] The residual RM of LCM-1 was tested at 0.105%.

[0173] Compared with Example 1 and Comparative Example 1, under the conditions that the clearing point, refractive index anisotropy, and dielectric anisotropy are basically the same, RM has a faster polymerization rate, lower residue, and has a ...

Embodiment 2

[0182] The liquid crystal composition LC-4 of Example 2 was formulated according to the compounds and weight percentages listed in Table 5, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0183] Table 5 liquid crystal composition formula and test performance thereof

[0184]

[0185] Add 0.25% of the compounds represented by the following formula III-1 and 0.15% respectively to 99.6% of the above-mentioned liquid crystal composition LC-4 to prepare the polymerizable liquid crystal composition LCM-4, and the resulting LCM The physical property values ​​of -4 hardly changed from those of LC-4.

[0186]

[0187] The RM residue tested for LCM-4 was 0.08%.

[0188] Compared with Example 2, under the condition that the clearing point, refractive index anisotropy, and dielectric anisotropy are basically the same, RM has a faster polymerization rate, lower residue, and has a st...

Embodiment 3

[0197] The liquid crystal composition LC-6 of Example 3 was formulated according to the compounds and weight percentages listed in Table 6, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0198] Table 6 liquid crystal composition formula and test performance thereof

[0199]

[0200] Add 0.25% of the compound represented by the following formula III-1 to 99.75% of the above-mentioned liquid crystal composition LC-6 to prepare the polymerizable liquid crystal composition LCM-6. The physical properties of the obtained LCM-6 are almost equal to those of LC-6 no change.

[0201]

[0202] The RM residue tested for LCM-6 was 0.117%.

[0203] Compared with Example 3 and Comparative Example 3, under the conditions that the clearing point, refractive index anisotropy, and dielectric anisotropy are basically the same, RM has a faster polymerization rate, lower residue, and has a ...

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Abstract

The invention discloses a polymer liquid-crystal composition. The polymer liquid-crystal composition comprises a first component, a second component and a third component, wherein the first component is selected from a group consisting of a general formula I-1, a general formula I-2 and a general formula I-3 as well as an assembly thereof; the second component is selected from a group consisting of a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 as well as an assembly thereof; the third component is selected from a general formula III. The invention further discloses a liquid crystal display apparatus comprising the polymer liquid-crystal composition. The polymer liquid-crystal composition provided by the invention has proper refractive index anisotropy, proper dielectric anisotropy, a relatively wide nematic phase temperature range, a relatively high clearing point and relatively low RM residues, is stronger in anchoring effect of polymer RM, greatly reduces risk of bad display problems such as image ghost and uneven image display, and can be suitable for the liquid crystal display apparatus, so that the liquid crystal display apparatus has the characteristics such as good display at high temperature. The structural formula of I-1, I-2, I-3, II-1, II-2, II-3, II-4 and III are shown in the description.

Description

technical field [0001] The invention relates to a liquid crystal composition and its application, in particular to a polymerizable liquid crystal composition and its application in a liquid crystal display comprising the polymerizable liquid crystal composition. Background technique [0002] Polymer Sustained Alignment (PSA) type liquid crystal display device is a device in which a polymer structure is formed in the cell in order to control the pretilt angle of liquid crystal molecules. Liquid crystal display elements are used. [0003] The manufacture of the PSA type liquid crystal display element is carried out by the following method: the liquid crystal composition containing the liquid crystal compound and the polymerizable compound is injected between the substrates, and the polymerizable liquid crystal compound is polymerized under the state that the voltage is applied to align the liquid crystal molecules, so that The orientation of the liquid crystal molecules is fi...

Claims

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Application Information

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IPC IPC(8): C09K19/46G02F1/1333
CPCG02F1/1333C09K19/46
Inventor 马文阳韩文明徐海彬王立威
Owner JIANGSU HECHENG DISPLAY TECHCO
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