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Manufacture method of a liquid crystal display element, polymer composition and liquid crystal display element

A technology for liquid crystal display elements and manufacturing methods, applied in the directions of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of no record of reactive mesogens, inability to exclude display properties, voltage retention properties, and large amount of ultraviolet radiation, etc. Excellent display properties, loss of display properties, and effect of reducing manufacturing costs

Active Publication Date: 2011-04-06
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Non-Patent Document 1, there is no indication of what kind of reactive mesogen should be used in what amount, and the necessary amount of ultraviolet irradiation is still large, and problems with display properties, especially voltage retention properties cannot be ruled out.

Method used

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  • Manufacture method of a liquid crystal display element, polymer composition and liquid crystal display element
  • Manufacture method of a liquid crystal display element, polymer composition and liquid crystal display element
  • Manufacture method of a liquid crystal display element, polymer composition and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0200] 110g (0.50mol) of 2,3,5-tricarboxycyclopentylacetic dianhydride as tetracarboxylic dianhydride, 43g (0.40mol) of p-phenylenediamine as diamine and 52g (0.10mol) of 3-(3,5-Diaminobenzoyloxy)cholestane was dissolved in 830 g of N-methyl-2-pyrrolidone, and the reaction was carried out at 60° C. for 6 hours. A small amount of the obtained polyamic acid solution was collected, and N-methyl-2-pyrrolidone was added to form a solution with a polyamic acid concentration of 10% by weight. The measured solution viscosity was 60 mPa·s.

[0201] Next, 1,900 g of N-methyl-2-pyrrolidone was added to the obtained polyamic acid solution, 40 g of pyridine and 51 g of acetic anhydride were added, and a dehydration ring-closure reaction was performed at 110° C. for 4 hours. After the dehydration ring-closing reaction, the solvent in the system is replaced with a new N-methyl-2-pyrrolidone solvent (in this operation, the pyridine and acetic anhydride used in the dehydration ring-closing rea...

Embodiment 1

[0203]

[0204] In the solution containing polyimide (PI-1) obtained in the above Synthesis Example 1 as the polymer (A), N-methyl-2-pyrrolidone (NMP) and butyl cellosolve (BC ), then add the compound represented by the following formula (B-1) as (B) compound, and be 20 parts by weight relative to 100 parts by weight of the above-mentioned (A) polymer, forming a solvent composition NMP:BC=50:50 (weight Ratio), a solution with a solid content concentration of 6.0% by weight. This solution was filtered using a filter with a pore size of 1 μm to prepare a polymer composition.

[0205]

[0206]

[0207] Using the polymer composition prepared above, a total of 6 liquid crystal display elements were produced by changing the pattern of the transparent electrode (2 types) and the amount of ultraviolet irradiation (3 levels), and evaluated as follows.

[0208] [Fabrication of Liquid Crystal Cells with Unpatterned Transparent Electrodes]

[0209] Using a liquid crystal alignmen...

Embodiment 2～5

[0230] In the above-mentioned Example 1, except that the type and amount of the compound (B) are as described in Table 1, a polymer composition was prepared in the same manner as in Example 1, and various liquid crystal cells were manufactured and evaluated using the polymer composition. .

[0231] The evaluation results are shown in Table 1.

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Abstract

The invention relates to a manufacture method of a liquid crystal display element, a polymer composition and a liquid crystal display element. The manufacture method of the liquid crystal display element has features of wide visual angle, quick response speed of the liquid crystal molecule, excellent display property and long-time reliability, characterized in that: the method comprises the following steps: respectively coating a polymer composition containing (A) at least one polymer selected from a group consisted by a polyamic acid and a polyimide and (B) a special compound using a bi(methyl)acrylate with a biphenyl structure as the representation on a conductive film of a pair of substrates with the conductive film, so as to form a coating film; making the coating films of the substrates opposite to each other by the liquid crystal layer to form a liquid crystal box; irradiating the light on the liquid crystal box when the voltage is applied between the conductive films of the substrates.

Description

technical field [0001] The present invention relates to a method for producing a liquid crystal display element, a polymer composition and a liquid crystal display element. In more detail, it relates to a new method for manufacturing a liquid crystal display element having a wide viewing angle and a fast response speed. Background technique [0002] Among liquid crystal display elements, MVA (Multi-Domain Vertical Alignment) panel, which is known so far as a vertical alignment mode, controls the pouring direction of liquid crystal molecules by forming protrusions in the liquid crystal panel, thereby expanding the viewing angle. However, according to this method, it is unavoidable that the protrusions cause insufficient transmittance and contrast, and further have a problem that the response speed of the liquid crystal molecules is slow. [0003] In recent years, in order to solve the problems of such an MVA type panel as above, a PSA (Polymer Stabilized Orientation) mode ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337G02F1/1333C09K19/56C08L79/08
CPCC08F2/44C08K5/101C08L79/08C09K19/542C09K19/56G02F1/1337G02F1/133723G02F1/134363
Inventor 吉泽纯司谏山纯
Owner JSR CORPORATIOON
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