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

A technology of liquid crystal display elements and manufacturing methods, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems that cannot be ruled out, such as display properties, voltage retention properties, high ultraviolet irradiation, and no reactive mesogens, etc., to achieve Excellent display properties, non-destructive display properties, and the effect of reducing manufacturing costs

Active Publication Date: 2015-06-10
JSR CORPORATIOON
View PDF6 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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 acid dianhydride as tetracarboxylic dianhydride, 43g (0.40mol) of p-phenylene diamine 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. The obtained polyamic acid solution was divided in a small amount, 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 the dehydration ring-closure reaction was performed at 110°C for 4 hours. After the dehydration and 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 ...

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 ), and then add a compound represented by the following formula (B-1) as the (B) compound, and 20 parts by weight relative to 100 parts by weight of the above-mentioned (A) polymer, to form 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, the pattern of the transparent electrode (2 types) and the amount of ultraviolet irradiation (3 levels) were changed to produce a total of 6 liquid crystal display elements, which were evaluated as follows.

[0208] [Manufacturing of liquid crystal cell with unpatterned transparent electrode]

[0209] Using a liquid crystal alignment film...

Embodiment 2～5

[0230] Except that in Example 1 above, the type and amount of 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

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 manufacturing 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 with a wide viewing angle and a fast response speed. Background technique [0002] Among the liquid crystal display elements, the MVA (Multi-Domain Vertical Alignment) panel, which has been known as a vertical alignment mode so far, forms protrusions in the liquid crystal panel to control the inverting direction of liquid crystal molecules, thereby expanding the viewing angle. However, according to this method, it is inevitable that the protrusions cause insufficient transmittance and contrast, and further have the problem of slow response speed of liquid crystal molecules. [0003] In recent years, in order to solve the problems of MVA type panels as described above, the PSA (Polymer Stable Orientation) mode has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap