Unlock instant, AI-driven research and patent intelligence for your innovation.

Processes for producing color filter and for producing liquid-crystal display

A manufacturing method and filter technology, applied in instruments, optical filters, optics, etc., can solve the problems of low pigment concentration in colored inks, unable to use color filters, and difficult to suppress color mixing, etc., to achieve high penetration concentration and high reliability , The effect of brightness improvement

Inactive Publication Date: 2012-07-04
SEIREN CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the production method disclosed here is adopted, since the pigment concentration of the colored ink is low, in order to obtain the color purity and color reproducibility of the color filter, it is necessary to adopt a complicated process of repeating the ink filling process, and the yield decreases.
[0014] As a color filter constituting a liquid crystal element, high color purity and color reproducibility are required, that is, a high concentration of colorant in the colored part is required. In the method of increasing the amount of ink, when the amount of ink added increases, it is difficult to suppress color mixing due to ink bleeding, so it is impossible to manufacture color filters with good yield
[0015] As mentioned above, the method of forming a colored layer by an inkjet method and manufacturing a color filter has excellent straightness and stability when ejected from the head of an inkjet nozzle, and high There is no method for color purity and color reproducibility

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
  • Processes for producing color filter and for producing liquid-crystal display

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0163]

[0164] (1) Preparation of red pigment dispersion liquid for color filter

[0165] The red pigment, pigment dispersant and organic solvent are mixed in the following proportions, 500 parts of zirconium beads with a diameter of 0.3 mm are added, and dispersed for 4 hours using a paint shaker to obtain a pigment dispersion (R).

[0166] (The composition of the pigment dispersion)

[0167] Red pigment (C.I. Pigment Red 254): 10 parts

[0168] Pigment dispersant (manufactured by AVECIA Co., Ltd.: ソルスパ一斯24000): 10 parts

[0169] DPMA (Dipropylene glycol methyl ether acetate; boiling point=209°C, surface tension=27mN / m): 80 parts

[0170] (2) Preparation of green pigment dispersion for color filter

[0171] Except that 10 parts of green pigment (CI Pigment Green 36) and 10 parts of yellow pigment (CI Pigment Yellow 150) were used instead of 10 parts of red pigment (CI Pigment Red 254) in (1) above, a pigment dispersion was prepared in the same manner as in Production Example 1. (G1) an...

manufacture example 2

[0174]

[0175] As the solvent in Production Example 1, in addition to using BCA (diethylene glycol butyl ether acetate; boiling point = 247°C, surface tension = 30 mN / m) instead of DPMA, the same as in Production Example 1 (1) to (3) The same method was used to prepare red, green and blue pigment dispersions.

manufacture example 3

[0176]

[0177] 15 parts of polyester acrylic oligomer, 15 parts of dipentaerythritol hexaacrylate (hereinafter referred to as DPHA), 20 parts of 1,6-hexanediol diacrylate, 45.5 parts of dipropylene glycol methyl ether acetate, and チチスペシヤルテイ一 After mixing 0.5 part of the photopolymerization initiator "Irgami 369" manufactured by Kemikalug Co., Ltd., it was filtered with a filter with a pore size of 1.0 μm to obtain a transparent resin solution.

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
boiling pointaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

To provide a process for producing a color filter with an ink-jet ink excellent in rectilinear flight and stability after discharge from a head, the process being able to impart a high color purity and color reproducibility; and a liquid-crystal display employing a color filter produced by the process. A color filter is produced by: applying a pigment dispersion selectively to partitioned areas in a surface of a transparent insulation base by an ink-jet printing technique (pigment dispersion application step); subsequently applying a transparent resin solution selectively to the partitioned areas by an ink-jet printing technique to mix the pigment dispersion with the transparent resin solution within each partitioned area and form a liquid mixture layer (transparent-resin-solution application step); and then curing the liquid mixture layer formed in the preceding step (curing step).

Description

Technical field [0001] The present invention relates to an inkjet ink for a color filter, a method for manufacturing the inkjet ink, a method for manufacturing a color filter using the inkjet ink for use in a solidified layer forming a predetermined pattern in a pixel portion (colored layer), And a method of manufacturing a liquid crystal display device using the color filter. Background technique [0002] In recent years, with the development of personal computers, especially hand-held personal computers, the demand for liquid crystal displays, especially color liquid crystal displays, has tended to increase. However, since this kind of color liquid crystal display is expensive, there is a strong demand for cost reduction, especially for color filters with higher costs. [0003] In this type of color filter, for example, the surface of a transparent substrate formed of glass or plastic is generally formed with three primary colors of red (R), green (G), and blue (B). A structure...

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): G02B5/20G02F1/1335
CPCG02F1/133516G02B5/223G02B5/201
Inventor 山田耕平盐见秀数岛田芳永山田英幸
Owner SEIREN CO LTD