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Colored composition for color filters, color filter and liquid crystal display device

A technology for coloring compositions and color filters, which can be applied in the directions of instruments, filters, optics, etc., can solve the problems of insufficient color reproduction area in expanding liquid crystal display devices, etc.

Inactive Publication Date: 2007-07-25
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, none of the above-mentioned methods is sufficient for expanding the color reproduction region of a liquid crystal display device, and a liquid crystal display device with better color reproducibility is required.

Method used

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  • Colored composition for color filters, color filter and liquid crystal display device
  • Colored composition for color filters, color filter and liquid crystal display device
  • Colored composition for color filters, color filter and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] A mixture of the following compositions was uniformly stirred and mixed, and then filtered through a 1 μm filter to obtain an alkali-developing type cyan coloring composition 1 .

[0192] Pigment dispersion 1 shown in Table 2 12.0 parts

[0193] Pigment dispersion 9 shown in Table 2 48.0 parts

[0194] Photopolymerization initiator 2.0 parts

[0195] ("IRGACURE" 907 manufactured by Ciba Specialty Chemicals)

[0196] Trimethylolpropane triacrylate 5.0 parts

[0197] ("NK ESTER ATMPT" produced by Shin-Nakamura Chemical Co., Ltd.)

[0198] 0.5 parts of sensitizer

[0199] ("EAB-F" produced by Hodo Keya Chemical Co., Ltd.)

[0200] Acrylic resin solution 1 2.5 parts

[0201] Cyclohexanone 30.0 parts

Embodiment 2-20、 comparative example 1-3

[0203] Except using the pigment dispersion shown in Table 3, following the same method as Example 1, cyan or yellow coloring composition 2-20 was obtained.

[0204]

[0205] Coloring compositions 16-19 were obtained in the same manner as in Example 1 except that the pigment dispersions shown in Table 3 were used.

[0206] table 3

[0207]

coloring composition

Pigment Dispersion

Pigment Dispersion

Hue of the coloring composition

contrast ratio

Lightfastness

type

Quantity (parts)

type

Quantity (parts)

x

y

Y

Example 1

1

1

12

9

48

0.131

0.222

12.8

1500

2.7

Example 2

2

2

12

9

48

0.131

0.222

12.9

2000

2.9

Example 3

3

4

12

9

48

0.131

0.222

12....

Embodiment 11-24、 and comparative example 4-6

[0221]

[0222] A black matrix is ​​processed to form a pattern on a glass substrate, and a coloring composition 17 is applied on the substrate with a spin coater to form a coating film of the coloring composition. Irradiate 300mJ / cm with an ultra-high pressure mercury lamp through a photomask on the film 2 of ultraviolet light. Next, the unexposed part was removed by spray development with an alkaline developer composed of 2% by weight of sodium carbonate aqueous solution, and then washed with ion-exchanged water, and the substrate was heated at 230°C for 20 minutes to form a film thickness of 2.5 μm. red filter section. In the same manner, green filter segments and blue filter segments having a film thickness of 2.5 μm were formed using coloring compositions 18 and 19 . In the same manner, coloring compositions 1-27 shown in Table 5 were used to form cyan, yellow, and magenta filter segments with a film thickness of 2.5 μm to produce color filters.

[0223]

[0224] U...

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Abstract

The present invention relates to colored composition for color filters, color filter and liquid crystal display device. A cyan-colored composition for a color filter contains a phthalocyanine blue pigment comprising either of C.I. Pigment Blue 15:3 and C.I. Pigment Blue 15:4, or both, a phthalocyanine green pigment comprising C.I. Pigment Green 7, and a pigment carrier consisting of a transparent resin, a precursor of the resin or a mixture thereof. The color filter includes a red-colored filter segment, a green-colored filter segment, a blue-colored filter segment, and a cyan-colored filter segment or a yellow-colored filter segment.

Description

[0001] This application is based on the earlier Japanese applications with application number No. 2006-5626 dated January 13, 2006, and application number No. 2006-203718 dated July 26, 2006. and claims their priority, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a coloring composition for a color filter for producing a color filter used in a color liquid crystal display device, a color pickup element, and the like, a color filter, and a liquid crystal display device. Background technique [0003] In recent years, liquid crystal display devices have been used in TV monitoring applications, personal computer monitoring applications, mobile office applications, etc. For the color filters used therein, the brightness, color purity, and further formation of each color filter section ( The level of requirements for various characteristics such as coating uniformity, sensitivity, developability, and pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02F1/1335
Inventor 佐佐木宽山田和则饭田裕介旭德子
Owner TOYO INK SC HOLD CO LTD
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