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Color filter and image display device comprising same

A color filter, cyan technology, applied in the field of color filters and image display devices equipped with the same, can solve the problems of reduced brightness, unimproved, insufficient spectral characteristics of color filters, etc., and achieves the effect of excellent color reproducibility

Inactive Publication Date: 2012-05-30
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are aimed at improving heat resistance and light resistance, or improving contrast by reducing pigment particles, but they are not sufficient for improving the spectral characteristics of color filters.
[0013] In particular, the reduction in luminance when improving color reproducibility, which is a conventional problem, has not been substantially improved by the above-mentioned methods, and the development of a color filter that provides a sufficient color reproduction range and reduces luminance reduction when applied to a display device is desired.

Method used

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  • Color filter and image display device comprising same
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  • Color filter and image display device comprising same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0330] Preparation of photocurable composition

[0331] The photocurable composition used in the present invention can be prepared by selecting and mixing the above-mentioned components as needed.

[0332] In addition, after preparing the pigment dispersion composition as described above, it is preferable to use the pigment dispersion composition to obtain the photocurable composition used in the present invention.

[0333] When the pigment dispersion composition is used in the preparation of the photocurable composition used in the present invention, its content is preferably such that the content of the pigment is 30% by mass or more and 60% by mass relative to the total solid content (mass) of the photocurable composition. % or less, more preferably 35% by mass to 60% by mass, more preferably 40% by mass to 60% by mass.

[0334] When the content of the pigment dispersion composition is within this range, the color concentration is sufficient and effective for securing exce...

Embodiment 1

[0430] Hereinafter, although an Example demonstrates this invention more concretely, unless the summary is exceeded, this invention is not limited to a following Example. In addition, unless otherwise specified, "part" is a mass standard.

experiment example

[0432] Preparation of Pigment Dispersion Composition YG-1

[0433] Components of the following composition were mixed, stirred and mixed using a homogenizer at a rotation speed of 3000 r.p.m. for 3 hours, and a mixed solution containing a pigment was prepared.

[0434] composition

[0435] · Pigment Yellow 185 125 parts

[0436] · Phthalocyanine derivatives 5 parts

[0437] (SOLSPERSE 3000, manufactured by The Lubrizol Corporation)

[0438] 15 parts of propylene glycol monomethyl ether acetate solution (solid content 50%) of benzyl methacrylate / methacrylic acid (=70 / 30 [molar ratio]) copolymer (Mw: 5000)

[0439] ・Dispersant (Disperbyk-161, manufactured by BYK Japan KK.) 60 parts

[0440] ·Propylene glycol monomethyl ether acetate 795 parts

[0441]Next, the mixed solution obtained above was further subjected to a dispersion treatment for 12 hours using a bead disperser DISPERMAT (manufactured by GETZMANN) using 0.3 mmφ zirconia beads. Then, further use the high-pressure...

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Abstract

Disclosed is a color filter which has heat resistance and a green colored region with high luminance and exhibits excellent color reproducibility when used in an image display device. Also disclosed is an image display device which comprises the color filter and exhibits excellent color reproducibility. The color filter has a green colored region, which contains a green pigment or a cyan pigment and at least one yellow dye selected from the group consisting of the dyes (1)-(3) described below, on a substrate. (1) a methine dye having a pyrazolotriazole ring in the structure (2) an azo dye having a pyridone ring in the structure (3) an azo dye having a pyrazole ring in the structure.

Description

technical field [0001] The present invention relates to a color filter and an image display device including the same. Background technique [0002] In recent years, the use of color filters tends to expand not only to liquid crystal display elements (LCD) but also to display elements such as organic EL (Electro Luminescence) elements. [0003] A color filter is a very important component that determines the color rendering of a liquid crystal display (LCD), and the requirements for chromaticity, contrast, brightness, etc. are increasing year by year, and further improvement is expected. [0004] In addition, as mentioned above, there exists a tendency for the application of a color filter to display elements, such as an organic EL element, to expand. With the trend of expanding applications, color filters are required to have high color characteristics such as reduction of color unevenness and improvement of color resolution in addition to chromaticity and contrast, and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20C09B23/00C09B29/42G02F1/1335G03F7/004
CPCG03F7/0007C09B47/26C09B29/3639C09B29/334G03F7/027C09B29/3669G02B5/223C09B29/3634G02F1/133514G03F7/105G02B5/20C09B23/00C09B29/3617G02F1/1335
Inventor 松本圭右片山晃男
Owner FUJIFILM CORP
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