Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter

A technology of diketopyrrolopyrrole and color filter, which is applied in the field of color filter and can solve the problems of foreign matter and the like

Active Publication Date: 2013-10-02
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the micronized diketopyrrolopyrrole pigment has the property of being easy to crystallize and grow through its intermolecular hydro

Method used

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  • Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter
  • Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter
  • Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter

Examples

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Effect test

no. 1 Embodiment approach

[0065] (Diketopyrrolopyrrole pigment composition)

[0066] The first embodiment is a diketopyrrolopyrrole pigment composition for color filters containing a diketopyrrolopyrrole pigment represented by the following formula (1) and a diketopyrrolopyrrole pigment represented by the following formula (A-2). The diketopyrrolopyrrole pigment composition for color filters of the specific hetero diketopyrrolopyrrole pigment, the content of the specific hetero diketopyrrolopyrrole pigment represented by the following formula (A-2) is represented by pyrrolopyrrole The total mass of the diketopyrrole pigments is based on 1% by mass to 15% by mass.

[0067] As a result of intensive studies, the inventors of the present invention found that brominated diketopyrrolopyrrole pigment (formula (1)) With color filters, the brightness will increase. It was further found that a diketopyrrolopyrrole pigment (formula (A-2) (hereinafter, referred to as "specific hetero diketopyrrolopyrrole pigment...

no. 2 Embodiment approach

[0246] (Diketopyrrolopyrrole pigment composition)

[0247] The diketopyrrolopyrrole pigment composition for color filters according to the second embodiment contains a brominated diketopyrrolopyrrole pigment represented by the following formula (1) and a specific pigment represented by the following formula (B-2). Diketopyrrolopyrrole pigment composition for a color filter of a hetero diketopyrrolopyrrole pigment, wherein the mass ratio of the following formula (1) to the following formula (B-2) is 97:3 to 85:15 scope.

[0248] As a result of intensive studies accumulated by the present inventors, it was found that instead of the conventionally used C.I. Pigment Red 254 (chlorinated diketopyrrolopyrrole pigment) filter, the brightness will increase. It was further found that by using the brominated diketopyrrolopyrrole pigment and a diketopyrrolopyrrole pigment (formula (B-2) (hereinafter, referred to as "specific heteropyrrolopyrrole) with asymmetrically introduced substitu...

no. 3 Embodiment approach

[0286] (coloring composition for color filter)

[0287] The coloring composition for color filters of 3rd Embodiment contains the diketopyrrolopyrrole pigment composition of 1st Embodiment. The diketopyrrolopyrrole pigment composition of the first embodiment can be used as a coloring composition by using it together with a binder resin and an organic solvent. Moreover, you may use together the coloring agent other than the diketopyrrolopyrrole pigment composition of 1st Embodiment. For example, the diketopyrrolopyrrole pigment composition of the second embodiment can also be used.

[0288] (other colorants)

[0289] In order to adjust the chromaticity, etc., the coloring composition of the third embodiment may be used in combination with pigments or dyes other than the diketopyrrolopyrrole pigment composition of the first embodiment, either alone or 2 or more.

[0290] When using a colorant other than the diketopyrrolopyrrole pigment composition in combination, the diketop...

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Abstract

The invention provides a diketopyrrolopyrrole-type pigment composition for color filters, which comprises a diketopyrrolopyrrole pigment represented by formula (1) and a diketopyrrolopyrrole pigment represented by formula (A-2), and which is characterized in that the content of the diketopyrrolopyrrole pigment represented by formula (A-2) is 1-15 mass% relative to the total mass of the diketopyrrolopyrrole-type pigments.

Description

technical field [0001] The present invention relates to a diketopyrrolopyrrole pigment composition for color filters, a coloring composition for color filters, and a color filter formed using the coloring composition for color filters. Background technique [0002] The liquid crystal display device is a display device that controls the degree of polarization of the light passing through the first polarizing plate through the liquid crystal layer sandwiched by two polarizing plates, and controls the amount of light passing through the second polarizing plate to display, so as to use twisted nematic ( TN) type liquid crystal is the mainstream. Color display can be achieved by placing a color filter between these two polarizing plates. In recent years, it can be used in TVs and personal computer monitors. Ask for more. [0003] The color filter is arranged on the surface of a transparent substrate such as glass with two or more fine strip-shaped filter blocks of different hue...

Claims

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Application Information

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IPC IPC(8): G02B5/20C09B57/00C09B67/20C09B67/22G02B5/22
CPCG02B5/223C09B57/004C09B67/0002C09B67/0022C09B67/0039C09B67/0041G03F7/0007G03F7/105
Inventor 饭田裕介藤木雅之安藤宗德山本裕一和久寿男阿部悠太荒川久满笹木香苗
Owner TOYO INK SC HOLD CO LTD
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