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Pigment dispersion, negative resist composition for color filter, color filter, liquid crystal display device, and organic light-emitting display device

A color filter and pigment dispersant technology, which is applied in the field of pigment dispersion liquid, can solve the problems that pigment green 58 is not sufficiently miniaturized and the contrast cannot be fully improved, and achieve high contrast, high productivity, high brightness and contrast Effect

Active Publication Date: 2013-01-02
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as shown in the comparative example described later, when the known pigment dispersant disclosed in Patent Document 3 is used, C.I. Pigment Green 58 is not sufficiently miniaturized, and the contrast cannot be sufficiently improved.

Method used

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  • Pigment dispersion, negative resist composition for color filter, color filter, liquid crystal display device, and organic light-emitting display device
  • Pigment dispersion, negative resist composition for color filter, color filter, liquid crystal display device, and organic light-emitting display device
  • Pigment dispersion, negative resist composition for color filter, color filter, liquid crystal display device, and organic light-emitting display device

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0246] (Production Example 1 Synthesis of Pigment Derivative A (Monosulfonic Acid Derivative of PY138))

[0247] 374.76 parts by weight of 11% by weight of oleum was stirred while cooling at 10° C., and 13874.96 parts by weight of C.I. Pigment Yellow were added thereto. Then, it stirred at 90 degreeC for 6 hours.

[0248] The reaction liquid was added to 1600 parts by weight of ice water, and after stirring for 15 minutes, the precipitate was filtered. The resulting wet cake was washed 3 times with 800 ml of water. The wet cake was vacuum-dried at 80° C. to obtain 81.55 parts by weight of a yellow product.

[0249] The result of gravimetric analysis by TOF-MS of this yellow product agreed with the molecular weight (Mw=774) of the PY138 monosulfonic acid derivative having the following structure.

[0250]

manufacture example 2

[0251] (Production Example 2 Synthesis of Binder Resin A)

[0252] In the polymerization tank, 130 parts by weight of diethylene glycol ethyl methyl ether (EMDG) was loaded as a solvent, and after the temperature was raised to 110° C. under a nitrogen atmosphere, 32 parts by weight of methyl methacrylate (MMA), 22 parts by weight of cyclohexyl acrylate (CHMA), 24 parts by weight of methacrylic acid (MAA), 2 parts by weight of azoisobutyronitrile (AIBN) as an initiator and n-dodecyl sulfide as a chain transfer agent A mixture of 4.5 parts by weight of alcohol was continuously dropped over 1.5 hours respectively.

[0253] Thereafter, the reaction was continued while maintaining the synthesis temperature, and 0.05 parts by weight of p-methoxyphenol was added as a polymerization inhibitor 2 hours after the completion of the dropping.

[0254] Next, while blowing in air, 22 parts by weight of glycidyl methacrylate (GMA) was added, and after the temperature was raised to 110°C, 0.2...

manufacture example 3

[0256] (Production Example 3 Preparation of Dispersant / Binder Resin Solution A)

[0257] In 225 milliliters of mayonnaise bottles (マ㨨ネズ bottle), 68.51 parts by weight of propylene glycol monomethyl ether acetate (PGMEA), a block copolymer containing tertiary amino groups (with the repeating unit represented by the above general formula (I) ( 1) Block copolymer with the repeating unit (2) represented by the above general formula (II)) (trade name: BYK-LPN 6919, manufactured by BYK Chem) (amine value 135 mgKOH / g, solid content 60% by weight) 4.85 parts by weight and 13.30 parts by weight of the binder resin A of Production Example 2 were dissolved, respectively. Add 0.34 parts by weight of phenylsulfonic acid (trade name: PPA, manufactured by Nissan Chemical Co., Ltd.) to the mixed solution (0.3 molar equivalent relative to the tertiary amino group of the block copolymer), and stir at room temperature for 30 minutes to prepare a dispersant. Binder Resin Solution A.

[0258] At...

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Abstract

Disclosed are: a pigment dispersion that is for a color filter and that has a large process margin in a production disperser while meeting the demand for high brightness and increased contrast; and a negative resist composition that is for a color filter and that has excellent alkaline developing characteristics, can form a color filter having high contrast and high brightness, and has excellent pigment dispersion characteristics. The pigment dispersion for a color filter contains: a pigment dispersing agent that is a particular block co-polymer of which at least a subset of the amino groups that a repeating unit has forms a salt with an organic phosphate compound; a pigment; a sulfonic acid derivative of C.I. pigment yellow 138, and a solvent. The negative resist composition contains: the aforementioned pigment dispersing agent; a pigment; a sulfonic acid derivative of C.I. pigment yellow 138; an alkali-soluble resin; a polyfunctional monomer; a photoinitiator; and a solvent.

Description

【Technical field】 [0001] The present invention relates to a pigment dispersion, a negative resist composition for a color filter using the pigment dispersion, a color filter formed using the negative resist composition, and a color filter having the same Liquid crystal display devices and organic light-emitting display devices. 【Background technique】 [0002] In recent years, with the development of personal computers, particularly portable personal computers, the demand for liquid crystal displays has increased. In addition, recently, the penetration rate of liquid crystal televisions for home use has also increased, and the market for liquid crystal displays is expanding. Also in the performance of liquid crystal displays, further improvement in image quality and reduction in power consumption such as improvement in contrast and color reproducibility are strongly desired. [0003] In such a situation, in the color filter having the function of displaying a liquid crystal...

Claims

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Application Information

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IPC IPC(8): G02B5/20C09B17/00C09B67/20C09B67/22C09B67/46G02B5/22G02F1/1335G03F7/004G09F9/30H01L27/32H01L51/50
CPCC09B68/4253H01L27/322G03F7/0007G03F7/033C09B67/0013C09B67/0041C09B67/0033G02B5/22C09B57/002C09B68/44C09B67/009G02F1/133514H10K59/38
Inventor 小仓教弘小泽武浩濑川裕章
Owner DAI NIPPON PRINTING CO LTD
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