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Colored composition and color filter using the same

A technology for coloring compositions and mixtures, which is applied in the fields of instruments, optics, nonlinear optics, etc., and can solve problems such as film thickness, uneven coating, and uneven strips

Active Publication Date: 2009-01-28
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, this method has a disadvantage that the coating film thickness at the center portion of the rotation and the peripheral portion of the transparent substrate becomes too thick compared to its central portion due to the principle of spreading the coating film thinly by utilizing the centrifugal force generated by rotation.
However, the die coating method has the following disadvantages: in this mechanism, stripe-shaped unevenness (strip unevenness (sjimura)) is likely to occur in the direction perpendicular to the direction of travel of the slit, and the outer peripheral portion of the coating film is convex. , the film thickness becomes thicker than the central part of the substrate
However, since the low-viscosity solvents that can be used in coloring compositions for color filters have low dielectric constants and low electrical conductivity, they are often high-chargeable coloring compositions, and uneven coating due to charging is likely to occur.

Method used

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  • Colored composition and color filter using the same
  • Colored composition and color filter using the same
  • Colored composition and color filter using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] Stir and mix the mixture of the following composition evenly, then use glass beads with a diameter of 1 mm to disperse for 5 hours with a sand mill, and then filter with a 5 μm filter to prepare a copper phthalocyanine pigment dispersion.

[0136] ε-type copper phthalocyanine pigment (C.I. Pigment Blue 15:6) ("Heliogen Blue-L-6700F" manufactured by BASF Corporation) 12.0 parts

[0137] 2.4 parts of coloring material dispersing agent ("Solus Pass 20000" manufactured by Zeneca Co., Ltd.)

[0138] Acrylic resin solution 28.1 parts

[0139] Cyclohexanone 57.5 parts

[0140] Next, the mixture of the following composition was stirred and mixed uniformly, and it filtered using the filter of 1 micrometer, and the coloring composition used as a blue resist material was obtained. The composition of the coloring composition is shown in Table 1A (weight ratio based on the total amount of the coloring composition as 100; brackets indicate the weight relative to 100 parts by weight...

Embodiment 2～13 and comparative example 1～8

[0150] In the same manner as in Example 1, coloring compositions having the compositions shown in Table 1A to Table 1E were prepared as resist materials of various colors.

[0151]

[0152]

[0153]

[0154]

[0155]

[0156] In Table 1A ~ Table 1E:

[0157] Organic solvent 1: cyclohexanone

[0158] Organic solvent 2: Ethylene glycol monoethyl ether acetate

[0159] Organic solvent 3: isoamyl acetate

[0160] Organic solvent 4: ethyl 3-ethoxypropionate

[0161] Organic solvent 5: Propylene glycol monomethyl ether acetate

[0162] Pigments for red:

[0163] 5.08 parts of diketopyrrolopyrrole pigment (C.I. Pigment Red 254) (“Ilgafored B-CF” manufactured by Ciba Specialty Chemicals)

[0164] Anthraquinone-based pigment (C.I. Pigment Red 177) (Ciba Specialty Chemicals "Cromofta Lured A2B") 0.82 parts

[0165] Anthraquinone pigment (C.I. Pigment Yellow 199) (Ciba Specialty Chemicals' "Cromofuta-Luero-GT-AD") 0.20 parts

[0166] ...

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Abstract

The present invention provides a colored composition which is a liquid colored composition having colored material carrier composed of transparent resin and its former or their compound, colored material, organ solvent, surface regulator. For the liquid colored composition, dipping a glass plate with the surface is a 22 mm x 22 mm square and thickness is 0.145mm into the liquid colored composition according to Wilhelmy plate method, making one edge of the glass plate dip 2.5 mm in vertical direction perpendicular to the liquid surface of the liquid composition, here, the force A measured under the static status of glass plate and under 25 DEG C is larger than 1.16 mN, and the force A' obtained by minus the buoyancy of the glass plate in the colorized composition from the force A satisfies the following relation with force B measured at the instant that the glass plate separating from the liquid colorized composition when lifting the dipped glass plate in vertical direction with a speed of 2.5 mm / s under 25 DEG C: 0.08 <= B-A' <= 0.18. The present invention provides a color filter which is equipped with filter segment and / or black substrate formed by the colorized composition.

Description

technical field [0001] This invention relates to the coloring composition used for manufacture of the color filter used for a color liquid crystal display device, a color pickup element, etc., and the color filter using this coloring composition. Background technique [0002] Color filters constituting liquid crystal displays (LCDs), color image pickup devices (CCDs), etc. are manufactured by applying a coating liquid (coloring composition) on a transparent substrate and drying it to form a coating film with a thickness of approximately 1 to 3 μm of. As a method for applying a coating liquid to a substrate, there are spin coating methods, die coating methods, and the like, which can be appropriately used according to their characteristics. [0003] The spin coating method is a method widely used to form a thin film on a small-sized substrate. The coating method is as follows: the transparent substrate is rotated at a certain speed, and at the same time, the transparent subs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/23G02F1/1335C09D201/00
Inventor 和久寿男山田和则藤田健一旭德子尼崎匡
Owner TOYO INK SC HOLD CO LTD