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Colored photosensitive resin composition, color filter and image display device

A technology of photosensitive resin and composition, which is applied in the direction of instruments, optics, and optomechanical equipment, etc. It can solve problems such as difficulty in forming target height difference, poor surface, and insufficient surface, and achieve minimum surface roughness, physical properties and performance. The effect of high productivity

Pending Publication Date: 2019-08-06
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case of forming a black matrix, columnar spacer, or black columnar spacer using a conventional photosensitive resin composition, leveling (flatness, DOP; Degree of Planarization) is insufficient and it is difficult to form a target level difference. Surface defects caused by vacuum drying (VCD; vacuum dry) process

Method used

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  • Colored photosensitive resin composition, color filter and image display device
  • Colored photosensitive resin composition, color filter and image display device
  • Colored photosensitive resin composition, color filter and image display device

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0142] Synthesis example: Synthesis of alkali-soluble resin (B)

[0143] Put 277 g of methoxybutyl acetate into a separate flask with an inner volume of 1 L equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen gas introduction tube, and after raising the temperature to 80° C., dropwise add The 3,4-epoxytricyclo[5.2.1.0 2,6 ]decane-9-ylacrylate and 3,4-epoxytricyclo[5.2.1.0 2,6 ] a mixture of decane-8-yl acrylate [50:50 (molar ratio)] [the compound represented by the above chemical formula 1, R a =H] 301g, 49g of methacrylic acid and 23g of azobisdimethylvaleronitrile dissolved in 350g of methoxybutyl acetate were mixed solution, and matured for 3 hours to obtain a copolymer solution [solid content ( NV) 35.0% by weight]. The acid value (dry) of the obtained copolymer was 69.8 mgKOH / g, the weight average molecular weight (Mw) was 9,500, and the degree of dispersion Mw / Mn was 1.9.

[0144][chemical formula 1]

[0145]

Embodiment and

[0146] Examples and Comparative Examples: Production of Colored Photosensitive Resin Compositions

[0147] The colored photosensitive resin composition was manufactured according to the composition of following Table 1. At this time, the physicochemical properties of the solvent are shown in Table 2 below.

[0148] [Table 1]

[0149]

[0150] [Table 2]

[0151] No. type Viscosity (mPa·s) Vapor pressure (mmHg) |Δ(viscosity-vapor pressure)| 1 Propylene Glycol Methyl Ether Acetate (PGMEA) 1.3 2.8 1.5 2 Ethylene glycol monoethyl ether acetate (EGA) 1.3 1.2 0.1 3 3-Methoxybutyl acetate (3-MBA) 0.7 1.1 0.4 4 Diethylene glycol ethyl methyl ether (MEDG) 1.2 0.7 0.5 5 1,2-Propanediol diacetate (PGDA) 2.9 0.2 2.6 6 Propylene Glycol Monomethyl Ether (PGME) 1.9 8.7 6.8

experiment example

[0153] (1) Preparation of colored substrate

[0154] A 5 cm x 5 cm glass substrate (manufactured by Corning Incorporated) was washed with a neutral detergent and water, and then dried. The colored photosensitive resin compositions produced in Examples and Comparative Examples were spin-coated on the above-mentioned glass substrates so that the final film thickness was 3.0 μm, pre-baked at 100° C., and dried for 90 seconds to remove the solvent. Then, at 35mJ / cm 2 The exposure amount was exposed to form a pattern, and the non-exposed part was removed using an aqueous alkali solution. Next, post-firing was performed at 230° C. for 30 minutes to manufacture a colored substrate.

[0155] (2) Determination of viscosity

[0156] The viscosity of the solvent, the colored photosensitive resin composition of the Example, and the comparative example was measured at 20 degreeC using the Brookfield Viscometer DV-I+ (Brookfield Viscometer DV-I+, Brookfield company make).

[0157] (3) D...

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Abstract

The present invention relates to a colored photosensitive resin composition, a color filter including a black matrix and / or a column spacer manufactured thereby, and an image display device includingthe color filter. According to the present invention, the viscosity of each solvent is equal to or less than 2.0 mPa*s at 20 DEG C and the vapor pressure of each solvent is equal to or less than 3.0 mmHg at 20 DEG C, and an entire solvent satisfies formula 1 (shown in the description), wherein Ai is the viscosity (mPa*s) of each solvent at 20 DEG C, Bi is the vapor pressure (mmHg) of each solventat 20 DEG C, and Mi is a weight ratio of each solvent in the entire solvent. According to the present invention, the colored photosensitive resin composition has excellent levelling properties, thereby being able to form a desired step and effectively suppressing surface defect or surface roughness of a formed black matrix, column spacer, or black matrix-integrated column spacer.

Description

technical field [0001] The present invention relates to a colored photosensitive resin composition, a black matrix manufactured using the colored photosensitive resin composition, a columnar spacer, or a black matrix-integrated columnar spacer, and a color filter and an image display device containing them. Background technique [0002] In the display industry, there has been a shift from cathode ray tube (CRT, Cathode-ray tube) to plasma display panel (PDP, plasma display panel), organic light-emitting diode (OLED, organic light-emitting diode), liquid crystal display (LCD, Liquid -Crystal display) etc. represent a huge change in flat-panel displays. In particular, LCD is a main product in the flat panel display market, and consists of an upper plate provided with color filters, a lower plate provided with thin film transistors (TFTs), and liquid crystal injected between them. [0003] A color filter is a core component for expressing colors in an LCD, and it is used in a ...

Claims

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Application Information

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IPC IPC(8): G03F7/004G03F7/027G02F1/1335G02F1/1339G03F7/00
CPCG03F7/004G03F7/027G03F7/0007G02F1/133512G02F1/13394G02F1/133514G03F7/0048G03F7/028
Inventor 曺升铉权宁竖李贤普
Owner DONGWOO FINE CHEM CO LTD
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