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 (flatnes

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

Example Embodiment

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

[0143] Put 277 g of methoxybutyl acetate into a 1L separable flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen introduction tube. After the temperature is raised to 80°C, it is added dropwise over 5 hours The 3,4-epoxy tricyclic [5.2.1.0 2,6 ]Decane-9-yl acrylate and 3,4-epoxy tricyclic [5.2.1.0 2,6 ] Decane-8-yl acrylate mixture [50:50 (molar ratio)] [The compound represented by the above chemical formula 1, R a =H] A mixed solution of 301 g, 49 g of methacrylic acid, and 23 g of azobisdimethylvaleronitrile dissolved in 350 g of methoxybutyl acetate, 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]

Example

[0146] Examples and Comparative Examples: Manufacture of colored photosensitive resin composition

[0147] The colored photosensitive resin composition was produced according to the composition of Table 1 below. At this time, the physical and chemical properties of the solvent are shown in Table 2 below.

[0148] [Table 1]

[0149]

[0150] [Table 2]

[0151] No. species Viscosity (mPa·s) Vapor pressure (mmHg) |Δ(Viscosity-Vapor Pressure)| 1 Propylene glycol methyl ether acetate (PGMEA)1.32.81.5 2 Ethylene glycol monoethyl ether acetate (EGA)1.31.20.1 3 3-Methoxybutyl Acetate (3-MBA)0.71.10.4 4 Diethylene glycol ethyl methyl ether (MEDG)1.20.70.5 5 1,2-Propanediol diacetate (PGDA)2.90.22.6 6 Propylene glycol monomethyl ether (PGME)1.98.76.8

Example Embodiment

[0152] Experimental example

[0153] (1) Production of colored substrate

[0154] After washing a 5 cm×5 cm glass substrate (manufactured by Corning Incorporated) with a neutral lotion and water, it was dried. The colored photosensitive resin compositions produced in the examples and comparative examples were spin-coated on the glass substrates so that the final film thickness became 3.0 μm, and pre-baked at 100° C., dried for 90 seconds, and removed the solvent. Then, with 35mJ / cm 2 Exposure is exposed to form a pattern, and the non-exposed part is removed using an aqueous alkali solution. Next, post-baking was performed at 230°C for 30 minutes to produce a colored substrate.

[0155] (2) Measurement of viscosity

[0156] Using Brookfield Viscometer DV-I+, manufactured by Brookfield Viscometer at 20°C, the viscosity of the solvent and the colored photosensitive resin composition of Examples and Comparative Examples was measured.

[0157] (3) Measurement of optical characteristics ...

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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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