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Black resin composition for light-shielding film, substrate with light-shielding film having light-shielding film, color filter, and touch panel

A technology of black resin and light-shielding film, which can be used in optical filters, photosensitive materials for optomechanical equipment, optics, etc., and can solve the problems of reduced storage stability of resin compositions

Active Publication Date: 2020-10-27
NIPPON STEEL CHEM &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When only heat curing is performed, there is less concern about wrinkling in thick films than when light curing is used together. Chemical resistance at the time), it is necessary to coexist the hardener and / or hardening accelerator for thermosetting reaction, and the coexistence of surface-active silicon oxide particles may reduce the storage stability of the thermosetting resin composition.

Method used

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  • Black resin composition for light-shielding film, substrate with light-shielding film having light-shielding film, color filter, and touch panel
  • Black resin composition for light-shielding film, substrate with light-shielding film having light-shielding film, color filter, and touch panel
  • Black resin composition for light-shielding film, substrate with light-shielding film having light-shielding film, color filter, and touch panel

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0106] In a 500ml four-necked flask with a reflux cooler, 78.63g (0.17mol) of BPFE, 24.50g (0.34mol) of acrylic acid, 0.45g of TPP, and 114g of PGMEA were added, and the mixture was stirred for 12 hours under heating at 100 to 105°C. The reaction product is obtained.

[0107] Next, 25.01 g (0.085 mol) of BPDA and 12.93 g (0.085 mol) of THPA were added to the obtained reaction product, and the mixture was stirred under heating at 120 to 125°C for 6 hours to obtain a polymerizable unsaturated group-containing alkaline soluble resin Solution (A)-1. The solid content concentration of the obtained resin solution was 55.8 wt%, the acid value (calculated as solid content) was 103 mgKOH / g, and the Mw measured by GPC analysis was 2600.

[0108] [Preparation of resin solution: A component solution]

[0109] The resin solutions A1 to A3 containing the following (A) components were prepared. The refractive index of the cured product after the resin solutions A1 to A3 are dried / cured respectiv...

Embodiment 1

[0128] Mix 14.5 parts by mass of resin solution A2, 15 parts by mass of carbon black dispersion B1, and 0.5 parts by mass of silica dispersion C1, (30 parts by mass in total), pressurize and filter through a 1μm depth filter to prepare Black resin composition for light-shielding film. The initial viscosity (room temperature) of the prepared composition was 10.3 mPa·sec. The black resin composition for a light-shielding film was applied to alkali-free glass by spin coating to change the number of rotations, and the glass was dried at 90°C for 5 minutes, and then post-baked at 230°C for 30 minutes to make a glass substrate with light-shielding film .

Embodiment 2 to 3、 comparative example 1 to 3

[0130] The aforementioned resin solution A2 and carbon black dispersion liquid B1 and the dispersion liquid containing transparent particles were mixed in parts by mass shown in Tables 2 to 3 to prepare a black resin composition for a light-shielding film, and the viscosity was measured in the same manner as in Example 1. Then, the black resin composition for a light-shielding film was coated on an alkali-free glass, dried at 90°C for 5 minutes, and then post-baked at 230°C for 30 minutes to form a glass substrate with a light-shielding film. The results are shown in Tables 2 to 3.

[0131] Compared with the glass substrate with a light-shielding film of Comparative Example 1 which does not contain transparent particles, the glass substrates with a light-shielding film of Examples 1 to 3 have the same carbon black concentration, which can reduce the reflectance. On the other hand, the glass substrate with a light-shielding film of Comparative Example 2 containing alumina particle...

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Abstract

The present invention relates to a black resin composition for a light-shielding film, a light-shielding film-attached substrate having a light-shielding film, a color filter, and a touch panel. The black resin composition for light-shielding films of the present invention contains the following as essential components: (A) a curable resin that hardens with light or heat, and / or a curable monomer that hardens with light or heat; (A) B) a dispersion liquid containing black light-shielding particles in which black light-shielding particles are dispersed in a dispersion medium; and (C) a dispersion liquid containing transparent particles in which transparent particles are dispersed in a dispersion medium. By using such a black resin composition for a light-shielding film, a light-shielding film having a high light-shielding rate and excellent appearance can be provided as a color filter or a light-shielding film for a touch panel.

Description

Technical field [0001] The present invention relates to a black resin composition for a light-shielding film, a substrate with a light-shielding film having a light-shielding film formed by curing the composition on a transparent substrate such as glass, and a color for displays such as LCDs having the light-shielding film substrate as a constituent element Filters and touch panels for display devices. Specifically, the present invention relates to a black resin composition suitable for forming a fine light-shielding film on a transparent substrate and hardening by light or heat, and a light-shielding film formed by curing the black resin composition at a selective position The substrate with light-shielding film. Background technique [0002] A light-shielding film (frame) is provided on the outer frame of the touch panel to shield the light leakage from the peripheral portion of the liquid crystal panel on the back side, and a black matrix for light-shielding the TFT element i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/004G03F7/027G02B5/20G02F1/1335
CPCG02F1/133512G03F7/004G03F7/027G02B5/20G03F7/0752G03F7/105C08K9/04C08K3/04C08K3/36G03F7/028G03F7/0007G06F3/041G02B5/208
Inventor 斋藤亨藤城光一
Owner NIPPON STEEL CHEM &MATERIAL CO LTD
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