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Photosensitive resin composition and its manufacturing method, light-shielding film and its manufacturing method, and liquid crystal display device and its manufacturing method

A technology of liquid crystal display device and photosensitive resin, applied in the fields of photosensitive resin composition and light-shielding film, can solve the problems of influence of TFT electrical characteristics, deterioration of display quality, etc., and achieve the effect of excellent elastic recovery rate

Active Publication Date: 2021-06-15
NIPPON STEEL CHEM &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the column spacers formed by photolithography are transparent, and there is a problem in such column spacers that light incident from an oblique direction affects the electrical characteristics of the TFT and degrades the display quality.

Method used

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  • Photosensitive resin composition and its manufacturing method, light-shielding film and its manufacturing method, and liquid crystal display device and its manufacturing method
  • Photosensitive resin composition and its manufacturing method, light-shielding film and its manufacturing method, and liquid crystal display device and its manufacturing method
  • Photosensitive resin composition and its manufacturing method, light-shielding film and its manufacturing method, and liquid crystal display device and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0107] Hereinafter, embodiments of the present invention will be specifically described based on Examples and Comparative Examples, but the present invention is not limited thereto.

[0108] First, the synthesis example of (A) polymerizable unsaturated group containing alkali-soluble resin of this invention is shown. The evaluation of the resin in the synthesis example was performed as follows.

[0109] [Solid content concentration]

[0110] 1 g of the resin solution obtained in the synthesis example was impregnated in a glass filter [weight: W 0 (g)], weighing [W 1 (g)], according to the weight after heating at 160°C for 2 hours [W 2 (g)], obtained by the following formula.

[0111] Solid content concentration (weight%)=100×(W 2 -W 0 ) / (W 1 -W 0 )

[0112] [acid value]

[0113] The resin solution was dissolved in dioxane, and it was determined by titrating with a 1 / 10 N-KOH aqueous solution using a potentiometric titration device [manufactured by Hiranuma Sangyo Co....

Synthetic example 1

[0119] In a 500mL four-necked flask with a reflux cooler, add 105.7g (0.29mol) of bisphenol A type epoxy compound (manufactured by Nichika Epoxy Manufacturing Co., trade name YD-128, epoxy equivalent=182 ), 41.8g (0.58mol) of acrylic acid, 1.52g of triphenylphosphine (triphenylphosphine, TPP), and 40.0g of propylene glycol monomethyl ether acetate (PGMEA), stirred at 100°C to 105°C for 12hr , to obtain the reaction product.

[0120] Then, 16.9 g (0.13 mol) of dimethylolpropionic acid and 96 g of PGMEA were added to the obtained reaction product, and it heated up to 45 degreeC. Then, 61.8 g (0.28 mol) of isophorone diisocyanate was dripped, paying attention to the temperature in the flask. After completion of the dropwise addition, the mixture was stirred under heating at 75° C. to 80° C. for 6 hr. Furthermore, 6.2 g (0.04 mol) of tetrahydrophthalic anhydride was added, and it stirred under heating at 90-95 degreeC for 6 hr, and obtained the alkali-soluble resin solution (A)-...

Synthetic example 2

[0122] In a 500mL four-necked flask with a reflux cooler, add 104.2g (0.29mol) of bisphenol A type epoxy compound (manufactured by Nippon Steel Sumitomo Metal Chemical Co., Ltd., trade name YD-128, epoxy equivalent = 182), 41.2g (0.57mol) of acrylic acid, 1.50g of TPP, and 40.0g of PGMEA were stirred under heating at 100°C to 105°C for 12hr to obtain a reaction product.

[0123] Then, 23.1 g (0.17 mol) of dimethylolpropionic acid and 98 g of PGMEA were added to the obtained reaction product, and it heated up to 45 degreeC. Then, 68.0 g (0.31 mol) of isophorone diisocyanate was dripped, paying attention to the temperature in the flask. After completion of the dropwise addition, it was stirred under heating at 75° C. to 80° C. for 6 hrs to obtain a polymerizable unsaturated group-containing alkali-soluble resin solution (A)-2. The solid content concentration of the obtained resin solution was 63.3 wt%, the acid value (solid content conversion) was 41 mgKOH / g, and the Mw obtaine...

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Abstract

The present invention provides a photosensitive resin composition and its manufacturing method, a light-shielding film and its manufacturing method, and a liquid crystal display device and its manufacturing method, which not only maintain the light-shielding and insulating properties, but also maintain elastic modulus, deformation, elastic recovery rate and other spacers. It has excellent properties and can obtain a fine and favorable spacer shape. The photosensitive resin composition of the present invention contains the following components as essential components: (A) a polymerizable unsaturated group-containing alkali-soluble resin, which is a polyol compound having an ethylenically unsaturated bond in the molecule (a), A urethane compound obtained by reacting a diol compound (b) having a carboxyl group and a diisocyanate compound (c); (B) a photopolymerizable monomer having at least one ethylenically unsaturated bond; (C) a photopolymerizable monomer having at least one ethylenically unsaturated bond; a polymerization initiator; (D) one or more light-shielding components selected from the group consisting of a black organic pigment, a mixed-color organic pigment, and a light-shielding material; and (E) a solvent.

Description

technical field [0001] The present invention relates to a photosensitive resin composition for a light-shielding film having the function of a spacer, and a light-shielding film having the function of a spacer obtained by curing the photosensitive resin composition. A photosensitive resin composition and a cured film thereof for a black column spacer having both the spacer function and the black matrix function in a liquid crystal display device. The present invention further relates to a liquid crystal display device using the black column spacer obtained by the curing. This invention further relates to the manufacturing method of the said photosensitive resin composition, a light-shielding film, and a liquid crystal display device. Background technique [0002] In recent years, color liquid crystal display devices (Liquid Crystal Display, LCD) are used in all fields such as liquid crystal televisions, liquid crystal monitors, and color liquid crystal mobile phones. Among...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/004G03F7/027G02F1/1339
CPCG02F1/1339G03F7/004G03F7/027G02F1/13398G02F1/13394G03F7/0007C08K5/0041G02F1/1333G02F1/136H01L29/786
Inventor 小野悠树滑川崇平
Owner NIPPON STEEL CHEM &MATERIAL CO LTD
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