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Coating composition for antireflection, antireflection film and method for preparing the same

An anti-reflection film, composition technology, applied in anti-reflection coatings, nanotechnology for materials and surface science, coatings, etc., can solve problems such as difficulty in obtaining wear resistance, poor wear resistance, and resolution degradation , to achieve the effect of reducing production cost, improving processing efficiency, excellent wear resistance and low refraction characteristics

Active Publication Date: 2012-09-05
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in deteriorating resolution in high-resolution displays and degrading sharpness of images due to diffuse reflection
However, there is still the problem of increased manufacturing cost due to multi-layer coating
However, since the shape and size of the ultrafine particles should be uniform, and these particles should be uniformly dispersed on the substrate, it is difficult to implement this method by the usual coating method
Moreover, since the amount of adhesive should be equal to or less than the predetermined amount in order to obtain a spherical shape on the surface of the film, this method results in very poor abrasion resistance.
In addition, since the thickness of the coating should also be smaller than the diameter of the fine particles, it is difficult to obtain wear resistance

Method used

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  • Coating composition for antireflection, antireflection film and method for preparing the same
  • Coating composition for antireflection, antireflection film and method for preparing the same
  • Coating composition for antireflection, antireflection film and method for preparing the same

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preparation example Construction

[0095] Preparation The method for preparing an anti-reflection film according to the present invention comprises the following steps:

[0096] a) preparing the above-mentioned coating composition for antireflection;

[0097] b) applying the coating composition to a substrate to form a coating;

[0098] c) drying the coating to phase separate the low and high refractive materials; and

[0099] d) Curing the dried coating.

[0100] In step b), the substrate may be glass, plastic sheet or film, and its thickness is not limited. Examples of plastic films may include cellulose triacetate films, norbornene cycloolefin polymer films, polyester films, polymethacrylate films, and polycarbonate films, but are not limited thereto.

[0101] In step b), the method of coating the coating composition can be such as rod coating, two-roll or three-roll reverse coating, gravure coating, die coating (die coating), micro gravure coating Various methods of coating method and continuous coating...

Embodiment approach

[0112] Hereinafter, preferred examples are provided for better understanding of the present invention. However, these examples are for illustrative purposes only, and the present invention is not intended to be limited by these examples.

Embodiment 1

[0132] 30 parts by weight of low refraction-thermosetting material A and 70 parts by weight of high refraction-UV curable material E were uniformly mixed to prepare a coating composition for antireflection.

[0133] The prepared composition was coated on a cellulose triacetate film having a thickness of 80 μm using a wire bar (No. 5). The film was dried in an oven at 60°C for 2 minutes and irradiated by 1J / cm 2 Dosage of UV to cure, followed by heat curing in a 120 ℃ oven for 1 day. The final coating thickness was 1 μm, and the cross-section was observed under a transmission electron microscope, which is shown in figure 1 middle.

[0134] refer to figure 1 , it was found that a high-refractive material layer and a low-refractive material layer were respectively formed in a layer structure on the substrate. When a layered structure is formed of materials having different refractive indices, more effective reflectance can be obtained compared to a single-layered structure. ...

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Abstract

The present invention provides a coating composition for ant iref lection that includes a low refractive material having a refractive index of 1.2 to 1.45 and a high refractive resin having a refractive index of 1.46 to 2, in which the difference in the surface energy between two materials is 5 mN / m or more; an ant iref lection film manufactured using the coating composition for ant iref lection;and a method of manufacturing the ant iref lect ion film. According to the present invention, the ant iref lect ion film having excellent abrasion resistance and antiref lection characteristic can bemanufactured using a single composition by one coating process, thereby reducing manufacturing cost.

Description

technical field [0001] The invention relates to a coating composition for antireflection, an antireflection film prepared by using the coating composition for antireflection and a method for preparing the antireflection film. More specifically, the present invention relates to a coating composition for antireflection in which although a single-layer coating is formed by a one-step coating method using a coating composition containing resins having different refractive indices from each other, in the A single-layer coating also exhibits phase separation to simultaneously provide anti-reflection properties and abrasion resistance; an anti-reflection film prepared using the coating composition for anti-reflection; and a method for preparing the anti-reflection film. [0002] This application claims Korean Patent Application No. 10-2007-0115348 and No. 10-2007-0115329 filed on November 13, 2007 at the Korean Intellectual Property Office, Korean Patent Application No. 10-2007-0115...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/20C09D5/00C09D183/04
CPCC09D7/125G02B1/11G02B5/3033C08K3/16C08K7/22C09D5/006C09D183/04C09D183/08C09D7/42C09D7/61C09D7/65C09D7/67C09D7/68G02B1/111B82B3/00B82Y30/00C09D5/00C09D133/08
Inventor 尹汉植金惠珉金芙敬张影来
Owner LG CHEM LTD
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