Reflection decreasing material, and electronic image displaying device using it

An anti-reflection layer and reflection curve technology, applied in the field of anti-reflection laminated films, can solve the problems of detrimental to the color reproducibility of the display device and the color rendering of the anti-reflection layer, reducing the quality of the display device, and detrimental to the appearance of the display device.

Active Publication Date: 2007-08-15
HIGASHIYAMA FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-uniform light interference will cause a problem of deteriorating the appearance of the display device, and will significantly reduce the quality of the display device
If the thickness of the hard coat layer is 1 to 3 μm, there is a problem that the red and green color development of the hard coat layer due to the above-mentioned interference impairs the color reproducibility of the display device and the antireflection layer. color rendering

Method used

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  • Reflection decreasing material, and electronic image displaying device using it
  • Reflection decreasing material, and electronic image displaying device using it
  • Reflection decreasing material, and electronic image displaying device using it

Examples

Experimental program
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preparation example Construction

[0072] Preparation examples, examples, and comparative examples of the present invention will now be described. First, the measurement of the refractive index of the cured coating liquid forming the antireflection layer will be described.

[0073] (1) Using a dip coater (manufactured by Sugiyama Moto Rikaki Co., Ltd.), the coating liquid for forming the antireflection layer was applied to an acrylic plate with a refractive index of 1.49 (trade name: "Delaglas A", Asahi Kasei Industries, Ltd. Co., Ltd.) on. The amount of the coating liquid used was adjusted so that a layer having an optical film thickness of about 550 nm could be formed after drying.

[0074] (2) The solvent is removed from the coating liquid layer to form a dried coating film. If necessary, the coating liquid was cured by irradiating with 400 mJ of ultraviolet rays from a 120 W high-pressure mercury lamp in a nitrogen atmosphere using an ultraviolet radiation apparatus (manufactured by Iwasaki Electric Co., ...

manufacture example 1-1

[0094] [Manufacturing Example 1-1: Preparation of Coating Liquid for Interference Layer Formation (IF-1)]

[0095] By dissolving or dispersing 30 parts by mass of dipentaerythritol hexaacrylate, 20 parts by mass of tetramethylolmethane triacrylate, and 50 parts by mass of tin oxide with an average particle diameter of 0.05 μm in 1000 parts by mass of 2-butanol Microparticles and 2 parts by mass of a photopolymerization initiator (trade name: IRGACURE907, manufactured by Ciba Specialty Chemicals) were used to prepare a coating solution (IF-1) for forming an interference layer. The refractive index of the cured product of the coating liquid (IF-1) was 1.58.

manufacture example 1-2

[0096] [Manufacturing Example 1-2: Preparation of coating solution (HC-1) for forming a hard coat layer]

[0097] By adding 70 parts by mass of dipentaerythritol hexaacrylate, 30 parts by mass of 1,6-bis(3-acryloyloxy-2-hydroxypropoxy) hexane, 4 parts by mass of photopolymerization initiator (trade name : IRGACURE 184, manufactured by Chiba Specialty Chemical), and 100 parts by mass of isopropyl alcohol were mixed to prepare a coating liquid (HC-1) for forming a hard coat layer. The refractive index of the cured product of the coating liquid (HC-1) was 1.52.

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PUM

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Abstract

There is provided a reflection-reducing layered film which simultaneously improves the reflection preventing ability and suppresses coloring. The reflection-reducing layered film includes: an interference layer (12) layered on a transparent resin film (11), a hard code layer (13) layered on the interference layer (12), and a reflection-reducing layer (14) layered on the hard code layer (13). This reflection-reducing layered film satisfies the following requirements and can simultaneously improve the reflection preventing ability and suppress the coloring. [i] The maximum amplitude of the reflectance curve in the wavelength area of 500 nm to 650 nm is not greater than 1%. [ii] The luminosity reflectance Y for the CIE standard illuminant D65 is not greater than 2%. [iii] The ab chroma Cab for the CIE standard illuminant D65 is not greater than 10.

Description

technical field [0001] The present invention relates to an almost colorless antireflection laminated film provided in a display device, and a display device using the antireflection laminated film. Background technique [0002] In recent years, thin and large display devices, such as plasma display panels (PDPs) and liquid crystal displays (LEDs), have been developed. In order to improve the visibility of large display devices, the screen can be anti-reflection treated. [0003] Generally, the purpose of performing anti-reflection treatment on a display device is to reduce the reflectance of the display device within a wavelength range (550-600 nm) approximately in line with the maximum human visual sensitivity. An antireflection laminated film capable of significantly reducing reflectance in a wavelength range of about 550 to 600 nm is provided in the display device. However, the anti-reflection film thus designed has a so-called "V-shaped" reflection spectrum, and when l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11G02B1/10B32B7/02
CPCB32B17/10174B32B17/10018G02B1/111
Inventor 野岛孝之野口昌太郎
Owner HIGASHIYAMA FILM CO LTD
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