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Antireflection film and process for producing the antireflection film

An anti-reflection film, anodizing technology, applied in other home appliances, applications, coatings, etc., can solve the problems of insufficient transmission performance and insufficient anti-reflection performance, and achieve the effect of excellent transmission performance

Inactive Publication Date: 2011-05-04
DNP FINE CHEMICALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these antireflection films not only have insufficient light antireflection performance, but also have insufficient light transmission performance, and further improvement is expected.

Method used

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  • Antireflection film and process for producing the antireflection film
  • Antireflection film and process for producing the antireflection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125]

[0126] A 99.85% aluminum rolled plate (2 mm thick) as an aluminum material was ground for 10 minutes with a single-sided flat polishing disc (manufactured by Speedfam) using an alumina-based abrasive (manufactured by FUJIMI INCORPORATED) to obtain a mirror surface. After scrubbing the abrasive surface, perform a non-aggressive degreasing treatment.

[0127] Then, a mold having tapered pores was produced by a combination of the anodization conditions shown below and the etching (pore diameter expansion) treatment conditions shown below for the formed anodized film.

[0128]

[0129] Use solution: 0.05M oxalic acid

[0130] Voltage: 80V DC voltage

[0131] Temperature: 5°C

[0132] Time: 50 seconds

[0133]

[0134] Liquid used: 2% by weight phosphoric acid

[0135] Temperature: 50°C

[0136] Time: 5 minutes

[0137] Anodic oxidation and etching (pore diameter expansion) were alternately repeated 5 times to obtain an anodized coating surface having tapered p...

Embodiment 2

[0149] As in Example 1, wherein instead of using an alumina-based grinding material for grinding, use a ball polishing wheel to grind using a grinding material based on silica gel (manufactured by FUJIMI INCORPORATED), except that it is the same as in Example 1 Get an anti-reflection film.

Embodiment 3

[0151] As in Example 1, wherein instead of using an alumina-based abrasive for grinding, use a bias cut cloth polishing wheel (manufactured by Koyo-Sha Co., Ltd.) using a silicic anhydride-based grease abrasive (manufactured by ICHIGUCHI Corporation) Except polishing, it carried out similarly to Example 1, and obtained the antireflection film.

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Abstract

Disclosed is an antireflection film having specific surface shape and properties provided as a result of finding of a surface shape and properties required of an antireflection film having excellent light antireflection properties and excellent light transmission properties. Also disclosed is a process for producing the antireflection film. The antireflection film is characterized in that the antireflection film is produced by processing the surface of an aluminum material by mechanical polishing, chemical polishing and / or electrolytic polishing, then producing a pattern having tapered pores on the surface of the aluminum material by a combination of anodic oxidation with etching of an anodic oxide film, and transferring the pattern onto an antireflection film forming material, the surface of the antireflection film has convexes having an average height of not less than 100 nm and not more than 1000 nm or concaves having an average depth of not less than 100 nm and not more than 1000 nm, the convexes or concaves are present at an average period of not less than 50 nm and not more than 400 nm in at least a certain one direction, and the haze is not more than 15%.

Description

technical field [0001] The present invention relates to an antireflection film having a specific surface shape and physical properties, specifically, to an antireflection film that prevents reflection of light and improves light transmission, and more specifically, relates to an antireflection film capable of imparting good performance to displays and the like. Visible antireflection film, and its manufacturing method. Background technique [0002] Flat panel displays (hereinafter, abbreviated as "FPD") such as liquid crystal displays (LCDs) and plasma displays (PDPs) must be provided with an antireflection film in order to ensure visibility. As the anti-reflection film, what have been used are: (1) The anti-reflection film obtained by the method generally called the dry method, that is, the multilayer dielectric film is made by the gas phase process, and the anti-reflection film with low reflectivity is realized by using the optical interference effect. Reflective film; (2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11B29C33/38B29C59/02B29L11/00B29K33/04G02B1/118
CPCB29C33/38B29C35/0888B29C59/046B29C2035/0827G02B1/118G02B1/111G02B1/12
Inventor 佐藤一也松本司渡边裕六波罗淳
Owner DNP FINE CHEMICALS CO LTD
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