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Method of producing anti-glare film

An anti-glare film and technology of preparation steps, applied in the directions of coating, instrument, transportation and packaging, can solve the problem of difficult viewing of the display due to reflected light, and achieve the effect of preventing whitening phenomenon and preventing the reduction of productivity.

Inactive Publication Date: 2011-07-13
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, in various displays such as cathode ray tube displays, liquid crystal displays, plasma displays, organic EL displays, etc., there is a problem that when indoor fluorescent lamps, outside sunlight, etc. hard to see display

Method used

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  • Method of producing anti-glare film

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach 》

[0047] Figures 1A to 1C is an explanatory diagram illustrating an example of a method of producing an antiglare film and figure 2 is a schematic diagram showing one example of an apparatus for producing an antiglare film. Although the present embodiment will be described with an example in which a coating solution containing two kinds of resins A and B is used, the basic concept is the same when two or more kinds of resins are contained.

[0048] (Step of mixing coating solution)

[0049] First, in the method for producing an antiglare film according to the present invention, two mutually incompatible resins A and B are dissolved in a solvent, and particles are further contained therein to prepare a coating solution (coating solution preparation step ).

[0050] As the particle and resin material, those described later can be used. Also, as the mixing method, any method may be employed without any limitation as long as the resin material is dissolved in the solvent and th...

Embodiment 1

[0130] On triacetyl cellulose (Fujitac, produced by Fujifilm Corporation) serving as a support with a thickness of 80 μm, the following coating solution was coated so that the thickness of the dry film became 6 μm. After coating, the coated film was dried at 60° C. for 1 minute at a drying air velocity of 0.5 m / sec, followed by heat treatment at 100° C. for 1 minute. In this way, an antiglare film provided with an antiglare layer was produced.

[0131]

[0132] The surface of hollow silica particles having an average particle diameter of 20 nm was hydrophobized with 3,3,3-trifluoropropylmethyldichlorosilane. A coating solution was prepared by dissolving 2 parts by mass of cellulose propionate, 15 parts by mass of an acrylic resin, and 0.2 parts by mass of hydrophobized hollow silica particles in 80 parts by mass of methyl ethyl ketone. The critical solid content concentration of this system is 29%.

[0133] The antiglare film thus obtained was cut into a predetermined size...

Embodiment 2

[0142] An antiglare film was prepared in the same manner as in Example 1 except that the particles used had an average particle diameter of 40 nm.

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Abstract

The method for producing an anti-glare film (10) includes a coating solution preparation step in which at least two mutually incompatible resin materials (54) are dissolved in at least one solvent to prepare a coating solution containing particles; a coating step in which the coating solution is coated on a support (16) to form a coating layer (52); a particle migration step in which the particles are made to migrate to the air-liquid interface of the coating layer (52) to be eccentrically located on the surface of the coating layer (52); and a drying step in which the coating layer (52) is dried and phase-separated to form an anti-glare layer (58) and, at the same time, a low refractive index layer (60) comprising the particles on top of the anti-glare layer (58).

Description

technical field [0001] The present invention relates to a method of producing an antiglare film for various displays, and in particular, an antiglare film capable of suppressing reflection of external light on a display, glare, and whitening phenomenon due to diffuse reflection. Background technique [0002] Generally, in various displays such as cathode ray tube displays, liquid crystal displays, plasma displays, organic EL displays, etc., there is a problem that when indoor fluorescent lamps, outside sunlight, etc. Difficult to view the display. To solve this problem, an anti-glare film is disposed on the surface of the display to scatter reflected light, thereby improving visibility. [0003] As such an antiglare film, many types have been proposed. For example, PTL 1 discloses a method in which particles such as resin beads are used to form concavo-convex shapes on the surface of a film and thereby scatter light. Furthermore, a method is disclosed in PTL 2 in which a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08K3/36G02B5/20G02F1/1335C08J7/046
CPCG02B5/0226C08J2301/12G02B5/0242C08J7/04G02B5/0268G02B1/111G02B5/0278G02F2201/38Y10T428/25C08J7/046
Inventor 盐尻一寻冲和宏齐木裕树
Owner FUJIFILM CORP
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