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Transparent substrate provided with antiglare film

A transparent substrate and anti-glare film technology, applied in optics, instruments, optical components, etc., can solve the problem of reduced visibility and achieve high visibility, high anti-glare, and low glare effects

Pending Publication Date: 2020-09-18
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In image display devices (such as liquid crystal displays, organic EL displays, plasma displays, etc.) equipped in various devices (such as televisions, personal notebooks, smart phones, mobile phones, vehicles, etc.), if indoor lighting such as fluorescent lamps, sunlight When external light is reflected on the display surface, the visibility is reduced due to the reflected image

Method used

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  • Transparent substrate provided with antiglare film
  • Transparent substrate provided with antiglare film
  • Transparent substrate provided with antiglare film

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0058] figure 1 It is a cross-sectional view schematically showing the first embodiment of the transparent substrate with an anti-glare film of the present invention. figure 1 The illustrated transparent substrate 10 with an antiglare film includes a transparent substrate 11 having a first main surface 11a and a second main surface 11b, and an antiglare film 14 formed on the first main surface 11a.

[0059] [Transparent substrate 11]

[0060] As a material of the transparent base 11, glass, resin, etc. are mentioned. Examples of the resin include ethylene terephthalate, polycarbonate, triacetyl cellulose, polymethyl methacrylate, and the like. Among them, it is preferable that the transparent plate is glass from the viewpoint of safety and strength. In addition, glass is also preferably used for vehicle-mounted display members from the viewpoint of high heat resistance and high weather resistance.

[0061] When the transparent base 11 is made of glass, for example, the mec...

no. 2 Embodiment approach

[0117] figure 2 It is a cross-sectional view schematically showing a second embodiment of the transparent substrate with an anti-glare film of the present invention. figure 2 The illustrated transparent substrate 20 with an antiglare film includes a transparent substrate 21 having a first principal surface 21a and a second principal surface 21b, and an antiglare film 24 formed on the first principal surface 21a. The description of the configuration common to the first embodiment is omitted.

[0118] figure 2 In the shown transparent substrate 20 with an antiglare film, the antiglare film 24 consists of a low refractive index layer 22 formed on the first main surface 21a of the transparent substrate 21, and a high refractive index layer formed in the low refractive index layer 22. layer 23.

[0119] figure 2 The high refractive index layer 23 of the illustrated transparent substrate 20 with antiglare film is a discontinuous layer.

[0120] In this specification, a disc...

no. 3 Embodiment approach

[0151] image 3 It is a cross-sectional view schematically showing a third embodiment of the transparent substrate with an antiglare film of the present invention. image 3 The shown transparent substrate 30 with an antiglare film is formed with a transparent substrate 31 on a first principal surface 31a and a second principal surface 31b, and an antiglare film 34 formed on the first principal surface 31a. The antiglare film 34 It consists of the high-refractive-index layer 33 formed on the 1st main surface 31a of the transparent base 31, and the low-refractive-index layer 32 formed in the high-refractive-index layer 33.

[0152] image 3 The shown low refractive index layer 32 of the transparent substrate 30 with an anti-glare film is a continuous layer.

[0153] That is, it is a configuration in which the low-refractive-index layer 12 and the high-refractive-index layer 13 of the antiglare film 14 of the first embodiment are replaced, and achieves the same effect as that o...

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Abstract

A transparent substrate provided with an antiglare film, having a transparent substrate provided with a first principal surface and a second principal surface, and an antiglare film formed on the first principal surface, wherein the antiglare film is constituted from a low-refractive-index layer and a high-refractive-index layer which is formed in the low-refractive-index layer and which has a different refractive index from the low-refractive-index layer, the refractive index nlow at a wavelength of 550 nm of the low-refractive-index layer is 1.4-1.8, the refractive index nhigh at a wavelength of 550 nm of the high-refractive-index layer is at least 0.1 higher than nlow, the area ratio of a portion having a surface inclination of 0.5 degree or less with respect to the first principal surface is 15% or less, and the average length RSm of elements of a roughness curve of the outermost surface on the first principal surface side is 50 [mu]m or less.

Description

technical field [0001] The invention relates to a transparent substrate with an antiglare film. Background technique [0002] In image display devices (such as liquid crystal displays, organic EL displays, plasma displays, etc.) equipped in various devices (such as televisions, personal notebooks, smart phones, mobile phones, vehicles, etc.), if indoor lighting such as fluorescent lamps, sunlight When external light is reflected on the display surface, the visibility decreases due to the reflected image. [0003] As a method of suppressing reflection of external light, there is a method of arranging an anti-glare film on the display surface side of an image display device. The anti-glare film has irregularities on the surface, which diffusely reflects external light and makes the reflected image unclear. "Diffuse reflection" refers to reflection that is reflected (scattered) at an angle different from the angle of incidence with respect to a surface among reflections. Suc...

Claims

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Application Information

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IPC IPC(8): G02B5/02B32B7/023
CPCB32B7/023G02B5/0221G02B5/0284G02B1/115G02B5/0294G02B1/11G02B5/0236G02F1/133502G02F2201/38G02F1/133504G02F2203/03B32B2307/40
Inventor 一色真诚池田彻竹田洋介下坂鹰典村上贵章
Owner ASAHI GLASS CO LTD
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