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Polarizing film, protective plate for image display device, and retardation film

A polarizing film and film technology, applied in the direction of optics, optical elements, polarizing elements, etc., can solve the problems of liquid crystal unit degradation, etc., and achieve the effects of reducing reflection, suppressing temperature rise, and suppressing reflection

Pending Publication Date: 2019-07-05
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is, there is a disadvantage that internal components such as a liquid crystal cell are overheated and deteriorated

Method used

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  • Polarizing film, protective plate for image display device, and retardation film
  • Polarizing film, protective plate for image display device, and retardation film
  • Polarizing film, protective plate for image display device, and retardation film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0214] Such as figure 1 As shown, TAC film (thickness 65 μm, first transparent resin film), acrylic adhesive layer (thickness 23 μm, first adhesive layer), infrared reflection layer, λ / 4 plate (thickness 50 μm, first 1 / 4 wavelength layer), acrylic adhesive layer (thickness 23 μm, third adhesive layer), TAC film (thickness 40 μm, second transparent resin film), polarizer (thickness 22 μm, iodine-impregnated PVA), λ / 4 plate (thickness 50 μm, second 1 / 4 wavelength layer), acrylic adhesive layer (thickness 23 μm, fourth adhesive layer), TAC film containing ultraviolet absorber (thickness 60 μm, third transparent resin film ) were laminated so as to be arranged in order from the bottom to produce the polarizing film of the example.

[0215] It should be noted that as the infrared reflection layer, amorphous ITO (thickness 40nm, first inorganic oxide layer), silver-copper alloy (thickness 8nm, metal layer) and amorphous ITO (thickness 40nm, second inorganic oxide layer) were use...

Embodiment 2

[0218] Except having changed the thickness of the metal layer of an infrared reflection layer into 12 nm, it carried out similarly to Example 1, and produced the polarizing film and the protective plate for image display apparatuses.

Embodiment 3

[0220] Except having changed the thickness of the metal layer of an infrared reflection layer into 20 nm, it carried out similarly to Example 1, and produced the polarizing film and the protective plate for image display apparatuses.

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Abstract

This polarizing film is provided with a first transparent resin film, an infrared radiation reflective film, and a polarizer, in this order, on one side in the thickness direction, the infrared radiation reflective film being provided with a first inorganic oxide layer, a metal layer, and a second inorganic oxide layer, in this order.

Description

technical field [0001] The present invention relates to a polarizing film, a retardation film, and a protective plate for an image display device. Specifically, it relates to a polarizing film, a retardation film, and a protective plate for an image display device suitable for optical use. Background technique [0002] Large-scale liquid crystal displays are widely used as digital signage and information displays. These large-scale liquid crystal displays are often installed outdoors, and therefore, protective plates such as glass plates are provided on the surface for the purpose of preventing breakage. Furthermore, in order to prevent reflection and reflection of strong external light, such as sunlight, and to improve visibility, an antireflection film is provided on the surface of a protective plate (refer patent document 1.). [0003] However, for a liquid crystal image display device installed outdoors, thermal damage due to sunlight can be cited as failures other than...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02B5/26G02F1/1335G02F1/13363
CPCG02B5/30G02B5/26G02F1/13363
Inventor 藤野望梨木智刚加藤惠
Owner NITTO DENKO CORP
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