Activating treatment method for optical film, method for producing optical laminated-film, optical laminated-film, and image display device

A technology of optical film and processing method, which is applied in thin material processing, chemical instruments and methods, optics, etc. It can solve the problems of unpredictable foreign matter defects, no records or revelations of prevention methods, etc., and achieve reduced appearance defects and excellent adhesion , Improve the effect of adhesion

Inactive Publication Date: 2014-01-01
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the occurrence of foreign matter defects cannot be expected, and there is no description or suggestion of a method for preventing their occurrence.

Method used

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  • Activating treatment method for optical film, method for producing optical laminated-film, optical laminated-film, and image display device
  • Activating treatment method for optical film, method for producing optical laminated-film, optical laminated-film, and image display device
  • Activating treatment method for optical film, method for producing optical laminated-film, optical laminated-film, and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] use figure 1 In the shown device, the optical film 3 laminated so that the thin polarizing plate is on the front side (the surface side where the compensation plate contacts the ground roll 1 ) is used, and the optical film 3 is conveyed while being adhered to the outer peripheral surface of the ground roll 1 , while using the treatment electrode 4 to perform corona discharge treatment. The surface temperature of the ground roller 1 is cooled to 25°C, and the discharge capacity during corona discharge is (250) W / m 2 .

Embodiment 2～5

[0133] Activation treatment was performed in the same manner as in Example 1 except that the amount of discharge treatment during the corona discharge treatment was changed to the amount described in Table 1.

Embodiment 6

[0135] In addition to changing corona discharge treatment to atmospheric pressure plasma treatment (discharge capacity 250W·min / m 2 ) except that the activation treatment was performed by the same method as in Example 1.

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Abstract

An activating treatment method for an optical film includes feeding the optical film along a roll, and subjecting the optical film to the activating treatment from a side of the optical film that is opposite to a side of the optical film at which the roll is located. The activating treatment is conducted while the roll is cooled.

Description

technical field [0001] The invention relates to an activation treatment method of an optical thin film and a manufacturing method thereof. Moreover, this invention relates to the optical film obtained by this manufacturing method. This optical film can be formed alone or by laminating image display devices such as liquid crystal display (LCD), organic EL display, CRT, and PDP. Background technique [0002] A liquid crystal display device visualizes a polarized state by switching of liquid crystals. Based on this display principle, an optical film such as a polarizing film in which a transparent protective film is bonded to both sides of a polarizer via an adhesive layer is used. As a polarizer, for example, an iodine-based polarizer having a structure in which iodine is adsorbed to polyvinyl alcohol and stretched has a high transmittance and a high degree of polarization, and is therefore widely used as the most common polarizer. As the transparent protective film, triacet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/12G02B5/30
CPCG02B5/30B29D11/00634G02B5/3033B29D11/0073Y10T428/2848G02B1/14B32B37/12B32B7/023G02F1/133528B32B2457/20H10K59/50
Inventor 品川雅井上龙一
Owner NITTO DENKO CORP
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