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Polarized light film and its manufacturing method, optical film and image display device

一种偏振光薄膜、制造方法的技术，应用在光学、层压装置、光学元件等方向

Inactive Publication Date: 2002-11-20
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of manufacture method of polarizing film, to solve the problem brought because of using adhesive

Method used

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  • Polarized light film and its manufacturing method, optical film and image display device
  • Polarized light film and its manufacturing method, optical film and image display device
  • Polarized light film and its manufacturing method, optical film and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 1 As shown in (a), a protective film with a softening point of 125°C is pasted on both sides of the polarizer, passed through the conveying roller, heated to 130°C by the IR heater, and laminated by pinch rollers to obtain polarized light film. The heating time (passage time between the rolls) was 2 seconds, and the linear pressure of the pinch rolls was 20 N / cm. The obtained polarizing film polarizer was bonded to the protective film, and there was no problem in appearance.

Embodiment 2

[0074] Such as figure 1 As shown in (b), a protective film with a softening point of 125°C is pasted on both sides of the polarizer, passed through a conveying roller, heated to 130°C by hot air, and laminated by pinch rollers to obtain a polarizing film. The heating time (passage time between the rolls) was 4 seconds, and the linear pressure of the pinch rolls was 40 N / cm. In the obtained polarizing film, the polarizer was bonded to the protective film, and there was no problem in appearance.

Embodiment 3

[0076] Such as figure 1 As shown in (c), a protective film with a softening point of 125° C. is pasted on both sides of the polarizer, and laminated by pinch rollers heated to 130° C. to obtain a polarizing film. The heating time (passage time between the rolls) was 0.1 second, and the linear pressure of the pinch rolls was 20 N / cm. The obtained polarizing film polarizer was bonded to the protective film, and there was no problem in appearance.

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Abstract

A method for manufacturing a polarizing film, a polarizing film, an optical film, and an image display device, comprising affixing a protective film (B) on at least one surface of a polarizing mirror (A), and bonding it with heat and pressure The lamination method can manufacture the polarized light film without using a binder, and can solve the problems caused by using the binder in the manufacture of the polarized light film.

Description

technical field [0001] The invention relates to a manufacturing method of a polarizing film. The obtained polarizing film is used alone or laminated as an optical film to form an image display device such as a liquid crystal display device, an organic EL display device, or a PDP. Background technique [0002] In a liquid crystal display device, it is essential to arrange polarizers on both sides of the glass substrate forming the uppermost surface of the liquid crystal panel in view of the image formation method. Generally, a polarizing film is formed by attaching a protective film to a polarizer composed of a polyvinyl alcohol-based film and a dichroic substance such as iodine. [0003] The conventional polarizing film is manufactured by bonding a polarizer and a protective film with an adhesive. The adhesive is a compound or composition containing binding components, which can be used as a solution dissolved in water or an organic solvent, and hardened by heat, light, or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/02B29L7/00B29L9/00B29L11/00B32B7/02B32B37/20B32B38/00G02B5/30G02F1/1335
CPCB32B37/04B32B38/0036B32B2037/0092B32B2307/42B32B2310/0454B32B2310/0825G02B5/3033G02B5/30
Inventor 土本一喜杉野洋一郎正田位守
Owner NITTO DENKO CORP
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