Antistatic optical film, antistatic adhering optical film, their prodn. and image display

An optical film, anti-static technology, applied in the field of anti-static adhesive optical film, can solve the problems of difficult adhesive layer, lack of stability, etc.

Active Publication Date: 2005-08-31
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the method of Patent Document 2, it is difficult to maintain the characteristics as an adhesive layer, and it lacks stability

Method used

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  • Antistatic optical film, antistatic adhering optical film, their prodn. and image display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] (production of optical film)

[0113] A polyvinyl alcohol film having a thickness of 80 μm was stretched 5 times in an iodine aqueous solution at 40° C., and then dried at 50° C. for 4 minutes to obtain a polarizer. A triacetyl cellulose film was bonded to both sides of the polarizer using a polyvinyl alcohol-based adhesive to obtain a polarizing plate.

[0114] (Formation of antistatic layer)

[0115] An aqueous solution having a solid content concentration of 0.8% was prepared using a polyurethane-based resin as a binder and a water-soluble polythiophene-based conductive polymer. The ratio (weight ratio) of the binder to the conductive polymer is the former: the latter = 10:1. The solution was coated on one side of the polarizer so that the thickness after drying reached 100 nm, and dried at 80° C. for 2 minutes to form an antistatic layer.

[0116] (formation of adhesive layer)

[0117]As the base polymer, dissolve 95 parts of butyl acrylate, 5 parts of acrylic a...

Embodiment 2

[0121] In the formation of the antistatic layer in Example 1, an antistatic adhesive polarizing plate was produced in the same manner as in Example 1, except that the polyurethane resin used as the binder was changed to an acrylic resin.

Embodiment 3

[0123] In the formation of the antistatic layer in Example 1, except that the polyurethane resin used as the binder was changed to a polyester resin, an antistatic adhesive polarizing plate was produced in the same manner as in Example 1.

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Abstract

The invention provides an antistatic optical film which is made by laminating an antistatic layer on at least a half side of an optical film, the antistatic layer contains water-soluble or water-dispersion conductive polymer and binder component.

Description

technical field [0001] The present invention relates to an antistatic optical film in which an antistatic layer is laminated on at least one surface of the optical film. In addition, the present invention relates to an antistatic pressure-sensitive adhesive optical film in which an adhesive layer is laminated on the antistatic layer of the above-mentioned antistatic optical film. It further relates to image display devices such as liquid crystal display devices, organic EL display devices, and PDPs using the above-mentioned antistatic optical film and antistatic pressure-sensitive adhesive optical film. As said optical film, a polarizing plate, retardation film, an optical compensation film, a luminance improvement film is mentioned, and the laminated film etc. which laminated|stacked these are mentioned further. Background technique [0002] For liquid crystal displays, etc., it is necessary to arrange polarizing elements on both sides of the liquid crystal cell depending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10B32B27/00B32B27/30B32B27/36B32B27/40C09J7/02C09J133/00C09K3/16G02F1/1335G09F9/00H01L51/50H05B33/02H05B33/14
CPCG02B1/14G02B1/16G02B1/18G02B2207/121
Inventor 井上真一佐竹正之小笠原晶子细川敏嗣白藤文明
Owner NITTO DENKO CORP
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