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Polarizer protective film, method for producing same, and polarizer

A manufacturing method and technology of protective film, which are applied in polarizing element, semiconductor/solid-state device manufacturing, identification device, etc., can solve the problems of insufficient sliding effect, large haze of polarizer protective film, difficulty in improving sliding, etc. The effect of solving haze deterioration, good handling and high production adaptability

Active Publication Date: 2021-03-16
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] As a result of repeated research by the present inventors on the method proposed in Patent Document 5, the effect of improving the sliding properties is not sufficient when a matting agent is contained in the hydrogenated norbornene-based resin.
In addition, when a large amount of matting agent is added to improve slipperiness, the haze (turbidity) of the polarizer protective film increases
[0012] Therefore, in hydrogenated norbornene-based resins, it is actually difficult to improve slipperiness without increasing haze.

Method used

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  • Polarizer protective film, method for producing same, and polarizer
  • Polarizer protective film, method for producing same, and polarizer
  • Polarizer protective film, method for producing same, and polarizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0241] Polarizer protective film (Hereinafter, simply referred to as "protective film".)

[0242]

[0243] (Preparation of microparticle dispersion a)

[0244] 90 parts by mass of ethanol was put into an airtight container, and 10 parts by mass of silicon oxide fine particles a (manufactured by Nippon Aerosil Co., Ltd.) listed in Table 1 were added with stirring. Then, after stirring and mixing in the dissolver for 50 minutes, the above-mentioned 2000g mixed solution was passed through a high-pressure dispersion device (trade name: ultra-high pressure homogenizer M110-E / H, manufactured by Microfluidics Corporation), and 1 treatment was carried out at 175Mpa. Thus, a fine particle dispersion liquid a was prepared.

[0245] (Preparation of microparticle additive solution A)

[0246] The obtained fine particle dispersion a was slowly added to a closed container containing dichloromethane while stirring well. Further, dispersion is carried out by an attritor. This was filter...

Embodiment 2

[0308]

[0309] On one side (A side) of the polarizer 1, the protective film 101 is bonded in a direction parallel to the transmission axis of the polarizer 1 by a PVA-based adhesive, and on the other side (B side) of the polarizer 1 The following protective film 203 was bonded to the surface) to obtain a polarizing plate 301 . As described in Table 3, except having combined the protective film and the polarizer, it carried out similarly to the polarizing plate 301, and produced the polarizing plate 302 - the polarizing plate 326.

[0310] Protective film 201

[0311] (Polyethylene naphthalate film, TEONEX Q83 (trade name) (manufactured by Teijin DuPont Co., Ltd.), thickness: 40 μm)

[0312] Protective film 202

[0313](Polyethylene terephthalate film, MRF40 (trade name) (manufactured by Mitsubishi Plastics Corporation) Thickness: 25 μm)

[0314] Protective film 203

[0315] (Triacetyl cellulose film, KC4UAW (trade name) manufactured by Konica Metanon Co., Ltd., thicknes...

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Abstract

An object of the present invention is to provide a polarizer protective film containing a norbornene-based resin and having improved slidability without increasing haze. Moreover, the manufacturing method of this polarizer protective film, and the polarizer provided with this polarizer protective film are provided. The polarizer coating film contains a hydrogenated norbornene-based resin and fine particles, the average particle diameter of the secondary particles of the fine particles is in the range of 0.05 to 0.20 μm, and the relative standard deviation of the particle diameter of the secondary particles is 5 to 20 μm. %, and the peak density of the surface of the polarizer protective film is 1000 to 5000 (pcs / mm 2 )In the range.

Description

technical field [0001] The present invention relates to a polarizer protective film and a manufacturing method thereof. Moreover, this invention relates to the polarizing plate which has a polarizing plate protective film. More specifically, the present invention relates to a polarizer protective film with improved slidability and a method for producing the same. Background technique [0002] In recent years, applications of liquid crystal display devices, organic electroluminescence (hereinafter simply referred to as "organic EL") display devices, touch panels, and the like are expanding. In such devices, various resin films are used for supports, protective films, and the like. Among them, a film formed by hydrogenation (hereinafter referred to as "hydrogenation") norbornene-based resin has high heat resistance and low water absorption. Therefore, a film formed of a hydrogenated norbornene-based resin is preferably used because it is excellent in dimensional stability a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30C08J5/18G09F9/30H01L27/32H01L51/50H05B33/02
CPCC08J5/18G02B5/30G09F9/30H05B33/02H10K59/8791
Inventor 高木隆裕
Owner KONICA MINOLTA INC
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