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Polarizing plate-carrier film laminate, method for producing same, method for producing polarizing plate using same, and polarizing plate

A carrier film and polarizer technology, applied in the field of polarizers, can solve problems such as tearing of polarizers, and achieve the effects of improving processability, improving optical properties, and improving peeling properties

Active Publication Date: 2020-07-24
杉金光电(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the protective film is directly formed on the existing polyvinyl alcohol-based stretched polarizer, compared with the case where the protective base material is conventionally applied on both surfaces, it is difficult to solve the The problem of tearing of the polarizer due to the stress generated by shrinkage

Method used

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  • Polarizing plate-carrier film laminate, method for producing same, method for producing polarizing plate using same, and polarizing plate
  • Polarizing plate-carrier film laminate, method for producing same, method for producing polarizing plate using same, and polarizing plate
  • Polarizing plate-carrier film laminate, method for producing same, method for producing polarizing plate using same, and polarizing plate

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preparation example Construction

[0285] The preparation of the carrier film may further include providing a primer layer on one or both surfaces of the carrier film by applying and drying the water-dispersible primer composition on one or both surfaces of the base film of the carrier film, respectively.

[0286] In the method for manufacturing a polarizing plate-carrier film laminate according to an exemplary embodiment of the present specification, the film supply process includes: supplying the carrier film 200 on one surface of the polarizer 100; A protective film 300 is supplied on the surface. Specifically, the method may be performed as a method of supplying the carrier film 200 on one surface of the polarizer 100 and simultaneously supplying the protective film 300 on the other surface of the polarizer 100 .

[0287] A method of supplying the polarizer 100, the carrier film 200, and the protective film 300 may be performed by using a method known in the art. For example, a polarizer, a carrier film, a...

Embodiment approach

[0353] Hereinafter, the specification will be described in more detail through examples. However, the following examples are provided to illustrate the present specification, and the scope of the present specification is not limited thereby.

preparation example 1-1

[0356] (1) Production Example 1-1: Production of a carrier film provided with a primer layer comprising a polyurethane-based resin

[0357] By containing 10% by weight of a water-dispersible polyurethane-based resin (trade name: PF-15 manufactured by Chokwang Paint Co., Ltd.), 1% by weight of a silicone-based lubricant based on 100% by weight of the entire composition, Wet agent, 0.5% by weight of colloidal silica particles and the rest of water were used to prepare the composition 1 for forming the primer layer.

[0358]Thereafter, after bar-coating the composition 1 for forming a primer layer on one surface of a polyethylene terephthalate (PET) film, the Layer Composition 1 was dried to evaporate the water. Thereafter, the carrier film was produced as follows: The polyethylene terephthalate film coated with the composition for forming the primer layer was stretched to 3.5 times in the TD direction, and carried out in an oven at 230° C. heat treatment.

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Abstract

The present invention relates to a polarizing plate-carrier film laminate. More specifically, the polarizing plate-carrier film laminate is characterized by including: a polarizer; a protective film provided on one surface of the polarizer; and a protective layer and a carrier film sequentially provided on the other surface of the polarizer, wherein the protective layer is directly attached to thepolarizer, the carrier film includes a substrate film and primer layers disposed on one or both surfaces of the substrate film, and the primer layer includes a water-dispersible polyurethane-based resin.

Description

technical field [0001] This specification relates to a polarizing plate-carrier film laminate, its manufacturing method, its method of manufacturing a polarizing plate, and a polarizing plate. Background technique [0002] Existing polarizing plates for liquid crystal display devices have a configuration in which a general polyvinyl alcohol-based polarizer is used, and a protective film such as PET is attached to at least one surface of the polarizer. [0003] Recently, due to increasing demands in terms of low light leakage and thinning in the polarizing plate market, in order to satisfy these physical characteristics, a method of directly forming a protective film on a polarizer has been studied instead of applying a pre-filmed existing protective base material . [0004] However, when the protective film is directly formed on the existing polyvinyl alcohol-based stretched polarizer, compared with the case where the protective base material is conventionally applied on bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30B32B27/06B32B7/12B32B37/12B32B37/10B32B37/26B32B27/38B32B38/00
CPCB32B7/12B32B27/06B32B27/08B32B27/30B32B27/38B32B37/10B32B37/12B32B37/26B32B38/00G02B5/3033G02B1/14B32B27/306C09J2301/312C09J7/255C09J7/50B32B27/36B32B2255/10B32B2255/26B32B2307/42C08J5/18C08J2363/00C09J5/02C09J2463/001C09J2467/006C09J2475/003
Inventor 李美昭权润京金镇佑金东旭
Owner 杉金光电(广州)有限公司
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