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Polarizer protective film, method for preparing the protective film, and polarizing plate containing the protective film

A protective film and polarizer technology, applied in the field of polarizers, can solve the problems of difficulty in developing multi-purpose primers, reduced adhesion, different physical and chemical properties, etc., and achieve high hardness, high transparency, and simple preparation process Effect

Active Publication Date: 2018-03-13
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the case where the film is produced by a stretching process, the adhesion is reduced due to, for example, macromolecular rearrangement in the stretching process
Therefore, an additional process to ensure adhesion (adhesion of the primer) is required, however, at this time, another process should be added to the film preparation process, and the physical and chemical properties of the film are different from the film, making it difficult to develop multipurpose primer

Method used

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  • Polarizer protective film, method for preparing the protective film, and polarizing plate containing the protective film
  • Polarizer protective film, method for preparing the protective film, and polarizing plate containing the protective film
  • Polarizer protective film, method for preparing the protective film, and polarizing plate containing the protective film

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preparation example Construction

[0021] In addition, the preparation method of the polarizer protective film of the present invention includes: applying a first composition for forming an adhesion-enhancing layer on at least one surface of a substrate; irradiating the applied first composition with ultraviolet rays; First photocuring; applying a second composition for forming a photocurable layer on the first composition cured in the first photocuring; and performing the second photocuring by irradiating the applied second composition with ultraviolet rays Photocuring, wherein the first composition includes a photocurable monofunctional monomer having a reactive group capable of hydrogen bonding, and a photopolymerization initiator, and the second composition includes a photocurable compound and a photopolymerization initiator.

[0022] In addition, the polarizer protective film of the present invention includes: a substrate; and a hard coat layer formed in direct contact with the substrate on at least one sur...

Embodiment approach

[0075] In addition, according to another exemplary embodiment of the present invention, the method for preparing a polarizer protective film of the present invention may further include drying the first composition cured in the first photocuring before the second photocuring. second composition.

[0076] The drying process flattens the coated surface of the composition and volatilizes the solvent contained in the composition, so that a polarizer protective film with better optical performance can be prepared.

[0077] According to an exemplary embodiment of the present invention, the photocurable layer in the preparation method of a polarizer protective film may be, but not limited to, an anti-reflection layer, an anti-glare layer or an anti-scratch layer, and according to the polarizer protective film to be prepared use changes. Its detailed description is as described above regarding the polarizer protective film.

[0078] Meanwhile, a polarizer protective film according t...

preparation Embodiment 1

[0116] A resin composition was prepared by mixing 47.5 wt% of 2-hydroxyethyl acrylate, 2.5 wt% of Irgacure 184 as a photopolymerization initiator, and 50 wt% of methyl ethyl ketone as an organic solvent.

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Abstract

The invention relates to a polarizer protective film, a preparation method of the protective film, and a polarizing plate containing the protective film. More specifically, the present invention relates to a polarizer protective film that has excellent adhesion and exhibits excellent physical and optical properties, and a polarizing plate containing the protective film. The polarizer protective film and the polarizing plate containing the protective film according to the present invention provide high hardness, high transparency, and high scratch resistance, and thinning is possible, so they can be easily used in various display devices.

Description

technical field [0001] The invention relates to a polarizer protective film, a preparation method of the protective film, and a polarizer containing the protective film. More particularly, the present invention relates to a polarizer protective film having excellent adhesion and exhibiting excellent physical and optical properties, a method for producing the protective film, and a polarizing plate including the polarizer protective film. [0002] This application claims Korean Patent Application No. 2013-0071738 and No. 2013-0071748 filed with the Korean Intellectual Property Office on June 21, 2013, and Korean Patent Application No. Priority and benefit to 2014-0075073 and No. 2014-0075074, the entire contents of these patent applications are incorporated herein by reference. Background technique [0003] Liquid crystal displays (LCDs) are currently one of the most widely used flat panel displays. Generally, a liquid crystal display has a structure in which a liquid cryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30B32B27/30C08J5/18B29D7/01
CPCG02B5/3033C09J4/00G02B1/14C09D4/06G02B5/305
Inventor 李汉娜张影来沈载勋徐姃贤姜俊求
Owner LG CHEM LTD