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Hard coating film and image display device having the same

A hard coating film and hard coating technology, applied in the field of image display devices, can solve the problems of insufficient bending and scratch resistance, curling, etc., and achieve the effects of excellent scratch resistance and excellent bending resistance.

Inactive Publication Date: 2018-03-13
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of such a hard coat composition having high hardness, there are problems of insufficient bending resistance and / or scratch resistance and occurrence of curling

Method used

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  • Hard coating film and image display device having the same
  • Hard coating film and image display device having the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0097] Preparation Example 1: Preparation of the First Hard Coating Composition

[0098] Based on the total weight of 100% by weight of the first hard coat composition, 40% by weight of dendrimers having terminal (meth)acrylate groups (SP-1106, Miwon Specialty Chemicals), 5% by weight Monofunctional acrylate (butyl acrylate), 39% by weight of inorganic silica particles (particle size 10-15nm), 2.5% by weight of photopolymerization initiator (1-hydroxycyclohexyl phenyl ketone), 0.5% by weight % of a leveling agent (BYK-3570, BYK Chemie) and 13% by weight of a solvent (methyl ethyl ketone) were mixed, and then filtered using a polypropylene (PP) filter to prepare a first hard coat composition.

preparation example 2

[0099] Preparation Example 2: Preparation of the second hard coat composition

[0100] Based on the total weight of 100% by weight of the second hard coat composition, 40% by weight of polysiloxane resin (SP-3T, Shin-A T&C), 5% by weight of inorganic silica particles ( particle size 10-15nm), 2.5% by weight of photopolymerization initiator (bis(4-methylphenyl) iodonium hexafluorophosphate), 0.5% by weight of leveling agent (BYK-3570, BYKChemie) and 52% by weight % solvent (methyl ethyl ketone), and then filtered using a polypropylene (PP) filter to prepare a second hard coat composition.

Embodiment 1 to 3 and comparative example 1 to 2

[0101] Examples 1 to 3 and Comparative Examples 1 to 2: Preparation of Hard Coating Films

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Abstract

The present invention provides a hard coating film in which a first hard coating layer and a second hard coating layer are laminated on one side of a substrate film, wherein, AB<0 when the curl valuesof the first hard coating layer and the second hard coating layer are A and B, respectively. The hard coating film according to the present invention can minimize the occurrence of curling while having excellent bending resistance and scratch resistance.

Description

technical field [0001] The invention relates to a hard coating film and an image display device having the hard coating film. More particularly, the present invention relates to a hard coat film capable of minimizing the occurrence of curl while having excellent bending resistance and scratch resistance, and an image display device having the same. Background technique [0002] Hardcoat films have been used to protect the surfaces of various image displays, including liquid crystal display devices (LCD), electroluminescence (EL) display devices, plasma displays (PD), field emission displays (FED), and the like. [0003] Recently, a flexible display device capable of maintaining display performance even when bent like paper by using a flexible material such as plastic instead of a conventional non-flexible glass substrate is attracting attention as a next-generation display device. In this regard, there is a need for a hard coat film that not only has high hardness and good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/14G09F9/30B32B7/02
CPCG02B1/14B32B7/02G09F9/301C08G59/306C08G59/688C09D183/06C08G77/14B32B27/08B32B27/20B32B27/24B32B27/30B32B27/38C09D133/08C09D163/00C08K3/36C09D7/47C09D7/61C08K5/0025C09D183/04
Inventor 李升祐姜敏憼金东辉
Owner DONGWOO FINE CHEM CO LTD