Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Optical film with high adhesiveness and polarizing plate comprising the same

An optical film, mathematical formula technology, applied in the field of optical film and polarized light including it, can solve problems such as changes in adhesion

Active Publication Date: 2018-10-23
LG CHEM LTD
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when polymethyl methacrylate is stretched and made into a film, there is a problem that the adhesiveness to the PVA element which is a polarizing plate varies with stretching conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical film with high adhesiveness and polarizing plate comprising the same
  • Optical film with high adhesiveness and polarizing plate comprising the same
  • Optical film with high adhesiveness and polarizing plate comprising the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0103] Preparation example 1: polymethyl methacrylate

[0104]1000 g of a monomer mixture comprising 98% by weight of methyl methacrylate and 2% by weight of methyl acrylate was added to a 5L reactor, and 2000 g of distilled water, 8.4 g of 5% polyvinyl alcohol solution (POVAL PVA217, manufactured by Kuraray Co. Ltd.) and 0.1 g of boric acid as a dispersing aid and dissolved. 2.5 g of n-octylmercaptan as a chain transfer agent and 1.5 g of 2,2′-azobisisobutyronitrile as a polymerization initiator were added thereto and dispersed in the water phase while stirring at 400 rpm to prepare a suspension solution. The temperature was raised to 80°C to perform polymerization for 90 minutes, and then the resultant was cooled to 30°C. The beads thus obtained were washed with distilled water, dehydrated, and then dried to prepare a polymethylmethacrylate resin. The glass transition temperature and molecular weight of the prepared resin were measured, and as a result, the glass transitio...

preparation example 2

[0105] Preparation Example 2: Polycarbonate

[0106] As the polycarbonate, a polycarbonate resin (UF 1004A, manufactured by LG Chem) having a glass transition temperature of 134° C. and a weight average molecular weight of 16,000 was used.

preparation example 3

[0107] Preparation Example 3: Primer Solution

[0108] Based on the solid content, polyester-based resin (A-645GH, Takamatsu Oil & Fat, total solid content except water: 30% by weight) and polyurethane-based resin (CK-PUD-PF, Chokwang Paint, except water Total solids content: 30% by weight) mixed in a weight ratio of 80:20. 5% by weight of aqueous silica was mixed thereinto to prepare a primer solution.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

According to the present invention, an optical film can implement a zero phase difference while using an acrylic resin which does not include a cyclic structure in a main chain and also can obtain excellent adhesion to a PVA element which is a polarizing plate. The optical film includes a base layer and a primer layer formed on the base layer. The base layer includes the acrylic resin and polycarbonate.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No. 10-2016-0120104 filed with the Korean Intellectual Property Office on September 20, 2016 and Korean Patent Application No. 10-2017-0119830 filed with the Korean Intellectual Property Office on September 18, 2017 Priority and benefit of , the disclosure of which is incorporated herein by reference in its entirety. [0003] The present invention relates to an optical film having high adhesiveness and a polarizing plate including the same. Background technique [0004] Liquid crystal displays use polarized light. For this, polarizers are used, and usually PVA elements are used. However, polarizing plates such as PVA elements themselves have weak mechanical properties and are easily affected by external environments such as temperature or humidity. Therefore, a protective film for protecting a polarizing plate is required. [0005] Such a protectiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02B1/04G02B1/14B29C55/06B32B37/12
CPCG02B1/04G02B5/3033G02B1/048G02B1/14B29C55/065B32B37/12B32B7/00B32B27/00G02B5/3083G02B5/3025
Inventor 郭相旻姜声旭金东完郑吉安李基中朴珉洙朴锺声
Owner LG CHEM LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com