Supercharge Your Innovation With Domain-Expert AI Agents!

Method for manufacturing polarizing plate

A polarizing plate and polarizing film technology, applied in chemical instruments and methods, optics, layered products, etc., can solve problems that affect the performance of display devices

Pending Publication Date: 2021-06-08
杉金光电(南京)有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such stresses can cause bending in thin display devices, and such bending can adversely affect the performance of the display device

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
  • Method for manufacturing polarizing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] Heat Treatment of Polymer Films

[0163] For PET (polyethylene terephthalate) polymer film (SRF film, thickness: 80 μm, manufacturer: Toyobo, product name: TA055, glass transition temperature: 80°C, in the TD direction before heat treatment Shrinkage force: about 7.53N, shrinkage force in MD direction: in the range of about 0.1N to 0.5N), water treatment process first and then heat treatment. First, a water treatment process is performed by immersing the SRF membrane in water maintained at about 20° C. to 30° C. such that the whole is immersed therein, and then maintaining the SRF membrane for about 10 seconds to 20 seconds. Subsequently, heat treatment is performed by keeping the SRF film at a temperature of about 50° C. for about 10 seconds to about 60 seconds. After the heat treatment process, the shrinkage force of the SRF film in the TD (transverse direction) direction is about 7N, and the shrinkage force in the MD direction is at a level of about 0.2N to 0.35N. ...

Embodiment 2

[0169] Heat treatment was performed by keeping the SRF membrane water-treated in the same manner as in Example 1 at a temperature of about 100° C. for about 10 seconds to about 60 seconds. After the heat treatment process, the shrinkage force of the SRF film in the TD (transverse direction) direction is around 6.6N. A polarizing plate was produced in the same manner as in Example 1 using the SRF film. The shrinkage force of the produced polarizing plate along the MD direction of the polarizing film is about 8N, and the shrinkage force along the TD direction of the polarizing film is about 8.6N. As a result of obtaining the A value of the above formula 1 for the manufactured polarizing plate, it was about 4.17 Nmm to about 5.68 Nmm. In Equation 1, the lower limit of the value range of A is obtained by applying 0.86 as a, 0.25mm (=applied LCD panel thickness (mm) / 2) as b, and approximately 9N as S PVA , applying 6.6N as S Pro , apply 0.0395mm (= pressure sensitive adhesive th...

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
contraction forceaaaaaaaaaa
contraction forceaaaaaaaaaa
contraction forceaaaaaaaaaa
Login to View More

Abstract

The present application relates to a method for manufacturing a polymer film and a polarizing plate. The present application can provide: a polymer film which can effectively satisfy the optical and mechanical durability required for a polarizing plate, and form a polarizing plate that does not cause bending when used in a display device; and a method for manufacturing a polarizing plate in which the polymer film is used. The present application can provide: a polymer film which can achieve the required optical and mechanical durability without causing bending, even in a polarizing plate that is thin and / or used in a thin display device; and a method for manufacturing a polarizing plate in which the polymer film is used.

Description

technical field [0001] This application claims priority based on Korean Patent Application No. 10-2019-0003685 filed on January 11, 2019, the disclosure of which is incorporated herein by reference in its entirety. [0002] The present application relates to a method for producing polarizing plates. Background technique [0003] Polarizers are polymer films used to control the state of light in various display devices. Generally, a polarizing plate is produced by attaching a protective film to one or both sides of a polarizing film having a polarizing function. [0004] Since the polarizing plate is exposed to various temperature and humidity conditions according to the usage environment of the display device, it requires durability. For example, a polarizing plate should stably maintain designed optical characteristics according to external environments such as temperature and humidity, and should not cause mechanical defects such as cracks. [0005] The protective film ...

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): G02B5/30G02B1/04
CPCB29C71/02G02B1/04B29C2071/022B29C35/041B29C35/049B29C35/06B32B38/0036G02B5/305G02B1/14C08J7/042C08J7/043C08J7/046C08J2367/02C08J2429/04C08J2463/04B32B37/12B32B27/08B32B7/023G02B5/30B32B2038/0056B32B2307/42B32B2307/736B32B7/12B32B2551/00G02B5/3025
Inventor 李铉洙金癸成金暎坤金兑祐金泳台朴振勇罗相炫
Owner 杉金光电(南京)有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com