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Polarizing plate and optical display apparatus comprising the same

A polarizing plate and polarizer technology, applied in optics, optical components, nonlinear optics, etc., can solve problems affecting the polarizing function of the polarizing plate, and achieve the effect of minimizing penetration

Pending Publication Date: 2022-02-22
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the silver ions or the resulting silver crystals infiltrated between the polarizer and the protective film will affect the light passing through the polarizer, thereby affecting the polarizing function of the polarizer

Method used

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  • Polarizing plate and optical display apparatus comprising the same
  • Polarizing plate and optical display apparatus comprising the same
  • Polarizing plate and optical display apparatus comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] A polyvinyl alcohol film (VF-TS#2000, hydrophobic polyvinyl alcohol resin, thickness: 20 μm, Kuraray Co., Ltd.) washed with water at 25°C was subjected to swelling treatment in a water swelling bath at 30°C.

[0120] After the swelling treatment, the film was immersed in a dye bath containing an aqueous solution containing 1 mol / ml potassium iodide and 1 wt% boric acid at 30°C for 65 seconds. Thereafter, the membrane was immersed in a crosslinking bath containing an aqueous solution containing 2.5 wt% boric acid at 30°C for 30 seconds.

[0121] After the crosslinking treatment, the film was stretched at 55°C in a stretching bath containing an aqueous solution containing 2.5 wt% boric acid.

[0122] The polyvinyl alcohol film is stretched to a total elongation of 5.0 times its original length or more through washing treatment, swelling treatment, dyeing treatment, crosslinking treatment and stretching treatment. Then, the film was immersed for 10 seconds at 20° C. in a ...

Embodiment 2 to 4

[0127] Except as listed in Table 1, change the content in each dyeing bath, crosslinking bath and stretching bath and the concentration of boric acid in the stretching bath, stretching temperature and / or drying temperature, in the same manner as Example 1 Manufacture of polarizers and polarizing plates.

Embodiment 5

[0129] A photocurable adhesive comprising: (meth)acrylic compounds including hydroxyl-containing (meth)acrylates, epoxy compounds including cycloaliphatic epoxy resins, cationic photopolymers including onium salts was prepared. initiators, and phosphorous-based photoradical initiators. A polarizing plate was manufactured in the same manner as in Example 1 except that the prepared photocurable adhesive was used instead of the water-based adhesive (the thickness of each adhesive layer was 2 μm to 3 μm).

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Abstract

A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes a polarizer and a protective film stacked on at least one surface of the polarizer, and the polarizer includes a hydrophobic polyvinyl alcohol resin, the polarizer has a surface roughness (Ra) of about 10 nm or less on a surface thereof facing the protective film, and the polarizing plate has a maximum metal ion-infiltration length of about 400 [mu]m or less between the polarizer and the protective film when metal powder-containing pastes are deposited on a surface of the polarizing plate in a thickness direction thereof and left at 60 DEG C. and 95% relative humidity (RH) for 240 hours.

Description

[0001] Citations to related applications [0002] This application claims the benefit of Korean Patent Application No. 10-2020-0099645 filed with the Korean Intellectual Property Office on Aug. 10, 2020, the entire disclosure of which is incorporated herein by reference. technical field [0003] The invention relates to a polarizing plate (polarizing plate, polarizing plate, polarizing plate) and an optical display device comprising the same. More particularly, the present invention relates to a polarizing plate, when a paste (paste, paste, paste, paste) containing metal powder is deposited on the polarizing plate in the thickness direction and heated at a high temperature and / or at a high temperature / high When placed under humidity conditions, the polarizing plate can minimize the permeation of metal ions between the polarizer and the protective film, and relates to an optical display device comprising the polarizing plate. Background technique [0004] A liquid crystal di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02B1/14
CPCG02B5/305G02B1/14G02B5/3033G02F1/133528G02F1/136204B32B7/12B32B2457/20B32B27/308B32B27/306B32B23/20B32B27/08B32B27/365B32B2255/10B32B2457/202B32B27/36B32B2255/205B32B23/08B32B2307/732B32B27/325B32B2457/206B32B27/304B32B27/32G02B1/04B32B7/023H10K59/50G02B5/3025B32B2307/73B32B2250/02B32B2250/24B32B2307/42
Inventor 金道元姜汉赛申光浩曹成万赵恩率黄善五
Owner SAMSUNG SDI CO LTD
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