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Light deflection panel

A technology of polarizing plates and polarizers, applied in the field of polarizing plates, can solve problems such as insufficient adhesion of polarizers, achieve optical performance or shape stability, prevent optical performance from deteriorating, and improve heat resistance

Active Publication Date: 2008-06-11
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, most hydrophobic acrylic resins do not have sufficient adhesion to polarizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-16 and comparative example 1、2

[0110] (1) Production of polarizers

[0111] The degree of saponification is 99.5% mol polyvinyl alcohol film (75 μm thick) soaked in pure water, fully swollen, then at 35 ℃, in iodine staining solution (iodine / potassium iodide / boric acid / pure water=0.2g / 30g / 30g / 1L) for 4 minutes for dyeing. The dyed polyvinyl alcohol film was uniaxially stretched to 5 times or more in a stretching solution (potassium iodide / boric acid / pure water=30 g / 30 g / 1 L). Soak the stretched polyvinyl alcohol film in a solution for fixation (potassium iodide / boric acid / pure water=40g / 40g / 1L) at 40°C for 3 minutes to fix iodine in the film of polyvinyl alcohol, and then remove it from the solution for fixation. Take it out, and dry it in a drying oven (65° C., 5 minutes) to prepare a polarizer.

[0112] (2) Formation of protective film

[0113] As shown in Table 1, using 3% boric acid water, at 60°C, stir the silane coupling agent with the corresponding amount of water for 6 hours to hydrolyze, mix an...

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Abstract

A polarization plate that realizes high adhesion between polarizer and protective film, ensuring stable optical performance of the polarizer against influences from moisture, etc. There is provided polarization plate (4,12) comprising polarizer (2,10) and, superimposed on at least one major surface thereof, protective film (3,11) produced by hardening of an energy radiation hardenable composition, wherein the energy radiation hardenable composition contains: (1) energy radiation polymerizable compound having a bridged hydrocarbon group, a bisphenol group, a neopentyl glycol group, a trimethylolpropane group or a pentaerythritol group, and (2) hydrolyzate of a silane coupling agent. Liquid crystal display device (9) is built by superimposing this polarization plate (4,12) on at least one major surface of liquid crystal panel (1).

Description

technical field [0001] The present invention relates to polarizing plates. Background technique [0002] Polarizing plates are used in optical elements such as liquid crystal display elements, organic EL display elements, and eyeglasses. In the past, the above-mentioned polarizing plate usually uses a uniaxially stretched film of polyvinyl alcohol resin dyed with iodine as a polarizer, and in order to improve its strength, water resistance, moisture resistance, etc., a protective film is attached to both sides of the polarizer with an adhesive . [0003] Here, a cellulose acetate-based resin film (TAC film) excellent in optical transparency is used for the protective film, and a hydrophilic material is used for the binder considering that both the polarizer and the protective film are hydrophilic. [0004] However, in the above-mentioned polarizing plate, performance degradation under high temperature and high humidity is likely to occur. This is considered to be due to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335
CPCG02F1/133528G02B5/3025G02F2201/50G02B1/105G02B1/14C09K2323/031
Inventor 关香织里赤松正施泽民
Owner DEXERIALS CORP
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