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Optical laminate, polarizing plate, and display apparatus using the same

A technology of optical laminates and optical functional layers, applied in the direction of optics, optical elements, polarizing elements, etc., can solve the problems of poor light resistance and inability to maintain antistatic performance, and achieve excellent scratch resistance, scratch resistance and elongation The effect of improving the rate and softness and excellent saponification resistance

Active Publication Date: 2015-05-20
TOMOEGAWA PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the light resistance of organic-based conductive materials is inferior to that of inorganic-based materials, antistatic properties cannot be maintained, and improvements have been demanded

Method used

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  • Optical laminate, polarizing plate, and display apparatus using the same
  • Optical laminate, polarizing plate, and display apparatus using the same
  • Optical laminate, polarizing plate, and display apparatus using the same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0225] (Manufacture example 1) Manufacture of synthetic smectite

[0226] Add 4L of water to a 10L beaker to dissolve No. 3 water glass (SiO 2 28%, Na 2 O 9%, molar ratio 3.22) 860g, while stirring, add 95% sulfuric acid 162g in one go, obtain silicate solution. Next, dissolve MgCl in 1 L of water 2 ·6H 2 O superior grade pure reagent (purity 98%) 560g, it is added in the aforementioned silicic acid solution and is prepared into homogeneous mixed solution. This was added dropwise to 3.6 L of 2N-NaOH solution over 5 minutes while stirring. The resulting reaction precipitate was immediately filtered with a cross-flow filtration system [cross-flow filter (ceramic membrane filter: pore size 2 μm, tube type, filtration area 400 cm] manufactured by Nippon Barriers Co., Ltd. 2 ), pressurization: 2kg / cm 2 , filter cloth: Tito wheel 1310] After filtering and fully washing, add 200ml of water and 14.5g of Li(OH)·H 2 The solution composed of O was made into a slurry. Move it int...

manufacture example 2

[0227] (Production Example 2) Production of Synthetic Smectite-Based Layered Organoclay A

[0228] 20 g of the synthetic smectite synthesized in Production Example 1 was dispersed in 1000 ml of tap water to prepare a suspension. Be dissolved with the aqueous solution 500ml of the quaternary ammonium salt (98% content product) of the following formula (II) that is equivalent to 1.00 times of the cation exchange capacity of this synthetic smectite, add in the aforementioned synthetic smectite suspension, The reaction was carried out at room temperature for 2 hours while stirring. The product was subjected to solid-liquid separation, washed to remove byproduct salts, and then dried to obtain a synthetic smectite-based layered organoclay A.

[0229] [chemical formula 17]

[0230]

manufacture example 3

[0231] (Production Example 3) Synthesis of ionizing radiation-curable fluorinated acrylate B liquid

[0232]In a 500 ml reaction flask, 22.2 g (0.1 mole) of isophorone diisocyanate was added dropwise to 100 ml of MIBK (methyl isobutyl ketone) solution while gas bubbling at 25°C. Pentaerythritol triacrylate 59.6 g (0.20 mol) of MIBK 50ml solution. After completion of the dropwise addition, 0.3 g of dibutyltin dilaurate was added, followed by heating and stirring at 70° C. for 4 hours. After the reaction, the reaction solution was washed with 100 ml of 5% hydrochloric acid. After separating and collecting the organic layer, the solvent was distilled off under reduced pressure at 40° C. or lower to obtain 80.5 g of urethane acrylate as a colorless transparent viscous liquid. 40.8 g (0.05 mol) of the prepared urethane acrylate, 71.9 g (0.15 mol) of perfluorooctyl ethyl mercaptan, and 60 g of MIBK were put into a 200 ml reaction flask and homogenized. 1.0 g of triethylamine was ...

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Abstract

The present invention provides an optical laminate which has excellent antistatic performance, high saponification resistance and excellent scratch resistance just through a one-layer structure. The invention also provides a polarizing plate and a display device with the same. The optical laminate of the invention is characterized in that: a light-penetrable substrate is at least provided with an optical functional layer directly or through a mode of being spaced by other layer; the optical functional layer at least comprises a conductive material; the surface resistivity at the surface of the optical laminate after carbon arc type light fastness test is less than 1.0*10<12>omega / square millimeter in a length of one meter; and furthermore, the surface resistivity ratio between the surface resistivity before the carbon arc type light fastness test and that after the carbon arc type light fastness test, namely R2 / R1 is less than 10<4>, wherein, R1 is the surface resistivity before the carbon arc type light fastness test, and R2 is the surface resistivity after the carbon arc type light fastness test.

Description

technical field [0001] The present invention relates to an optical laminate, a polarizing plate, and a display device using the same. Background technique [0002] For image display devices such as liquid crystal display (LCD), Brown tube (CRT) display, projection display, plasma display (PDP), electroluminescent display, etc., on the surface of the display device, due to indoor lighting such as fluorescent lamps, sunlight, etc. The visibility of the image is hindered by the incident from the window, the reflection of the operator's shadow, etc. In addition, it is required to impart scratch resistance to the image display surface in order to prevent scratches during handling. Therefore, on the surface of these displays, in order to improve the visibility of the image, an optical laminate having an optical function layer such as an anti-glare layer and a hard coat layer formed with a fine uneven structure is provided on the outermost surface. The structure can diffuse the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/16G02B5/30G02F1/1335B32B17/10B32B27/08
CPCB32B7/02G02B1/11G02B5/30
Inventor 大石和也村田力桑原将臣森内英辉芹泽直树川西崇之中西隆之
Owner TOMOEGAWA PAPER CO LTD
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