Glare-proof film, glare-proof polarizing sheet and image display device
An anti-glare polarizer and anti-glare film technology, which is applied in the direction of identification devices, polarizing elements, nonlinear optics, etc., can solve the problems of insufficient anti-glare performance, whitening of the display surface, and difficulty in obtaining it, so as to prevent visible Reduced performance, high anti-glare performance, and enhanced strength
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[0105]
[0106] (A) Production of polarizing film
[0107] A polyvinyl alcohol film with an average degree of polymerization of about 2400, a degree of saponification of 99.9% by mole or more, and a thickness of 75μm is immersed in pure water at 30°C, and then immersed in iodine / potassium iodide / water at a mass ratio of 30°C. 0.02 / 2 / 100 in aqueous solution. After that, it was immersed in an aqueous solution with a mass ratio of potassium iodide / boric acid / water of 12 / 5 / 100 at 56.5°C. Next, after washing with 8°C pure water, it was dried at 65°C to obtain a polarizing film in which iodine was adsorbed and oriented on polyvinyl alcohol. Stretching is mainly performed in the steps of iodine dyeing and boric acid treatment, and the total stretching ratio is 5.3 times.
[0108] (B) Production of anti-glare film
[0109] An ultraviolet curable resin composition in which the following components were dissolved in ethyl acetate at a solid content concentration of 60% was prepared.
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Example
[0126]
[0127] The weight part of the filler (porous silica particles, simply marked as "silica" in Table 1) dispersed in the coating liquid was changed as shown in Table 1, except that the same operation as in Example 1 was performed. , Make anti-glare film and evaluate optical properties. The evaluation results of the optical properties are shown in Table 2.
Example
[0128]
[0129] Instead of porous silica particles, the filler dispersed in the coating solution was changed to spherical polystyrene particles with a weight average particle diameter of 3.0 μm (refractive index 1.59), and the added weight part and the thickness of the anti-glare layer are shown in Table 1. Except for the changes shown, the same operation as in Example 1 was carried out to produce an anti-glare film, and the optical characteristics were evaluated. The evaluation results of the optical properties are shown in Table 2.
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