Anti-glare film and method of fabricating the same
An anti-glare film and a method of fabricating the same. The anti-glare film includes a transparent substrate, a photocurable resin layer stacked on one surface of the transparent substrate, and a plurality of amorphous patterns formed on a surface of the photocurable resin layer. The anti-glare film can provide excellent diffusion of light, exhibit excellent brightness without deterioration of transmittance, and provide excellent front brightness and visibility when applied to polarizing plates and display devices.
1. An anti-glare film comprising: a transparent substrate;
a curable resin layer on a surface of the transparent substrate; and
a plurality of amorphous patterns on a surface of the curable resin layer,
wherein the anti-glare film has a gloss from about 30% to about 60% in a direction of 20°, a gloss from about 35% to about 90% in a direction of 60°, and a gloss from about 85% to about 150% in a direction of 85°, as measured using a gloss meter in accordance with ASTM D-523;
wherein the plurality of amorphous patterns have a total area of about 30% to about 70% that of the anti-glare film, and the anti-glare film has an average roughness (Ra) from about 0.001 μm to about 0.03 μm.
2. The anti-glare film according to claim 1 , wherein the plurality of amorphous patterns have a plurality of protrusions formed on surfaces thereof.
3. The anti-glare film according to claim 2 , wherein the plurality of amorphous patterns having the plurality of protrusions formed thereon have an average roughness (Ra) from about 0.001 to about 0.05 μm.
4. The anti-glare film according to claim 1 , wherein each of the plurality of amorphous patterns is separated from each other, and has a maximum length (M max ) from about 100 μm to about 300 μm, and a minimum length (M min ) from about 10 μm to about 100 μm.
5. The anti-glare film according to claim 2 , wherein the plurality of protrusions have an average height from about 0.01 pm to about 0.09 pm from a surface of the amorphous patterns, and an average interval from about 1 pm to about 300 pm.
6. The anti-glare film according to claim 1 , wherein the transparent substrate has a thickness from about 50 μm to about 250 μm, and the curable resin layer has a thickness from about 3 μm to about 20 μm.
7. The anti-glare film according to claim 1 , wherein the transparent substrate comprises triacetyl cellulose (TAC), polyethylene terephthalate (PET) or polycarbonate.
8. A method of fabricating an anti-glare film, comprising:
etching a surface of an engraving roll through laser patterning to form amorphous patterns thereon; and
transferring the amorphous patterns from the surface of the engraving roll to a curable resin to form the anti-glare film having a gloss from about 30% to about 60% in a direction of 20°, a gloss from about 35% to about 90% in a direction of 60°, and a gloss from about 85% to about 150% in a direction of 85°, as measured using a gloss meter in accordance with ASTM D-523, wherein the amorphous patterns have a total area of about 30% to about 70% that of the anti-glare film, and the anti-glare film has an average roughness (Ra) from about 0.001 μm to about 0.03 μm.
9. The method according to claim 8 , further comprising:
performing sand-blasting on the surface of the engraving roll having the amorphous patterns to form recesses on the amorphous patterns.
10. The method according to claim 9 , wherein the sand-blasting is dry sand-blasting using circular particles having a diameter from about 1 μm to about 45 μm.
11. The method according to claim 9 , further comprising:
preparing an embossing roll by plating the surface of the engraving roll having the amorphous patterns and the recesses; and
transferring a pattern from a surface of the embossing roll to the curable resin.