Optical: systems and elements – Light interference – Produced by coating or lamina
Patent
1999-03-29
2000-05-16
Spryrou, Cassandra
Optical: systems and elements
Light interference
Produced by coating or lamina
359580, 359599, 359586, G02B 110
Patent
active
060645245
ABSTRACT:
A antiglare layer 12 having a fine uneven surface is formed directly or through other layer(s) on a transparent substrate film 11, and a layer 13 having a low refractive index, which is lower than the refractive index of the antiglare layer 12, is formed thereon. The refractive index of the antiglare layer 12 is higher than the refractive index of a layer in contact with said antiglare layer 12 on its surface remote from the layer 13 having a low refractive index. An SiO.sub.x film may be used as the layer 13 having a low refractive index. The SiO.sub.x film per se has excellent gas barrier property and antifouling property as an optical functional membrane and is an optical functional material characterized by having excellent moistureproofness, scratch resistance, adhesion to a substrate, transparency, low refractive index, dye, deterioration preventive property, and other properties. A layer 13 having a low refractive index as a surface layer is formed through other layer(s) on a transparent substrate film 11, and at least one of the other layer(s) is a hard coat layer 12 of 0.5 .mu.m or more in thickness, having a high refractive index, composed mainly of a resin. The hard coat layer 12 having a high refractive index is in direct contact with a layer 13 having a low refractive index. The refractive index of the hard coat layer 12 having a high refractive index is higher than the refractive index of a layer in contact with the hard coat layer 12 having a high refractive index on its surface remote from the layer 13 having a low refractive index. For use, the antireflection film is laminated to a polarizing plate or a liquid crystal display device.
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Katagiri Hiroomi
Nakamura Norinaga
Oka Motohiro
Ota Yurie
Suzuki Hiroko
Dai Nippon Printing Co. Ltd.
Jr. John Juba
Spryrou Cassandra
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