Antireflection film
First Claim
1. An article having an antireflection film, the article comprising a substrate carrying an inorganic antireflection layer and, in contact with the inorganic antireflection layer and forming the outer surface of the antireflection film, an optically active polymer layer formed by curing a curable composition in situ on the inorganic antireflection layer, the polymer layer having a refractive index not greater than approximately 1.53 over the wavelength range of 400 to 700 nm and a thickness of from approximately 50 to approximately 200 nm.
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Accused Products
Abstract
An antireflection coating comprises one or more inorganic antireflection layers (typically metal oxide or silica layers) and a polymer layer cured in situ, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 to 700 nm and a thickness of from about 20 to about 200 nm. The polymer layer provides good scratch and fingerprint protection, and also enables the thicknesses of the inorganic antireflection layers to be reduced, thereby reducing the cost of the coating.
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Citations
18 Claims
- 1. An article having an antireflection film, the article comprising a substrate carrying an inorganic antireflection layer and, in contact with the inorganic antireflection layer and forming the outer surface of the antireflection film, an optically active polymer layer formed by curing a curable composition in situ on the inorganic antireflection layer, the polymer layer having a refractive index not greater than approximately 1.53 over the wavelength range of 400 to 700 nm and a thickness of from approximately 50 to approximately 200 nm.
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17. An article having an antireflection film, the article comprising a substrate carrying an inorganic antireflection layer and, in contact with the inorganic antireflection layer and forming the outer surface of the antireflection film, an optically active polymer layer formed by curing a curable composition in situ on the inorganic antireflection layer, the polymer layer having a refractive index not greater than approximately 1.53 over the wavelength range of 400 to 700 nm and a thickness of from approximately 20 to approximately 200 nm, the polymer layer comprising repeating units derived from a fluoroalkene and repeating units derived from an alkyl acrylate or methacrylate, the polymer layer having an outer portion enriched in the alkyl acrylate or methacrylate and an inner portion enriched in the fluoroalkene.
Specification