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US 6,621,634 B2Granted
Antireflection filter for display device
AssigneeSony Corporation
InventorsHideaki Hanaoka, Hirofumi Kondo
Life of this patent
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Abstract
A display device antireflection filter 100 formed on a glass base material is comprised of an antireflection layer 102 of at least one layer containing SiO2 and a material layer 103 made of composition produced by adding compound whose interaction with SiO2 is small to compound having alkoxysilane group at terminal and which has perfluoropolyether group. This device exhibits improved wear and abrasion resistance.
Claims9
An antireflection filter for display device formed on a glass base material, said antireflection filter for display device comprising:
- at least one antireflection layer containing SiO2;
- and
- a material layer on the antireflection layer, the material layer being made of a composition produced by adding a compound having a small interaction with said SiO2 to a compound having an alkoxysilane group at a terminal and a perfluoropolyether group, the compound having an alkoxysilane group at terminal and a perfluoropolyether group being expressed by the following formula:
- RfCOR1—R2—Si(OR3)3,
- wherein
- Rf represents the perfluoropolyether group,
- R1 represents any one of O, NH, S,
- R2 represents an alkylene chain, and
- R3 represents an alkyl group, and
- wherein the compound whose interaction with SiO2 is small is a compound that affects a ratio of an amount of the material layer remaining on the antireflection layer to an amount of the material layer removed from the antireflection layer of less than 50% when the material layer is wiped about 20 times by an absorbent cotton containing ethanol under a pressure of 1 kg/m2.
7 more elements
Dependencies are inferred from the claim text.