High refractive index layer, production process of curable coating composition, antireflection film, polarizing plate and image display device using thereof
First Claim
1. A high refractive index layer comprising a matrix and fine particles of a high refractive index composite oxide, wherein the fine particles of a high refractive index composite oxide are fine particles of a composite oxide containing:
- a titanium element; and
at least one metal element, in which the oxide of the at least one metal element has a refractive index of 1.95 or more, and the composite oxide is doped with at least one metal ion selected from the group consisting of Co ion, Zr ion and Al ion.
4 Assignments
0 Petitions
Accused Products
Abstract
A high refractive index layer excellent in weatherability or optical properties and durability, an antireflection film having the layer, a polarizing plate having the antireflection film, and an image display device using thereof are provided, each of which is a high refractive index layer or film which contains specific fine particles of a high refractive index composite oxide containing a titanium element or a bismuth element; a production process of a curable coating composition which contains specific fine particles of a high refractive index composite oxide containing a bismuth element; an antireflection film using thereof; a polarizing plate and an image display device using thereof.
10 Citations
29 Claims
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1. A high refractive index layer comprising a matrix and fine particles of a high refractive index composite oxide,
wherein the fine particles of a high refractive index composite oxide are fine particles of a composite oxide containing: - a titanium element; and
at least one metal element, in which the oxide of the at least one metal element has a refractive index of 1.95 or more, andthe composite oxide is doped with at least one metal ion selected from the group consisting of Co ion, Zr ion and Al ion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 27, 28, 29)
- a titanium element; and
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14. A process for producing a curable coating composition comprising a film-forming curable compound and fine particles of a high refractive index composite oxide, in which the fine particles of a high refractive index composite oxide contains:
- a bismuth element; and
at least one metal element, in which the oxides of the at least one metal element has a refractive index of 1.95 or more,wherein the process comprises wet-dispersing particles of the high refractive index composite oxide and a dispersing agent using media having an average particle size of less than 1 mm to thereby produce fine particles of high refractive index composite oxide having an average particle size of 150 nm or less. - View Dependent Claims (15, 16, 17, 18)
- a bismuth element; and
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19. A cured film which has a refractive index of 1.85 to 2.5 and is formed from a curable coating composition containing a film-forming curable compound and fine particles of a high refractive index composite oxide having an average particle size of 100 nm or less, the fine particles of a high refractive index composite oxide containing:
- a bismuth element; and
at least one metal element, in which the oxide of the at least one metal element has a refractive index of 1.95 or more. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
- a bismuth element; and
Specification