Transparent, electroconductive substrate and method for forming the same
First Claim
1. A method for forming a transparent, electroconductive substrate, in which a transparent, electroconductive ink, which is a solution having dispersed therein indium-tin oxide particles having a mean particle size of from 0.01 to 0.05 μ
- m and a binder, is coated and dried on a support capable of transmitting visible rays therethrough to thereby form thereon a transparent, electroconductive film consisting solely of said indium-tin oxide particles, and thereafter an overcoating sol solution consisting essentially of silica sol is coated on said transparent electroconductive film and then dried or dried and baked.
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Accused Products
Abstract
A transparent, electroconductive ink having therein ultra-fine ITO particles dispersed in a solvent or in a solvent containing a resin dissolved therein is coated and dried on a transparent support, then dried and optionally baked, and thereafter an overcoating liquid consisting essentially of silica sol is coated over the resulting transparent, electroconductive film formed on the support. This is then dried and optionally baked to obtain a transparent, electroconductive substrate having a specific resistance of 0.01 to 0.5 Ω.cm, a haze value of 0 to 2%, and a volume content of the ultra-fine ITO particles in the film of being 40 to 75%. The substrate has a small surface resistivity and has excellent optical characteristics and weather resistance.
30 Citations
13 Claims
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1. A method for forming a transparent, electroconductive substrate, in which a transparent, electroconductive ink, which is a solution having dispersed therein indium-tin oxide particles having a mean particle size of from 0.01 to 0.05 μ
- m and a binder, is coated and dried on a support capable of transmitting visible rays therethrough to thereby form thereon a transparent, electroconductive film consisting solely of said indium-tin oxide particles, and thereafter an overcoating sol solution consisting essentially of silica sol is coated on said transparent electroconductive film and then dried or dried and baked.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for forming a transparent, electroconductive substrate, in which a transparent, electroconductive ink, which is a solvent having dispersed therein indium-tin oxide particles having a mean particle size of from 0.01 to 0.05 μ
- m and is coated on a transparent support capable of transmitting visible rays therethrough and then dried and baked to thereby form transparent, electroconductive film on the support, and thereafter an overcoating sol solution consisting essentially of a silica sol is coated on said transparent, electroconductive film and then dried or dried and baked.
- View Dependent Claims (9, 10, 11, 12, 13)
Specification