Transparencies
First Claim
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1. A transparency comprising a transparent substrate having an electrically conductive de-misting and/or de-icing metal film thereon and electrical supply contacts connected to said metal film for conducting electricity therethrough, with the optional inclusion of a transparent resin layer between said substrate and said electrically conductive metal layer;
- and a sputtered layer containing an oxide of indium is provided on said electrically conducting metal film, wherein the thickness of said metal film varies over the surface of the transparency so that the power dissipation of said metal film is uniform over the area of the substrate.
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Accused Products
Abstract
A transparency such as an aircraft front window has an electrically conductive metal, e.g. gold, film vacuum deposited thereon for demisting and/or defrosting purposes. To increase the reliability of such metal film, a layer of an oxide of indium, e.g. indium tin oxide, is formed on the metal film by a sputtering operation to a typical thickness of 10 to 200 nm.
30 Citations
10 Claims
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1. A transparency comprising a transparent substrate having an electrically conductive de-misting and/or de-icing metal film thereon and electrical supply contacts connected to said metal film for conducting electricity therethrough, with the optional inclusion of a transparent resin layer between said substrate and said electrically conductive metal layer;
- and a sputtered layer containing an oxide of indium is provided on said electrically conducting metal film, wherein the thickness of said metal film varies over the surface of the transparency so that the power dissipation of said metal film is uniform over the area of the substrate.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification