Heat strengthened coated glass article and method for making same
First Claim
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1. A method of forming a heat strengthened, electrically conductive coated glass article comprising:
- a) providing a glass substrate;
b) depositing a barrier layer on said glass substrate;
c) depositing a substantially undoped metal oxide coating on said barrier layer, said substantially undoped metal oxide coating being distinct from said barrier layer;
d) depositing a doped metal oxide coating directly on said substantially undoped metal oxide coating, wherein the source metal from which the oxides of the substantially undoped and doped coatings are derived is the same;
e) heating said coated glass article to within a specified temperature range; and
f) cooling said coated glass article to ambient temperature in a controlled manner.
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Abstract
A coated glass article which may be heat strengthened with reduced variability in sheet resistance is disclosed. A multi-layer coating is formed on a glass substrate including a base layer of a substantially undoped metal oxide applied over the substrate, and an electrically conductive layer of a doped metal oxide applied directly on the base layer. The same source metal is used for the two layers.
28 Citations
6 Claims
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1. A method of forming a heat strengthened, electrically conductive coated glass article comprising:
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a) providing a glass substrate;
b) depositing a barrier layer on said glass substrate;
c) depositing a substantially undoped metal oxide coating on said barrier layer, said substantially undoped metal oxide coating being distinct from said barrier layer;
d) depositing a doped metal oxide coating directly on said substantially undoped metal oxide coating, wherein the source metal from which the oxides of the substantially undoped and doped coatings are derived is the same;
e) heating said coated glass article to within a specified temperature range; and
f) cooling said coated glass article to ambient temperature in a controlled manner. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification