EP0304234A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Glass coated with metal oxide films having barrier properties
Assignee: BOC TECHNOLOGIES Ltd
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Filing: 1988-08-11
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Granted: —
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Expires: 2008-08-11
Abstract
Abstract A layer of silver metal or the like, included as one of a plurality of transparent coating layers upon a glass pane, is protected from staining by providing the pane with a barrier layer comprising the oxides of at least two metals of which one is Me(1) and another is Me(2) wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth. The barrier layer is non-transmissive of moisture and other staining agents, is amorphous and is free of grain boundaries.
Inventors
- 👤 Roger D. O'shaughnessy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:22
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3618; C03C17/3644; C03C17/3681
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
101 words
A glass pane having transparent coating comprising a metal layer susceptible to staining in the presence of moisture and a staining agent, and a separate barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer (i) being substantially amorphous and substantially free of grain boundaries, (ii) being substantially non-transmissive of moisture and staining agents and (iii) including oxides of at least two metals of which one is an oxide of Me(1) and another is an oxide of Me(2) wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth.
Claim 2
Dependent Claim
101 words
A glass pane having transparent coating comprising a metal layer susceptible to staining in the presence of moisture and a staining agent, and a separate barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer (i) being substantially amorphous and substantially free of grain boundaries, (ii) being substantially non-transmissive of moisture and staining agents and (iii) including oxides of at least two metals of which one is an oxide of Me(1) and another is an oxide of Me(2) wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth.
Claim 3
Dependent Claim
26 words
A glass pane according to claim 1 including, as a separate layer spaced further from the glass surface than the barrier layer, an oxide of Me(2).
Claim 4
Dependent Claim
17 words
A glass pane according to claim 2 wherein said separate layer is contiguous to the barrier layer.
Claim 5
Dependent Claim
27 words
A glass pane according to any one of the preceding claims in which Me(2) is zinc or a blend of zinc and tin and Me(1) is titanium.
Claim 6
Dependent Claim
17 words
A glass pane according to claim 1 in which the metal layer susceptible to staining is silver.
Claim 7
Dependent Claim
31 words
A glass pane according to claim 1 wherein the ratio of the apparent thickness of the Me(1) oxide to the total apparent thickness of the barrier layer is at least 1/3.
Claim 8
Dependent Claim
21 words
A glass pane according to claim 1 in which the apparent thickness of the barrier layer is at least 115 Angstroms.
Claim 9
Dependent Claim
19 words
A glass pane according to any one of the preceding claims including an outermost, separate layer of zinc oxide.
Claim 10
Dependent Claim
45 words
A coated glass pane according to any one of the preceding claims wherein the ratio of the apparent thickness of titanium dioxide in the barrier layer is not less than 0.39, and the apparent thickness of the barrier layer is not less than 115 Angstroms.
Claim 11
Independent Claim
90 words
A method for protecting from corrosion a stain-susceptible metal layer carried as one of a plurality of transparent layers upon a glass pane surface, comprising depositing a separate, substantially amorphous and grain boundary-free barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer being non-transmissive of moisture or staining agents and including oxides of at least two metals of which one is Me(1) and another is Me(2) wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth.
Claim 12
Independent Claim
90 words
A method for protecting from corrosion a stain-susceptible metal layer carried as one of a plurality of transparent layers upon a glass pane surface, comprising depositing a separate, substantially amorphous and grain boundary-free barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer being non-transmissive of moisture or staining agents and including oxides of at least two metals of which one is Me(1) and another is Me(2) wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth.
Claim 13
Dependent Claim
24 words
A method according to claim 10 including the step of depositing on the barrier layer an outer, separate layer of an oxide of Me(2).
Claim 14
Independent Claim
96 words
A method for protecting from corrosion a stain-susceptible metal layer carried as one of a plurality of transparent layers upon a glass pane surface, comprising depositing metal oxides of the metals Me(1) and Me(2) via sputtering in an oxygen-containing atmosphere from separate Me(1) and Me(2) targets to form a substantially amorphous barrier layer substantially free of grain boundaries, wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth, the barrier layer being non-transmissive of moisture or staining agents, and being positioned further from the glass surface than the stain-susceptible metal layer.
Claim 15
Independent Claim
96 words
A method for protecting from corrosion a stain-susceptible metal layer carried as one of a plurality of transparent layers upon a glass pane surface, comprising depositing metal oxides of the metals Me(1) and Me(2) via sputtering in an oxygen-containing atmosphere from separate Me(1) and Me(2) targets to form a substantially amorphous barrier layer substantially free of grain boundaries, wherein Me(1) is titanium, zirconium or hafnium and Me(2) is zinc, tin, indium or bismuth, the barrier layer being non-transmissive of moisture or staining agents, and being positioned further from the glass surface than the stain-susceptible metal layer.
Claim 16
Independent Claim
98 words
A method for protecting a stain-susceptible metal layer carried as one of a plurality of transparent layers upon the surface of a glass pane comprising the sequential steps, taken in any sequence, of depositing an oxide of the metal Me(1) via sputtering in the presence of oxygen, and depositing an oxide of the metal Me(2) via sputtering in the presence of oxygen, to form a generally homogeneous, separate, substantially amorphous and grain boundary-free barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer being non-transmissive of moisture or staining agents.
Claim 17
Independent Claim
98 words
A method for protecting a stain-susceptible metal layer carried as one of a plurality of transparent layers upon the surface of a glass pane comprising the sequential steps, taken in any sequence, of depositing an oxide of the metal Me(1) via sputtering in the presence of oxygen, and depositing an oxide of the metal Me(2) via sputtering in the presence of oxygen, to form a generally homogeneous, separate, substantially amorphous and grain boundary-free barrier layer spaced further from the surface of the glass pane than the metal layer, the barrier layer being non-transmissive of moisture or staining agents.
Claim 18
Dependent Claim
36 words
A method according to claim 13, including the sequential steps of cleaning the glass pane surface, and sputter coating the glass pane surface sequentially with zinc oxide, silver metal, titanium metal, zinc oxide and titanium dioxide.
Claim 19
Dependent Claim
26 words
The method according to claim 14 including the subsequent step of sputter coating the coated glass with zinc oxide to form a separate, outermost, protective layer.
References Cited (Backward Citations)
No citation records indexed.
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