Coated article having a protective coating containing silicon nitride and/or silicon oxynitride

1. A coated article comprising:

a substrate;

a first functional layer, the first function layer comprising:

a metallic layer over at least a portion of the substrate, wherein the metallic layer comprises a silver layer over at least a portion of the substrate; and

a primer layer directly over at least a portion of the silver metallic layer, wherein the primer layer comprises titanium, alloys of titanium and aluminum, or combinations thereof;

a metal oxide layer directly over at least a portion of the primer layer of the first functional layer, wherein the metal oxide layer comprises zinc stannate;

a metal oxynitride gradient layer directly over at least a portion of the metal oxide layer, wherein the metal oxynitride gradient layer comprises silicon and has a thickness ranging from 280 Å to 330 Å; and

a protective layer directly over at least a portion of the metal oxynitride layer, wherein the protective layer comprises Ti, TiAl, TiO 2 , TiAlO, or a combination thereof.

2. The coated article of claim 1 , wherein the first functional layer further comprises a zinc stannate layer in direct contact with the substrate.

3. The coated article of claim 1 , wherein the first functional layer further comprises a dielectric layer directly over at least a portion the substrate, and wherein the silver layer is directly over at least a portion of the dielectric layer.

4. The coated article of claim 3 , wherein the dielectric layer comprises one or more layers comprising zinc oxide or zinc stannate.

5. The coated article of claim 1 , wherein at least a portion of the primer layer is oxidized after the primer layer is deposited over the silver layer.

6. The coated article of claim 1 , further comprising a second functional layer beneath at least a portion of the first functional layer and over at least a portion of the substrate.

7. The coated article of claim 1 , wherein the metallic layer has a thickness ranging from 50 Å to 200 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the metal oxide layer has a thickness ranging from 20 Å to 100 Å, and the protective layer has a thickness ranging from 100 Å to 400 Å.

8. The coated article of claim 1 , wherein the metallic layer has a thickness ranging from 60 Å to 80 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the metal oxide layer has a thickness ranging from 30 Å to 60 Å, and the protective layer has a thickness ranging from 270 Å to 330 Å.

9. A coated article comprising:

a glass substrate;

a zinc stannate layer directly over at least a portion of the glass substrate;

a zinc oxide layer directly over at least a portion of the zinc stannate layer;

a silver layer directly over at least a portion of the zinc oxide layer;

a primer layer directly over at least a portion of the silver layer, wherein the primer layer comprises titanium, alloys of titanium and aluminum, or combinations thereof;

a metal oxide layer directly over at least a portion of the primer layer, wherein the metal oxide layer comprises at least one layer of zinc oxide or at least one layer of zinc stannate;

a metal nitride layer directly over at least a portion of the metal oxide layer, wherein the metal nitride layer comprises silicon and has a thickness ranging from 280 Å to 330 Å; and

a protective layer directly over at least a portion of the metal nitride layer, wherein the protective layer comprises Ti, TiAl, TiO 2 , TiAlO, or a combination thereof.

10. The coated article of claim 9 , wherein the metal oxide layer comprises at least two sub-layers, the two sub-layers being formed from one sub-layer each of zinc oxide and zinc stannate.

11. The coated article of claim 10 , wherein the zinc stannate layer has a thickness ranging from 270 Å to 330 Å, the zinc oxide layer has a thickness ranging from 70 Å to 90 Å, the silver layer has a thickness ranging from 60 Å to 80 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the sub-layer of zinc oxide has a thickness ranging from 30 Å to 60 Å, the sub-layer of zinc stannate has a thickness ranging from 30 Å to 60 Å, and the protective layer has a thickness ranging from 270 Å to 330 Å.

12. The coated article of claim 9 , wherein the zinc stannate layer has a thickness ranging from 250 Å to 400 Å, the zinc oxide layer has a thickness ranging from 70 Å to 100 Å, the silver layer has a thickness ranging from 50 Å to 200 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the metal oxide layer has a thickness ranging from 40 Å to 200 Å, and the protective layer has a thickness ranging from 250 Å to 400 Å.

13. The coated article of claim 9 , wherein the zinc stannate layer has a thickness ranging from 270 Å to 330 Å, the zinc oxide layer has a thickness ranging from 70 Å to 90 Å, the silver layer has a thickness ranging from 60 Å to 80 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the metal oxide layer has a thickness ranging from 60 Å to 120 Å, and the protective layer has a thickness ranging from 270 Å to 330 Å.

14. A coated article comprising:

a glass substrate;

a zinc stannate layer directly over at least a portion of the glass substrate, wherein the zinc stannate layer has a thickness ranging from 250 Å to 400 Å;

a zinc oxide layer directly over at least a portion of the zinc stannate layer, wherein the zinc oxide layer has a thickness ranging from 70 Å to 100 Å;

a silver layer directly over at least a portion of the of zinc oxide layer, wherein the silver layer has a thickness ranging from 50 Å to 200 Å;

a primer layer directly over at least a portion of the silver layer, wherein the primer layer has a thickness ranging from 10 Å to 30 Å, and wherein the primer layer comprises Ti, TiAl, or an oxide or suboxide of TiAl;

a metal oxide layer directly over at least a portion of the primer layer, wherein the metal oxide layer has a thickness ranging from 20 Å to 100 Å, and wherein the metal oxide layer comprises at least a layer of zinc stannate;

a metal oxynitride layer directly over at least a portion of the metal oxide layer, wherein the metal oxynitride layer has a thickness ranging from 280 Å to 330 Å, and wherein the metal oxynitride layer comprises silicon oxynitride; and

a protective layer directly over the metal oxynitride layer, wherein the protective layer has a thickness ranging from 100 Å to 800 Å, and wherein the protective layer comprises Ti, TiAl, TiO 2 , TiAlO, SiN, or a combination thereof.

15. The coated article of claim 14 , wherein the coated article is a first ply in an automotive glass article, wherein the first ply has a number 3 surface and where a functional coating is positioned on the number 3 surface, and wherein the automotive glass article further comprises a second ply over the number 3 surface of the first ply.

16. The coated article of claim 14 , wherein the protective layer further comprises a silicon nitride layer directly over the metal oxynitride layer, wherein the silicon nitride layer has a thickness ranging from 150 Å to 400 Å, and a TiAlO layer directly over the silicon nitride layer, wherein the TiAlO layer has a thickness ranging from 100 Å to 400 Å.

17. The coated article of claim 14 , wherein the protective layer further comprises a silicon nitride layer directly over the metal oxynitride layer, wherein the silicon nitride layer has a thickness ranging from 200 Å to 250 Å, and a TiAlO layer directly over the silicon nitride layer, wherein the TiAlO layer has a thickness ranging from 270 Å to 330 Å.

18. The coated article of claim 14 , wherein the zinc stannate layer has a thickness ranging from 270 Å to 330 Å, the zinc oxide layer has a thickness ranging from 70 Å to 90 Å, the silver layer has a thickness ranging from 60 Å to 80 Å, the a primer layer has a thickness ranging from 10 Å to 30 Å, the metal oxide layer has a thickness ranging from 30 Å to 60 Å, and the protective layer has a thickness ranging from 200 Å to 580 Å.

19. The coated article of claim 18 , wherein the protective layer further comprises a silicon nitride layer directly over the metal oxynitride layer, wherein the silicon nitride layer has a thickness ranging from 200 Å to 250 Å, and a TiAlO layer directly over the silicon nitride layer, wherein the TiAlO layer has a thickness ranging from 270 Å to 330 Å.