Claims
- 1. A heat treated coated article comprising:
a multi-layer coating supported by a glass substrate, wherein the coating comprises at least one layer comprising silver; and wherein the coated article has a ratio Tvis/Rs of at least 30 after heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square) and a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 8 due to the heat treatment.
- 2. The coated article of claim 1, wherein the coated article has a ratio Tvis/Rs of at least 32 after heat treatment.
- 3. The coated article of claim 1, wherein the coated article has a ratio Tvis/Rs of at least 34 after heat treatment.
- 4. The coated article of claim 1, wherein the coated article has a ratio Tvis/Rs of at least 36 after heat treatment.
- 5. The coated article of claim 1, wherein the coated article has a visible transmission of at least 65%, measured monolithically, after heat treatment.
- 6. The coated article of claim 1, wherein the coated article has a sheet resistance (Rs) of less than or equal to 4.0 after heat treatment.
- 7. The coated article of claim 1, wherein the coated article has a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 5 due to the heat treatment.
- 8. The coated article of claim 1, wherein the coated article has a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 4 due to the heat treatment.
- 9. The coated article of claim 1, wherein the coated article has a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 4 due to the heat treatment.
- 10. The coated article of claim 1, wherein the coated article has a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 3 due to the heat treatment.
- 11. The coated article of claim 1, wherein the coated article has a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 2.5 due to the heat treatment.
- 12. The coated article of claim 1, wherein a layer comprising zinc oxide is located between and contacting each of said layer comprising silver and a layer comprising silicon nitride, and wherein said layer comprising zinc oxide and said layer comprising silicon nitride are located under said layer comprising silver.
- 13. The coated article of claim 1, wherein said layer comprising silicon nitride is non-stoichiometric and is Si-rich.
- 14. The coated article of claim 13, wherein said layer comprising silicon nitride comprises SixNy, where x/y is from 0.76 to 1.5.
- 15. The coated article of claim 13, wherein said layer comprising silicon nitride comprises SixNy, where x/y is from 0.8 to 1.4.
- 16. The coated article of claim 13, wherein said layer comprising silicon nitride comprises SixNy, where x/y is from 0.85 to 1.2.
- 17. The coated article of claim 12, wherein said layer comprising silicon nitride has an index of refraction “n” of at least 2.05.
- 18. The coated article of claim 12, wherein said layer comprising silicon nitride has an index of refraction “n” of at least 2.07.
- 19. An IG window unit including the coated article of claim 1, wherein the IG window unit further comprising another glass substrate, wherein the IG window unit has a visible transmission of at least about 65%.
- 20. The coated article of claim 1, wherein said coating comprises, from the glass substrate outwardly:
a layer comprising titanium oxide; a layer comprising Si-rich silicon nitride; a first contact layer comprising zinc oxide; said layer comprising silver provided over and in contact with said first contact layer; a dielectric layer; another layer comprising silver; another dielectric layer.
- 21. The coated article of claim 20, wherein the layer comprising titanium oxide has a thickness of from 20 to 60 Å, and the coated article has a Total Solar (TS) value of no greater than 40%.
- 22. The coated article of claim 1, wherein the coating comprises a double-silver multi-layer low-E coating.
- 23. The coated article of claim 1, wherein the coated article is characterized by the following transmissive color at a normal viewing angle, after heat treatment:
- 24. A coated article including a coating supported by a glass substrate, wherein the coating comprises from the glass substrate outwardly:
a layer comprising Si-rich silicon nitride SixNy, where x/y is from 0.85 to 1.2; a layer comprising zinc oxide contacting the layer comprising Si-rich silicon nitride; and a layer comprising silver contacting the layer comprising zinc oxide.
- 25. The coated article of claim 24, wherein the coated article has a ratio Tvis/Rs of at least 20 absent heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square).
- 26. The coated article of claim 24, wherein the coated article has a ratio Tvis/Rs of at least 22 absent heat treatment.
- 27. The coated article of claim 24, wherein the coated article has a ratio Tvis/Rs of at least 25 absent heat treatment.
- 28. The coated article of claim 24, wherein the coated article is heat treated and has a ratio Tvis/Rs of at least 30 after heat treatment.
- 29. The coated article of claim 24, wherein the coated article is heat treated and has a ratio Tvis/Rs of at least 32 after heat treatment.
- 30. A method of making a coated article, the method comprising:
providing a glass substrate; sputtering a first zinc oxide inclusive layer over a first layer comprising silicon nitride on the substrate using a first oxygen partial pressure; sputtering a first layer comprising silver directly on the first zinc oxide inclusive layer; sputtering a second zinc oxide inclusive layer over a second layer comprising silicon nitride on the substrate using a second oxygen partial pressure, wherein the second zinc oxide inclusive layer is above the first zinc oxide inclusive layer; and wherein the first oxygen partial pressure is greater than the second oxygen partial pressure.
- 31. The method of claim 30, wherein the coated article is heat treated, and has a ratio Tvis/Rs of at least 30 after heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square) and a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 8 due to the heat treatment.
- 32. The method of claim 30, wherein at least the first layer comprising silicon nitride is non-stoichiometric and is Si-rich.
- 33. A heat treated coated article comprising a coating supported by a glass substrate, wherein the coating comprises, from the glass substrate outwardly:
a layer comprising a metal oxide in direct contact with the glass substrate; a layer comprising silicon nitride in contact with the layer comprising the metal oxide; a first contact layer comprising zinc oxide in contact with the layer comprising silicon nitride; an IR reflecting layer; a second contact layer comprising at least one metal, wherein said IR reflecting layer is in contact with each of the first and second contact layers; and wherein the coated article has a ratio Tvis/Rs of at least 30 after heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square).
- 34. The coated article of claim 33, wherein the coated article has a ratio Tvis/Rs of at least 32 after heat treatment, and wherein the IR reflecting layer comprises silver.
- 35. The coated article of claim 33, wherein the coated article has a ratio Tvis/Rs of at least 34 after heat treatment.
- 36. The coated article of claim 33, wherein the coated article has a ratio Tvis/Rs of at least 36 after heat treatment.
- 37. The coated article of claim 33, wherein the coated article has a visible transmission of at least 75%, measured monolithically, after heat treatment.
- 38. The coated article of claim 33, wherein the coated article has a sheet resistance (Rs) of less than or equal to 3.0 after heat treatment.
- 39. A heat treated coated article comprising:
a multi-layer coating supported by a glass substrate, wherein the coating comprises at least one IR reflecting layer located between at least first and second layers comprising metal and/or metal oxide; and wherein the coated article has a ratio Tvis/Rs of at least 30 after heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square) and a ΔE* value (glass side reflective and/or transmissive) of less than or equal to about 8 due to the heat treatment.
- 40. The coated article of claim 39, wherein the IR reflecting layer comprises silver.
- 41. The coated article of claim 39, wherein the coating comprises first and second IR reflecting layers comprising silver, and wherein a lower of the first and second IR reflecting layers which comprise silver has a sheet resistance (Rs) at least 10% higher than that of an upper of the first and second IR reflecting layers.
- 42. The coated article of claim 1, further comprising another layer comprising silver, and wherein a lower of the layers comprising silver has a sheet resistance (Rs) at least 10% higher than that of an upper of the layers comprising silver.
- 43. The coated article of claim 1, wherein the coated article has a sheet resistance (Rs) of less than or equal to 3.0 after heat treatment.
- 44. A heat treated coated article comprising a coating supported by a glass substrate, wherein the coating comprises, from the glass substrate outwardly:
a dielectric layer in direct contact with the glass substrate; a layer comprising silicon nitride in contact with the dielectric layer; a first contact layer comprising zinc oxide in contact with the layer comprising silicon nitride; an IR reflecting layer; a second contact layer comprising at least one metal, wherein said IR reflecting layer is in contact with each of the first and second contact layers; and wherein the coated article has a ratio Tvis/Rs of at least 30 after heat treatment (where Tvis is visible transmission (%) and Rs is sheet resistance of the coating in units of ohms/square).
- 45. The coated article of claim 44, wherein the coated article has a ratio Tvis/Rs of at least 34 after heat treatment.
- 46. The coated article of claim 44, wherein the coated article has a sheet resistance (Rs) of less than or equal to 3.0 after heat treatment.
- 47. The coated article of claim 1, wherein a portion of the coating comprises, in the following order proceeding away from the glass substrate:
a layer comprising silicon nitride; a layer comprising zinc oxide; a layer comprising an oxide of NiCr; said layer comprising silver.
PRIORITY CLAIM AND CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part (CIP) of each of U.S. patent application Ser. No. 09/978,184, filed Oct. 17, 2001; and Ser. No. 10/314,426, filed Dec. 9, 2002, based on Provisional 60/341,837, filed Dec. 9, 2001, all of which are hereby incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60341837 |
Dec 2001 |
US |
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
09978184 |
Oct 2001 |
US |
Child |
10400080 |
Mar 2003 |
US |
Parent |
10314426 |
Dec 2002 |
US |
Child |
10400080 |
Mar 2003 |
US |