Article having an aesthetic coating
View Patent ↗An article, e.g., a vehicle transparency, includes a first substrate and at least one aesthetic coating deposited over at least a portion of the substrate. The at least one aesthetic coating provides the article with a color defined by −10≦a*≦0 and −15≦b*≦5 and a reflectance in the range of 8% to 30%.
1. A coated article consisting essentially of
a first substrate; and
an aesthetic coating consisting of one or more layers deposited over at least a portion of the substrate, the one or more layers being selected from the group consisting of alumina, tin oxide, niobium oxide, tantalum oxide, diamond-like carbon, zirconia, titania, oxides containing zinc and tin, and oxides, nitrides or oxynitrides of silicon, and any mixtures containing any one or more of the above;
wherein the aesthetic coating providing the article with a color defined by −10≦a*≦0 and −15≦b*≦5 and having a visible light reflectance in the range of 8% to 50%, wherein the one or more metal oxide layers comprise at least one zinc stannate layer and at least one titania layer.
2. The article of claim 1 , wherein the aesthetic coating has a thickness in the range of greater than 0 Å to 20,000 Å.
3. The article of claim 1 , wherein the zinc stannate layer has a thickness in the range of 100 Å to 300 Å and the titania layer has a thickness in the range of 100 Å to 300 Å.
4. The article of claim 1 , wherein the aesthetic coating comprises zirconia having a thickness in the range of 70 Å to 700 Å.
5. The article of claim 1 , wherein the one or more metal oxide layers comprise one or more of a medium refractive index material, a low refractive index material, and a high refractive index material.
6. The article of claim 1 , wherein the aesthetic coating comprises at least one graded layer.
7. The article of claim 1 , wherein the aesthetic coating is of non-uniform thickness.
8. The article of claim 1 , wherein the aesthetic coating is deposited over substantially all of a major surface of the substrate.
9. The article of claim 1 , wherein the article has an L* in the range of 45 to 55.
10. The article of claim 1 , wherein the article has a visible light transmission of greater than or equal to 70%.
11. The article of claim 1 , wherein the article has a visible light reflectance in the range of 10% to 25%.
12. The article of claim 1 , wherein the article has a visible light reflectance in the range of 16% to 20%.
13. The article of claim 1 , wherein the article has a visible light reflectance in the range of 8% to 30%.
14. The article of claim 1 , wherein the aesthetic coating is part of a multi-layer coating stack.
15. The article of claim 1 , wherein the article is an automotive transparency selected from an automotive windshield, sidelight, back light, moon roof, or sunroof.
16. The article of claim 1 , wherein the color is defined by −8≦a*≦0.
17. The article of claim 1 , wherein the color is defined by −6≦a*≦0.
18. The article of claim 1 , wherein the color is defined by −5≦a*≦0.
19. The article of claim 1 , wherein the color is defined by −4≦a*≦−1.
20. The article of claim 1 , wherein the color is defined by −8≦a*≦−1.5.
21. The article of claim 1 , wherein the color is defined by −10≦b*≦4.
22. The article of claim 1 , wherein the color is defined by −8≦b*≦3.
23. The article of claim 1 , wherein the visible light reflectance is in the range of 8% to 30%.
24. The article of claim 1 , wherein the visible light reflectance is in the range of 8% to 20%.
25. The article of claim 1 , wherein the visible light reflectance is in the range of 15% to 25%.
26. The article of claim 1 , wherein the visible light reflectance is in the range of 16% to 20%.
27. The article of claim 1 , wherein the visible light reflectance is in the range of 9% to 19%.
28. The article of claim 1 , wherein the article has a visible light transmission of greater than or equal to 70%.
29. The article of claim 1 , including a second substrate, with the aesthetic coating positioned between the first and second substrates.
30. The article of claim 1 , wherein the article is a shaped article.
31. The article of claim 1 , wherein the first substrate is selected from glass or polymeric material.
32. The article of claim 31 , wherein the first substrate is tempered or annealed glass.
33. The article of claim 29 , wherein the first substrate is clear glass and the second substrate is colored glass.
34. The article of claim 29 , wherein the article further comprises a polymeric material located between the first and second substrates.