Low-maintenance coating technology
First Claim
Patent Images
1. A substrate having a major surface on which there is a low-maintenance coating, the low-maintenance coating including a thickness of film comprising titania, said thickness being less than 250 Å
- , wherein only part of that thickness includes tungsten oxide, said thickness including an inner portion and an outer portion, the inner portion being closer to the substrate than is the outer portion, the outer portion being the part that includes tungsten oxide, wherein the outer portion defines an exposed, outermost face of the low-maintenance coating, wherein the coating has a region ratio of between about 0.2 and 7, the region ratio being the thickness of the outer portion divided by the thickness of the inner portion, and wherein said coated substrate has a haze value of less than 0.30.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides a substrate bearing a low-maintenance coating. In some embodiments, the coating includes a low-maintenance film that includes a thickness of film comprising titania, wherein only part of that thickness includes tungsten. The thickness includes an inner portion and an outer portion, the outer portion being the part that includes tungsten. The invention also provides methods and equipment for depositing such coatings.
-
Citations
29 Claims
-
1. A substrate having a major surface on which there is a low-maintenance coating, the low-maintenance coating including a thickness of film comprising titania, said thickness being less than 250 Å
- , wherein only part of that thickness includes tungsten oxide, said thickness including an inner portion and an outer portion, the inner portion being closer to the substrate than is the outer portion, the outer portion being the part that includes tungsten oxide, wherein the outer portion defines an exposed, outermost face of the low-maintenance coating, wherein the coating has a region ratio of between about 0.2 and 7, the region ratio being the thickness of the outer portion divided by the thickness of the inner portion, and wherein said coated substrate has a haze value of less than 0.30.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
20. A substrate having a major surface on which the following films are coated in sequence, moving outwardly from the major surface:
-
i) a functional film comprising a material selected from the group consisting of indium tin oxide and fluorine-containing tin oxide; and ii) a thickness of film comprising titania, wherein only part of that thickness includes tungsten oxide, said thickness including an inner portion and an outer portion, the inner portion being closer to the substrate than is the outer portion, the outer portion being the part that includes tungsten oxide, wherein the outer portion defines an exposed, outermost face, and wherein a thickness ratio defined as said thickness of film comprising titania divided by the thickness of the functional film is between about 0.004 and about 0.08, and wherein a region ratio defined as the thickness of the outer portion divided by the thickness of the inner portion is between about 0.2 and 7. - View Dependent Claims (21, 22, 23, 24)
-
- 25. A substrate having a major surface on which there is both a transparent conductive oxide film and a low-maintenance coating, the transparent conductive oxide film being closer to the substrate than is the low-maintenance coating, the low-maintenance coating including a thickness of film comprising titania, wherein only part of that thickness includes tungsten oxide, said thickness including an inner portion and an outer portion, the inner portion being closer to the substrate than is the outer portion, the outer portion being the part that includes tungsten oxide, wherein the outer portion defines an exposed, outermost face of the low-maintenance coating, wherein a region ratio defined as the thickness of the outer portion divided by the thickness of the inner portion is between about 0.2 and 7, wherein between the transparent conductive oxide film and said thickness of film comprising titania there are two layers including one comprising silica and one comprising alumina.
Specification