LOW-E MATCHABLE COATED ARTICLES HAVING ABSORBER FILM AND CORRESPONDING METHODS
First Claim
1. A coated article including a coating on a glass substrate, wherein the coating comprises:
- a first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn (wt. %), provided on the glass substrate;
a first infrared (IR) reflecting layer comprising silver located on the glass substrate and directly over and contacting the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn;
wherein no silicon nitride based layer is located directly under and contacting the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn;
at least one dielectric layer comprising at least one of;
(a) an oxide of silicon and zirconium, (b) an oxide of zirconium, and (c) an oxide of silicon;
wherein the at least one dielectric layer comprising at least one of (a), (b), and (c) is located;
(1) between at least the glass substrate and the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn (wt. %), and/or (2) between at least the first IR reflecting layer comprising silver and a second IR reflecting layer comprising silver of the coating;
an absorber film including a layer comprising silver, wherein a ratio of a physical thickness of the first IR reflecting layer comprising silver to a physical thickness of the layer comprising silver of the absorber film is at least 5;
1, and wherein the layer comprising silver of the absorber film does not directly contact the first IR reflecting layer; and
wherein the coated article is configured to have, measured monolithically, at least two of;
(i) a transmissive Δ
E* value of no greater than 3.0 due to a reference heat treatment for 12 minutes at a temperature of about 650 degrees C., (ii) a glass side reflective Δ
E* value of no greater than 3.0 due to the reference heat treatment for 12 minutes at a temperature of about 650 degrees C., and (iii) a film side reflective Δ
E* value of no greater than 3.5 due to the reference heat treatment for 12 minutes at a temperature of about 650 degrees C.
1 Assignment
0 Petitions
Accused Products
Abstract
A low-E coating has good color stability (a low ΔE* value) upon heat treatment (HT). Thermal stability may be improved by the provision of an as-deposited crystalline or substantially crystalline layer of or including zinc oxide, doped with at least one dopant (e.g., Sn), immediately under an infrared (IR) reflecting layer of or including silver; and/or by the provision of at least one dielectric layer of or including at least one of: (a) an oxide of silicon and zirconium, (b) an oxide of zirconium, and (c) an oxide of silicon. These have the effect of significantly improving the coating'"'"'s thermal stability (i.e., lowering the ΔE* value). An absorber film may be designed to adjust visible transmission and provide desirable coloration, while maintaining durability and/or thermal stability.
-
Citations
56 Claims
-
1. A coated article including a coating on a glass substrate, wherein the coating comprises:
-
a first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn (wt. %), provided on the glass substrate; a first infrared (IR) reflecting layer comprising silver located on the glass substrate and directly over and contacting the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn; wherein no silicon nitride based layer is located directly under and contacting the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn; at least one dielectric layer comprising at least one of;
(a) an oxide of silicon and zirconium, (b) an oxide of zirconium, and (c) an oxide of silicon;wherein the at least one dielectric layer comprising at least one of (a), (b), and (c) is located;
(1) between at least the glass substrate and the first crystalline or substantially crystalline layer comprising zinc oxide doped with from about 1-30% Sn (wt. %), and/or (2) between at least the first IR reflecting layer comprising silver and a second IR reflecting layer comprising silver of the coating;an absorber film including a layer comprising silver, wherein a ratio of a physical thickness of the first IR reflecting layer comprising silver to a physical thickness of the layer comprising silver of the absorber film is at least 5;
1, and wherein the layer comprising silver of the absorber film does not directly contact the first IR reflecting layer; andwherein the coated article is configured to have, measured monolithically, at least two of;
(i) a transmissive Δ
E* value of no greater than 3.0 due to a reference heat treatment for 12 minutes at a temperature of about 650 degrees C., (ii) a glass side reflective Δ
E* value of no greater than 3.0 due to the reference heat treatment for 12 minutes at a temperature of about 650 degrees C., and (iii) a film side reflective Δ
E* value of no greater than 3.5 due to the reference heat treatment for 12 minutes at a temperature of about 650 degrees C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
32. A coated article including a coating on a glass substrate, wherein the coating comprises:
-
a first dielectric layer located on the glass substrate; a first infrared (IR) reflecting layer comprising silver located on the glass substrate and over at least the first dielectric layer; a second IR reflecting layer comprising silver located on the glass substrate, wherein the first IR reflecting layer comprising silver is located between at least the glass substrate and the second IR reflecting layer comprising silver; an absorber film including a layer comprising silver that does not directly contact any of the first and second IR reflecting layers, and wherein a ratio of a physical thickness of the first IR reflecting layer comprising silver, and/or a physical thickness of the second IR reflecting layer comprising silver, to a physical thickness of the layer comprising silver of the absorber film is at least 5;
1. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
-
-
56. A method of making a coated article including a coating on a glass substrate, wherein the method comprises:
-
sputter-depositing a first dielectric layer on the glass substrate; sputter-depositing a first infrared (IR) reflecting layer comprising silver on the glass substrate and over the first dielectric layer; sputter-depositing a second IR reflecting layer comprising silver on the glass substrate, wherein the first IR reflecting layer comprising silver is located between the glass substrate and the second IR reflecting layer comprising silver; sputter-depositing an absorber film including a layer comprising silver on the glass substrate, sputter-depositing at least a second dielectric layer, which is located between at least the first IR reflecting layer and the absorber film, and a third dielectric layer which is located between at least the second IR reflecting layer and the absorber film; wherein a ratio of a physical thickness of the first IR reflecting layer comprising silver, and/or a physical thickness of the second IR reflecting layer comprising silver, to a physical thickness of the layer comprising silver of the absorber film is at least 5;
1.
-
Specification