Low-E matchable coated articles having absorber film and corresponding methods

US10759693B2 · kind B2 · utility

Assignee

• Guardian Glass, LLC · US

Inventors

• Yongli Xu · Plymouth, US
• Brent Boyce · Novi, US
• Salah Boussaad · Auburn Hills, US
• Philip J. Lingle · Temperance, US
• Jingyu Lao · Saline, US
• Richard Vernhes · Auburn Hills, US

Key dates

• Filing date: Oct 8, 2019
• Grant date: Sep 1, 2020
• Expiry date: Oct 8, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/156
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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 an oxide of zirconium. 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. The dielectric layer (e.g., of or including an oxide of Zr) may be sputter-deposited so as to have a monoclinic phase in order to improve thermal stability.