Temperable three layer antireflective coating, coated article including temperable three layer antireflective coating, and/or method of making the same

US8693097B2 · kind B2 · utility

Assignee

• Guardian Industries Corp. · US

Inventors

• David M. Broadway · Northville, US
• Yiwei Lu · Ann Arbor, US
• Willem den Boer · Milpitas, US
• Darrell Golden · Canton, US
• Paul Patriacca · Belleville, US
• Gregory Scott · Shelby Charter Township, US

Key dates

• Filing date: Sep 3, 2010
• Grant date: Apr 8, 2014
• Expiry date: Apr 12, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2217/734
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A coated article includes a temperable antireflection (AR) coating that utilizes medium and low index (index of refraction “n”) layers having compressive residual stress in the AR coating. In certain example embodiments, the coating may include the following layers from the glass substrate outwardly: silicon oxynitride (SiOxNy) medium index layer/high index layer/low index layer. In certain example embodiments, depending on the chemical and optical properties of the high index layer and the substrate, the medium and low index layers of the AR coating are selected to cause a net compressive residual stress and thus optimize the overall performance of the antireflection coating when the coated article is tempered and/or heat-treated.