Layer stack for transparent substrates

US6783876B2 · kind B2 · utility

Assignee

• Saint-Gobain Vitrage · FR

Inventors

• Heinz Schicht · Bethau, DE
• Uwe Schmidt · Falkenberg, DE
• Wilfried Kaiser · Torgau, DE
• Herbert Schindler · Schwieberdingen, DE
• Rolf Pfannkuchen · Freiberg, DE

Key dates

• Filing date: Jan 30, 2003
• Grant date: Aug 31, 2004
• Expiry date: Feb 11, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12896
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A layer stack for the surface coating of transparent substrates, in particular panes of glass, has at least one metal oxide composite layer produced by reactive cathodic sputtering and contains Zn oxide and Sn oxide. Relative to the total amount of metal, this metal oxide composite layer contains from 0.5 to 6.5% by weight of one or more of the elements Al, Ga, In, B, Y, La, Ge, Si, P, As, Sb, Bi, Ce, Ti, Zr, Nb and Ta. In a layer stack which has a silver layer as a functional layer, the metal oxide composite layer may be used as an upper and/or lower antireflection layer, as a diffusion barrier layer, as a sublayer of an antireflection layer and/or as an upper cover layer.