Prestressable low-E layer systems for window panes

Details Prestressable low-E layer systems for window panes Prestressable low-E layer systems for window panes

2007-05-01

2007-05-01

McNeil, Jennifer (Department: 1775)

Stock material or miscellaneous articles

Composite

Of quartz or glass

C428S688000, C428S689000, C428S697000, C428S698000, C428S699000, C428S702000, C428S704000

Reexamination Certificate

active

10466523

ABSTRACT:
A multilayer film, capable of withstanding high thermal stresses, with silver as functional layer, a sacrificial metal layer placed on top of the silver layer and antireflection dielectric layers, has a metal nitride layer between the silver layer and the sacrificial metal layer. This metal nitride layer is composed in particular of Si3N4and/or AlN and constitutes an effective diffusion barrier. The optical and energy properties of the silver layer consequently remain, for the most part, preserved, even after undergoing high thermal stresses (for example of the bending or toughening type when curving and/or prestressing a window pane provided with the multilayer film).

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