Saint-gobain Glass France

Saint-gobain Vitrage

Pascal Le Masson

Marc Maurer

Norbert Huhn

Klaus Fischer

Alfred Hans

The subject of the invention is a flexible or rigid, transparent substrate provided with a stack of thin layers, which includes at least one functional layer predominantly based on silver Ag placed between two coatings of dielectric material, at least one of the coatings comprising a layer predominantly based on aluminum nitride AlN. The functional layer or at least one of the functional layers is modified by incorporating at least one minor metal M other than Ag and/or the said AlN-based layer, or at least one of them, is modified by incorporating at least one metal M&prime; in a minor amount compared with the aluminum.

Transparent substrate provided with a heat-reflective multilayer stack

A stack of layers reflecting heat radiation for transparent substrates comprises at least one silver functional layer and, on both faces of the latter, antireflection layers formed by one or more metal compounds. The antireflection layer under the silver layer comprises an upper partial layer of zinc oxide contiguous to the silver layer, and an additional partial layer, under the zinc oxide layer, which is formed by aluminum nitride and is under internal tensile stresses. With the aid of the AlN layer under tensile stresses, it is possible to compensate the internal compressive stresses existing in the ZnO layer.

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Paris, France

Pascal Le Masson