Patent ID: 6503636
Filing Date: 2003-01-07
Classification: B32B,C03C,C23C,G02B,Y10T

Abstract:
A transparent film comprising a flexible polymer film, provided thereon with a thin-film stack comprising at least one metallic functional layer with reflection properties in the infrared range, arranged between two dielectric-based antireflection layers, wherein the lower of said two antireflection layers is arranged between the functional layer and the flexible polymer film, and which lower antireflection layer (1) is a monolayer based on a modified AlN whose stress level is balanced, or (2) is a superposed sequence of layers comprising at least one AlN-based layer on top of which there is a metal oxide-based layer whose stress levels mutually compensate or cancel at least in part, wherein the transparent film does not have any substantial curvature induced by stresses internal to the stack.