Electrically controllable device having variable optical and/or energy properties
AssigneeSaint-Gobain Glass France
InventorsFabien Beteille, Samuel Dubrenat, Jean-Christophe Giron
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Abstract
The subject of the invention is an electrically controllable device having variable optical and/or energy properties of the electrochromic type, which comprises a functional film consisting of a layer or a stack of layers which is placed between two external substrates which meet the following criteria: at least one is essentially transparent; at least one is based on one (or more) film(s) based on one or more polymers; each of them is a water vapor barrier, with a water vapor permeability of at most 1 g/m2/24 h, especially at most 0.1 g/m2/24 h.
Claims30
An electrically controllable device having variable electronic optical properties, electronic energy properties, or both, comprising a functional film comprising a layer or a stack of layers and which is placed between two external substrates which meet the following criteria:
- at least one substrate is essentially transparent;
- at least one substrate comprises one or more polymer films;
- each substrate is a water vapor barrier having a water vapor permeability of at most 1 g/m2/24 h.
Dependencies are inferred from the claim text.