Method for manufacturing and opacifying device for windows

A method for manufacturing an opacifying device for windows or walls that are at least partially transparent, the manufacturing method comprising the following steps:

• providing a polarizable part including a central layer with a polarizable material able to be opaque or at least partially transparent according to a voltage being subjected thereto, two conductive layers surrounding the central layer able to apply a voltage on either side of the central layer, and, two insulating layers surrounding the two conductive layers,
• removing a portion of the polarizable part so as to create an electrical connection access to each conductive layer,
• providing two cover layers made of an electrically insulating material,
• depositing a conductive entity on each cover layer, the depositing securing the conductive entity to each cover layer so as to create at least one conductive track on each cover layer,
• securing the cover layers provided with conductive tracks to the polarizable part, the cover layers provided with conductive tracks surrounding the polarizable part, each conductive track being in electrical contact with a corresponding conductive layer of the two conductive layers at the corresponding electrical connection access and each conductive track having a free part outside of the electrical connection access able to be electrically connected to an external conductor.