Saint-Gobain Vitrage International

Saint-Gobain Vitrage

Saint-Gobain Recherche

Francois Lerbet

Francis Defendini

Bernard Buffat

Daniele Pillias

Christian Padoy

James Barton

Corinne Papret

Frank Boulanger

Franck Perrodo

Gilles Thomas

A treatment process for the purpose of improving the chemical and/or physical durability of film containing one or more metallic oxides, nitrides, oxynitrides or oxycarbides deposited on a transparent substrate by a cathodic sputtering technique, notably assisted by a magnetic field and preferably reactive in the presence of oxygen. Said process consists of subjecting the film to a low energy ion beam.

Process for treatment of thin films based upon metallic oxide or nitride

A method is provided for generating one or more differentiated zones of electrical conductivity or infrared emissivity in a thin semi-conducting layer of metallic oxide or oxides, comprising:

Process for the treatment of thin films having properties of electrical

The invention relates to an electrochromic glazing successively comprising a glass sheet, a first electrode constituted by a transparent electroconductive layer, whose square resistance is below 5 Ohms, a layer of a cathodic electrochromic material, an electrolyte, a layer of an anodic electrochromic material and a second transparent electroconductive electrode, barrier layers being inserted between the said electrodes and the said electrochromic material layers, the square resistance of the assembly formed by an electrode and its barrier layer being below 5 Ohms.

Electrochromic glazing

An electrochromatic glazing system is provided. The system comprises a first glass sheet covered with a first transparent electrically conductive film and a second glass sheet covered with a second transparent electrically conductive film. A film of electrochromatic material, an electrolyte, and a counterelectrode are interposed between the first and second transparent electrically conductive films. The first and second electrically conductive films are connected to a voltage generator by an electrical control circuit and the voltage generator receives a set-point value from a control unit equipped with a memory and generates a potential difference as a function of the temperature of the electrolyte.

Electrochromatic glazings

The invention pertains to an electrochromic system composed of a lithium ionic conductor electrolyte and a counter electrode symmetrical with the principal layer of electrochromic material and composed of a layer of nickel oxide, preferably deposited by reactive cathode sputtering in the presence of hydrogen-bearing plasma. The invention is used in particular for electrochromic windows, which can be used, for example, in automobile tops.

Counter electrode for electrochromic systems

The invention relates to an electrochromic glazing consisting of two glass sheets (1, 4) coated with first and second transparent electroconductive layers (2, 5), separated by a layer of an electrochromic material (9), an electrolyte (8) and a counterelectrode (7), said transparent electroconductive layers (2, 5) each being provided with an electroconductive strip (3, 6) parallel to the length of the glazing, made of a material whose electric conductivity is high relative to that of transparent electroconductive layers (2, 5). The electroconductive strips (3, 6) are placed along the opposite edges of the glazing and are connected to a voltage generator which applies in coloring phase (or in fading phase), between two points A and B on the electroconductive strips (3, 6) a potential difference U.sub.1 =(V.sub.A -V.sub.B) (t) so that between point A on the electroconductive strip on the first electroconductive layer and a point R on the second electroconductive layers, directly facing point A, there is a potential difference U.sub.2 =(V.sub.A -V.sub.R) (t)=U.sub.o , where U.sub.o is constant and chosen from the stability range of the coloring (or fading) reaction.

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Paris, France

Francois Lerbet