LOW-EMISSIVITY COATING FOR A GLASS SUBSTRATE

The present invention relates to a glass substrate provided with a stack of thin coating layers formed by a first layer of anti-reflective dielectric material, with a refractive index of 1.65 to 2.65,located above the glass substrate. At least one structure of two layers formed by a first layer of an anti-reflective transparent dielectric material with a refractive index of 1.32 to 1.55, locatedin the bottom position, and a second layer of a metal functional film with reflective properties in the infrared range, located in the top position, said structure being located above the first layerof anti-reflective dielectric material. A second layer of absorbent material forming an anti-corrosion barrier for protecting the metal functional film against oxidation and corrosion. A third layer of an anti-reflective material, said layer being selected from a metal oxide with a refractive index of 1.32 to 1.55, a metal oxide with a refractive index of 1.65 to 1.95 or an aluminium-doped zinc oxide (AZO); and a fourth pro