The subject of the invention is a method of obtaining a heated window, comprising depositing a continuous thin film of a transparent electronically conductive oxide, having a sheet resistance that is uniform over the entire area of the film, on a glass sheet; and subjecting the thin film to a plasma treatment in which a device that emits excited species of an oxygen plasma is placed facing a region of the thin film, and then a relative movement is created between the thin film and the device in order to treat differentially the various regions of the thin film, so that after the thin film has been treated it has regions with different sheet resistances.