An electrophoretic display device includes a first display substrate, a second display substrate, and an electrophoretic layer between the first display substrate and the second display substrate, the electrophoretic layer including a first charged particle, a second charged particle and a colored solvent. In accordance with the invention, these pollutants are removed by an endless air-jet circuit, which during its course passes a treatment locus as well as a filter. A vehicular feedback software application is enabled for the user.