A relatively thin printed LED backlight device with an integral diffuser may be integrated into an interior trim component using a molding process, such as injection molding, compression molding and reaction injection molding. The display portion may be placed behind a textile surface or molded grille or may form a portion of the outer surface of the trim component to provide light to low light areas of the vehicle. Electronic circuitry and components may be printed on to the substrate of the device as part of an in-line continuous process at the molding station to allow low inventory and customization of each backlight device.