Abstract: An electroluminescent lamp comprising an electrode layer including a substrate with a main surface which has been coated with a film of a conductive material, the substrate comprising a region where the conductive material film has been removed from the substrate surface by rotary abrasion. The lamp of the invention may be fabricated using an electrode layer including a conductive material coated on a substrate, with rotary abrasion removal of a region of the conductive material, to form a lead attachment and/or edge isolation area on the electrode layer.

Abstract: An electroluminescent lamp having an indexing indicium, e.g., a registration mark, located within the lit surface area of the lamp, with the registration mark preferably being transparent to the illumination generated by the lamp when the lamp is lit in use, but being readily detected when selectively activated for providing an alignment point or region on the lamp, such as by activation with ultraviolet light of specific frequency/wavelength characteristics, when the registration mark is formed by deposition on the lamp lit surface of a dot or blob of a composition containing an ultraviolet radiation-fluorescent printing ink.