An electroluminescent (EL) device includes a plurality of first transistors provided over a first area of a substrate and a plurality of second transistors provided over a second area of the substrate. A plurality of light emitting elements, each including an EL layer, are coupled to corresponding ones of the first transistors, and at least one insulating layer is provided on at least one of the plurality of first transistors or the plurality of second transistors. A conductive layer having a multilayer structure is then provided over at least one of the plurality of second transistors and on the at least one insulating layer.