In a method of creating an electroluminescent device, a plurality of organic electroluminescent pixels (10) are created on a transparent substrate (7), active electronic circuitry (14) is created on a second separate substrate (15), and the two substrates are assembled together with the active electronic circuitry (14) facing the transparent substrate (7) in such a manner as to form discrete electrical connections (17) between the active electronic circuitry and the organic light emitting diode pixels (10). An insulating matrix material (18) can then be used to fill the space between the substrates (7, 15).