Abstract: The invention relates to a multifunctional printed circuit board which is embodied so as to be a p.c.b. coated on at least one layer or one side with an electroconductive film, which printed circuit board is provided with one or more opto-electronically active components of the same or different wavelengths. In accordance with the invention, the optically active component is embodied so as to be a luminous field integrated in the printed circuit board, which field, during the manufacturing process of the printed circuit board, is screen-printed directly onto or above a suitably structured, electroconductive layer of the printed circuit board. By virtue thereof, in the course of the manufacture of the printed circuit board, it can be directly provided with suitable optical components, which will cooperate with the discrete components to be provided afterwards.

Abstract: The invention relates to the manufacture of electroluminescent elements on the basis of a so-called planar electrode arrangement (8a, 8b), whereby the modifications in accordance with the invention enable a substantial increase of the luminous power to be attained. To strengthen the electric field and hence increase the brightness, a special multilayer technology is employed. The electric field may be further strengthened by a film having a high dielectric constant. Preferably, a customary printed circuit board is used as the supporting board, so that the process in which the electroluminescent element is manufactured can be directly integrated in the printed-circuit-board manufacturing process. A further advantage of the invention is that the printed circuit boards provided with the optical components in accordance with the invention can be soldered by means of customary solder processes.