The surface of an anode is made flat by wiping/cleaning of the present invention.
Thereafter, an organic compound layer and a cathode are formed to produce a light
emitting element. In this way, the distance between the anode and the cathode becomes
constant. Therefore, when an electric field is applied to the light emitting element,
the current density in the organic compound layer becomes uniform. Thus, it is
possible to prevent the deterioration of the organic compound layer and improve
the element characteristic thereof.
