Abstract text

In order to increase temperature controllability of a material container, an evaporation unit for forming a film includes a material supply mechanism having a material container, an outer case having a hollow interior in which the material supply mechanism is detachably secured, an internal heater provided in the material supply mechanism and heating the material supply mechanism, and a transfer path which is formed by securing the material supply mechanism to the outer case and which transfers the film forming material vaporized by heating the inner heater.