Patent ID: 7833354

Claim:
A multiple nozzle evaporator for vacuum thermal evaporation, the evaporator comprising: a rectangular post-shaped crucible with an open top face; and a nozzle unit including a body portion having a rectangular post-like shape with a height smaller than that of the crucible and secured to an upper portion of the crucible, and a plurality of evaporation tubes penetrating through the body portion between top and bottom faces of the body portion, wherein the evaporation tubes of the nozzle unit are divided into two groups each group including a plurality of evaporation tubes with the evaporation tubes of one of the two groups being inclined in an opposite direction with respect to the evaporation tubes of the other group, the evaporation tubes of each group extending at an identical inclination angle with respect to a central planar axis and extending away from the central planar axis of the top face of the body portion.