SUBLIMATION PURIFICATION APPARATUS

摘要

The present invention relates to a sublimation purification apparatus used in an essential purification process of producing organic materials for organic light emitting diodes (OLED) and, more specifically, a sublimation purification apparatus for efficiently removing remaining impurities which experience sublimation purification in a chamber. A usual sublimation purification apparatus has limits of productivity and productivity increase since impurities are removed after completing the sublimation purification process in which impurities accumulate on the inside of the wall of a connection pipe which connects the chamber to a vacuum pump. Therefore, the sublimation purification apparatus of the present invention can efficiently remove impurities and improves quality of organic electroluminescent devices by increasing purification level of purified materials.