Patent ID: 8986457
Filing Date: 2015-03-24
Classification: C23C,H01L

Abstract:
1. An evaporation source assembly, which is used to deposit a film on a substrate, the evaporation source assembly comprising: a body which comprises a top element, a bottom element and side walls which define a hollow chamber together, wherein, the bottom element comprises a plurality of inlet openings communicating with the chamber; a plurality of nozzles which are located at the top element and communicate with the chamber; a plurality of evaporators for containing and evaporating the evaporating material, wherein each of which is positioned below the body and corresponds to one of the inlet openings respectively, and has an opening through which the evaporator communicates with the corresponding inlet opening; and a plurality of connecting pipes configured to connect the opening of the evaporators with the inlet openings of the body, wherein, the connecting pipes are tapered pipes with a broad top and a narrow bottom so as to improve the vapor pressure of the evaporating material in the body to reach pressure balance.