Patent ID: 8383194

Claim:
A film forming apparatus that evaporates a raw material by an evaporation unit, transports said evaporated raw material using a carrier gas, and ejects, at a time of a film formation, said carrier gas containing said evaporated raw material onto a substrate from a gas ejection unit, thereby depositing a film of a predetermined material, wherein said film forming apparatus comprises a switching section having a first, a second, a third piping system, wherein the first piping system establishes connection between the evaporation unit and the gas ejection unit, the second piping system establishes connection between the gas ejection unit and a carrier gas source, wherein said second piping system is connected to the gas ejection unit separately from the first piping system, and the third piping system establishes connection between a carrier gas source and the first piping system downstream of the evaporation unit, wherein the three piping systems comprise valves, which are controlled for stopping, at a time of stopping said film formation subsequent to said time of said film formation, supply of the carrier as containing said evaporated raw material to said as ejection unit, and for supplying, instead of said carrier gas containing said evaporated raw material, said carrier gas not containing said evaporated raw material to said gas ejection unit, and wherein said film forming apparatus further comprises a plurality of said gas ejection units that are provided for said evaporation unit.