Patent ID: 8876974
Filing Date: 2014-11-04
Classification: C23C

Abstract:
1. A chemical vapor deposition apparatus comprising: a chamber having a gas inlet for introducing a processing gas into the chamber and a gas outlet for exhausting a gas out of the chamber; a susceptor having a surface capable of loading a substrate thereon positioned inside the chamber, wherein the processing gas is provided toward the surface of the susceptor; a shower head providing the processing gas toward the surface of the susceptor capable of loading a substrate thereon; an inert gas injection unit formed in a shape encircling the shower head and injecting an inert gas, and; a replaceable guide unit detachably installed inside the chamber to guide the gas in the chamber to the gas outlet, and the guide unit comprises: wherein the guide unit is arranged under the inert gas injection unit such that the upper end of the guide unit contacts with a lower surface of the inert gas injecting unit and the lower end of the guide unit contacts with an inner lower surface of the chamber, and therein the inert gas is provided along the front and rear surfaces of the upper end of the guide unit, wherein the flowing processing gas and inert gas are discharged out of the chamber through the gas outlet via the extending portion formed above the curved portion.