Patent ID: 6506253
Filing Date: 2003-01-14
Classification: C23C,H01J

Abstract:
A photo-excited gas processing apparatus for a semiconductor process, comprising:a process chamber configured to accommodate a target substrate; an excitation chamber connected to the process chamber through a connection path; a process gas supply system configured to supply a process gas to the process chamber through the excitation chamber, and including a process gas port open to the excitation chamber; an exhaust system configured to evacuate the process chamber, wherein a flow of the process gas from the process gas port to the connection path is formed in the excitation chamber by the exhaust system evacuating the process chamber; a window including essentially of a light transmission material and disposed in a wall that defines the excitation chamber; a light source disposed outside the excitation chamber to face the window, and configured to irradiate the flow of the process gas with light through the window, thereby exciting the process gas; and a surface purge system configured to supply a purge gas along an inner surface of the window, and including a purge gas port open to the excitation chamber.