Apparatus for visualization of process chamber conditions
View Patent ↗An apparatus and method for visualization of process conditions in a process chamber or chambers, particularly during the fabrication of integrated circuits on substrates in the process chambers. The apparatus includes an inspection chamber which is installed adjacent to a process chamber. A camera provided in the inspection chamber is used to view the interior of the process chamber as the etching, chemical vapor deposition or other process is carried out in the process chamber. A video monitor is typically connected to the camera for viewing images from the camera. In the event that a defect-precipitating event occurs in the process chamber, such as a mechanical malfunction or accumulation of excessive levels of polymer deposition on the chamber walls, the event is displayed on the monitor in real-time.
1. An apparatus for visualization of conditions in the interior of at least one process chamber, comprising:
an inspection chamber positioned horizontally adjacent a transfer chamber, said transfer chamber adjacent the at least one process chamber; and
a camera provided in said inspection chamber, said camera mounted on a camera support, said cameras support adapted to horizontally bi-directionally move within said inspection chamber and said transfer chamber to position said camera to view the interior of the at least one process chamber.
2. The apparatus of claim 1 wherein said camera comprises a charge coupled device.
3. The apparatus of claim 1 further comprising a motion actuating mechanism operably engaging said camera support, said actuating mechanism adapted to horizontally bi-directionally move said camera support in said inspection chamber and said transfer chamber.
4. The apparatus of claim 3 , wherein said camera assembly comprises an elongated camera support.
5. The apparatus of claim 1 further comprising an electrostatic catch head carried by said camera, said electrostatic catch head adapted to remove particles from said inspection chamber.
6. The apparatus of claim 1 further comprising a recording device operably connected to said camera for recording images from said camera.
7. The apparatus of claim 1 , wherein said camera comprises a light source.
8. The apparatus of claim 1 wherein said camera is a panoramic camera.
9. An apparatus for visualization of conditions in multiple process chambers of an integrated cluster tool having a central transfer chamber, comprising:
an inspection chamber for positioned adjacent to the transfer chamber; and
a camera assembly having a camera provided in said inspection chamber, said camera assembly adapted to view the interior of at least one of the process chambers;
wherein said camera assembly comprises an elongated camera support and a motion actuating mechanism operably engaging said camera support, said actuating mechanism adapted to bidirectionally move said camera support in said inspection chamber and said transfer chamber to view the interior of the least one of said process chambers, and wherein said camera is carried by said camera support.
10. The apparatus of claim 9 further comprising an electrostatic catch head carried by said camera support, said electrostatic catch head adapted to remove particles from said inspection chamber.
11. The apparatus of claim 9 wherein said camera comprises a charge coupled device.
12. The apparatus of claim 9 , wherein said camera comprises a light source.
13. The apparatus of claim 9 , wherein said camera is a panoramic camera.
14. The apparatus of claim 9 , wherein said camera comprises a light source.
15. The apparatus of claim 9 wherein said camera is a panoramic camera.
16. An apparatus for visualization of conditions in multiple process chambers of an integrated cluster tool having a central transfer chamber, comprising:
an inspection chamber positioned adjacent to the transfer chamber;
a camera assembly having a camera provided in said inspection chamber said camera mounted on a camera support adapted to horizontally bi-directionally move within said inspection chamber and said transfer chamber to position said camera to view the interior of at least one of the process chambers;
an electrostatic catch head carried by said camera assembly, said electrostatic catch head adapted to remove particles from said inspection chamber; and
a voltage source operably connected to said catch head, said voltage source adapted to impart an electrostatic charge to said catch head.
17. The apparatus of claim 16 wherein said camera support comprises an elongated camera support and a motion actuating mechanism operably engaging said camera support, said actuating mechanism adapted for said horizontal bidirectional movement of said camera support in said inspection chamber, and wherein said camera and said catch head are carried by said camera support.
18. The apparatus of claim 16 wherein said camera comprises a charge coupled device.
19. The apparatus of claim 16 further comprising a recording device operably connected to said camera for recording images from said camera.
20. The apparatus of claim 16 , wherein said camera comprises a light source.