Inventors:
Jason Augustino - Livermore CA, US
Assignee:
Lam Research Corporation - Fremont CA
International Classification:
H01L 21/465, B32B 17/00, C03B 23/20
US Classification:
250504R, 2504921, 2504922, 438727, 438795, 428 34, 428 344, 428 80, 362321, 134 30, 134 35, 134 37, 1341021, 134105
Abstract:
A quartz window with an interior plenum is operable as a shutter or UV filter in a degas chamber by supplying the plenum with an ozone-containing gas. Pressure in the plenum can be adjusted to block UV light transmission into the degas chamber or adjust transmittance of UV light through the window. When the plenum is evacuated, the plenum allows maximum transmission of UV light into the degas chamber.