Stepped reflector plate

Details Stepped reflector plate Stepped reflector plate

2006-05-09

2006-05-09

Fuqua, Shawntina (Department: 3742)

Electric heating

Metal heating

Of cylinders

C219S405000, C219S411000, C392S416000, C392S418000, C118S724000, C118S725000, C118S050100

Reexamination Certificate

active

07041931

ABSTRACT:
In a system for thermal processing of a semiconductor substrate, a reflector plate has a stepped surface facing the substrate during heating and cooling of the substrate. The raised surface of the reflector plate has reduced reflectivity, providing advantages during, among other things, cooling of the substrate. The reflector plate also includes a number of recesses to which one or more pyrometers are coupled. These recesses have a highly reflective surface, providing advantages in the performance of the pyrometers.

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