Chamber bodies having machined upper walls, chamber arrangements and semiconductor processing systems having chamber bodies with machined upper walls, and methods of making chambers with machined upper walls

Abstract

A chamber body includes a ceramic weldment. The ceramic weldment has an upper wall, a sidewall, a lower wall, and a lower wall rib segment. The sidewall is coupled to the upper wall by a sidewall-to-upper wall weld, the lower wall coupled to the sidewall by a sidewall-to-lower wall weld and defining a passthrough, and the lower wall rib segment is coupled to the lower wall plate by a lower wall rib segment weld. The upper wall has an upper wall plate portion and an upper wall rib portion through that define an upper wall unwelded ribbed region, overlay the passthrough, and which is formed using a singular ceramic workpiece using a subtractive manufacturing technique. Chamber arrangements, semiconductor processing systems, and methods of making ceramic weldments are also described.

Dependencies are inferred from the claim text.