Getter pump module and system including focus shields

Details Getter pump module and system including focus shields Getter pump module and system including focus shields

1997-12-24

2000-08-29

Thorpe, Timothy S.

Pumps

Electrical or getter type

417 51, F04B 3702

Patent

active

061098809

ABSTRACT:
An improved getter pump module includes a number of getter elements and a heating element that heats the getter elements. The getter elements are preferably porous, sintered getter disks. The heating element is disposed proximate to the getter elements and provides heat to activate the getter material and cause it to pump desired gasses. The getter elements and heater element are partially surrounded by a focus shield that is positioned between the getter elements and a wall of a processing chamber that encloses the getter elements, the heater element, and the focus shield. The focus shield is provided to reflect thermal energy to the getter material from the heater element, to provide high pumping speeds or short activation/baking times, and to reduce the heat seen by the chamber from the heating element. In certain embodiments of the present invention the focus shield is angled as to be wedge shaped, and may include planar extension portions. Multiple focus shields are provided in some embodiments.

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