Invention Grant
US09123765B2 Susceptor support shaft for improved wafer temperature uniformity and process repeatability 有权
Susceptor支撑轴用于提高晶片温度均匀性和工艺重复性

Susceptor support shaft for improved wafer temperature uniformity and process repeatability
Abstract:
Embodiments of the invention generally relate to susceptor support shafts and process chambers containing the same. A susceptor support shaft supports a susceptor thereon, which in turn, supports a substrate during processing. The susceptor support shaft reduces variations in temperature measurement of the susceptor and/or substrate by providing a consistent path for a pyrometer focal beam directed towards the susceptor and/or substrate, even when the susceptor support shaft is rotated. The susceptor support shafts also have a relatively low thermal mass which increases the ramp up and ramp down rates of a process chamber.
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