发明授权
US07229843B2 Device and method for monitoring process exhaust gas, semiconductor manufacturing device, and system and method for controlling semiconductor manufacturing device 有权
用于监控工艺废气的装置和方法,半导体制造装置以及用于控制半导体制造装置的系统和方法

Device and method for monitoring process exhaust gas, semiconductor manufacturing device, and system and method for controlling semiconductor manufacturing device
摘要:
Process exhaust gas is sampled, and the components of the process exhaust gas are analyzed by a Fourier-transform infrared spectroscope (FT-IR) (26). The analysis result is compared with a reference analysis result obtained from an analysis of process exhaust gas generated in an operation performed under reference process conditions. If the amount of a gas component changes to an amount that is outside a predetermined range set around a reference value obtained from the reference analysis result, a signal indicating a process error is outputted. Instead of the output of the signal indicating a process error, the process conditions can be automatically adjusted.
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