Liquid Amount Monitoring Apparatus, Semiconductor Manufacturing Apparatus Having the Liquid Amount Monitoring Apparatus Mounted Thereon, and Liquid Material/Liquid Amount Monitoring Method

摘要

A semiconductor manufacturing apparatus includes a container (Xb, Ab, Bb, or Cb) for receiving a liquid material, a liquid material supply section for supplying the liquid material from the container, a liquid vaporizing section for vaporizing the liquid material supplied from the liquid material supply section to generate a gas, a processing section for using the gas supplied from the liquid vaporizing section to execute deposition processing, an exhaust section for exhausting a gas from the processing section, and a liquid level detector (Xs, As, Bs, or Cs) arranged in a bottom of the container to detect a liquid level of the liquid material based on an acoustic wave.