Patent ID: 9744642
Date: 2017-08-29
CPC Classifications: B24B

Claim:
1. A chemical-mechanical planarization (CMP) system in a semiconductor fabrication facility, the CMP system comprising: at least one chemical-mechanical planarization apparatus; a valve manifold comprising: a first mixing tank configured to prepare dilute slurry; a first slurry feed pump connected to the first mixing tank by first suction piping; first discharge piping routed from the first slurry feed pump to the inlet piping of the valve manifold; first slurry return piping routed from the outlet piping of the valve manifold to the first mixing tank, wherein the first suction piping, the first discharge piping, the inlet piping, the outlet piping and the first slurry return piping define a first slurry supply loop; and a surface tension meter coupled to the first slurry supply loop.