Patent ID: 9570311
Date: 2017-02-14
CPC Classifications: B24B,H01L

Claim:
1. A method of thinning a set of semiconductor wafers, the method comprising: placing a semiconductor wafer in a grinding module of a grinding assembly using a first robotic arm; grinding the semiconductor wafer with a coarse grinding tool at the grinding module amongst a set of grinding modules of the grinding assembly, wherein the set of grinding modules includes at least three grinding modules; grinding the semiconductor wafer with a fine grinding tool at the grinding module; moving the semiconductor wafer to a set of polishing modules using a second robotic arm different from the first robotic arm, wherein each polishing module of the set of polishing modules receives semiconductor wafers directly from each grinding module in the set of grinding modules, and the set of polishing modules includes at least two polishing modules; and polishing the semiconductor wafer at the polishing module, wherein the polishing module processes the semiconductor wafer in about one-third of a time taken by a grinding cycle of the grinding module of the set of grinding modules.