Patent ID: 8685759

Claim:
A semiconductor manufacturing apparatus, comprising: a device operable to measure a wafer for wafer data after a first process; a processing chamber operable to perform a second process to the wafer; an electrostatic chuck (E-chuck) in the processing chamber, wherein the E-chuck includes: a base component; a chuck disposed over the base component and having an electrode and a dielectric feature formed on the electrode, wherein the electrode is structurally configured to apply an electrostatic force through the dielectric feature to secure the wafer to the chuck and the dielectric feature is structurally configured to directly contact the wafer to maintain the electrostatic force, the chuck being different than the base component; a tuning structure extending from the base component to the chuck, the tuning structure structurally configured to mechanically hold the chuck to the base component by clamping forces, wherein the tuning structure is structurally configured to dynamically adjust the clamping forces, the clamping forces being different than the electrostatic forces; a sensor integrated with the E-chuck and sensitive to the clamping forces; and a process control module in communication with the device and to adjust the clamping forces holding the chuck to the base component based on the wafer data received from the device and sensor data from the sensor.