Patent ID: 6811662
Filing Date: 2004-11-02
Classification: C23C,H01J

Abstract:
A sputtering apparatus, comprising:a chamber; a cathode installed on the top of the chamber; a power-supplying device connected to the cathode; a metal target installed on the cathode; a wafer-supporting device installed in the chamber, being coaxial with and parallel to the metal target, and a wafer is held on the wafer-supporting device; a pressure-reducing device, connected to the chamber, for supplying reaction gases to the chamber; a temperature-controlling device, comprising: a temperature sensor installed on an inner sidewall of the chamber for measuring a temperature of the inner sidewall of the chamber; a temperature receiver, connected to the temperature sensor, for receiving and storing temperature data measured by the temperature sensor; a water-cooling system, comprising: a cooling water piping, encircling sidewalls of the chamber; and a temperature-controlling device connected to the cooling water piping and the temperature sensor, for supplying cooling water to the cooling water piping, and based on temperature signals from the temperature receiver, for controlling flow rate of the cooling water and consequently controlling the temperature of the inner sidewall of the chamber.