Patent ID: 7582491
Filing Date: 2009-09-01
Classification: H01L

Abstract:
1. A method for diagnosing temporal deterioration of temperature controlling performance of an electrostatic chuck which is provided on a mounting table in a vacuum vessel and absorbs a substrate with an electrostatic force, the method comprising the steps of: (a) performing vacuum processings, wherein each vacuum processing is performed on a substrate absorbed by the electrostatic chuck, while a temperature control gas for controlling a temperature of the substrate is supplied between a rear surface of the substrate and a surface of the electrostatic chuck; (b) exposing, during the step (a), a substrate absorbed by the electrostatic chuck to an atmosphere generated by using a processing recipe for diagnosis, detecting a temperature of the substrate wherein, a pressure of the temperature control gas is controlled such that the detected temperature becomes a specific temperature, and the controlled pressure of the temperature control gas is stored in a storage unit; and (c) diagnosing the deterioration of the temperature controlling performance of the electrostatic chuck based on the pressure of the temperature control gas stored in the storage unit.