Patent ID: 6071797
Filing Date: 2000-06-06
Classification: C23C,H01L,Y10S

Abstract:
A method of forming a thin film using plasma chemical vapor deposition, comprising the steps of:supplying a material gas into a reaction chamber;generating a plasma in the reaction chamber using the material gas supplied into said reaction chamber;depositing a film on a substrate in the reaction chamber; andcontrolling a characteristic of said reaction chamber during the step of depositing to prevent a deposition of an adhesion on an inner wall of the reaction chamber;wherein said reaction chamber is electrically conductive; andwherein said depositing step comprises the step of:applying to at least one inner wall of the reaction chamber, a bias voltage such that the deposition of the adhesion to the inner wall of the reaction chamber is prevented by etching of the adhesion as it is formed on the inner wall during deposition.