Patent ID: 8058585
Filing Date: 2011-11-15
Classification: B29D,G02B

Abstract:
1. A plasma processing method for processing a substrate by using a plasma processing apparatus including an upper and a lower electrode configured to face each other; a high frequency power supply, connected to the lower electrode, for supplying a high frequency power into a processing chamber to convert a processing gas to a plasma; and a magnetic field generating unit for forming a magnetic field in the processing chamber, the method comprising the steps of: loading, on the lower electrode, a substrate having a resist mask formed on a transcription film made of an organic material, the resist mask having a plurality of lens shapes arranged in rows and columns across a surface of the substrate, the lens shapes in adjacent columns having a first distance between two adjacent lens shapes in the same row and having a second distance diagonally between two neighboring lens shapes in different rows; supplying the processing gas including a gas made up of carbon and fluorine into the processing chamber; forming the magnetic field, which is oriented toward one direction and perpendicular to a line connecting the upper and the lower electrode; supplying the high frequency power to the lower electrode in the processing chamber to form an electric field that converts the processing gas into the plasma by magnetron discharge caused by a presence of an orthogonal electromagnetic field; and while supplying the high frequency power, controlling the magnitude thereof, as divided by the area of the surface of the substrate, to be in a range from about 1200 W/31415.9 mm