Patent ID: 8951894
Filing Date: 2015-02-10
Classification: H01J,H01L

Abstract:
1. A method for forming a film in a plasma treatment apparatus comprising, in a reaction chamber, a first electrode configured so that a substrate is placed thereon; and a second electrode facing the first electrode, the second electrode comprising protruding portions on a surface of the second electrode opposite to the first electrode wherein the second electrode comprises first gas introduction ports in top surfaces of the protruding portions and second gas introduction ports between the protruding portions; the method comprising the steps of: supplying power to a high-frequency power source while a reactive gas is introduced in the reaction chamber from the first gas introduction ports and a deposition gas is introduced in the reaction chamber from the second gas introduction ports; generating bulk plasma with an electron density which is higher directly under the protruding portions of the second electrode than on a periphery of side surfaces of the protruding portions; and forming the film over the substrate.