Patent ID: 6863018

Claim:
An ion plating device comprising: a vacuum chamber adapted to be evacuated; a substrate holder placed in the vacuum chamber for holding a substrate; a vaporizing source for vaporizing a film forming material to be formed on the substrate within the vacuum chamber; a power supply unit including an RF power unit connected to the substrate holder for supplying RF power to an inside of the vacuum chamber through the substrate holder for changing the vaporized film forming material into a plasma and for depositing the film forming material from the plasma on the substrate and a bias power supply unit connected to the substrate holder in parallel to the RF power unit for supplying a bias voltage to the inside of the vacuum chamber through the substrate holder simultaneously with the power supplied by the RF power unit, and a controller wherein the bias power supply unit is adapted to output the bias voltage composed of a negative bias component having a predetermined negative voltage value for a predetermined output time and a pulse bias component corresponding to a pulse output having a positive voltage value for a predetermined time with a cycle set in a range of 1 kHz to 1 GHz, and the controller controls the ion plating device so that the ion plating device sequentially performs a preliminary plasma forming process and a film forming process in such a manner that, in the preliminary forming process, the vaporizing source does not vaporize the film forming material, the RF power unit does not supply the RF power to the inside of the vacuum chamber, and the bias power supply unit supplies the bias voltage in which an absolute value of the pulse bias component is smaller than an absolute value of the negative bias component to the inside of the vacuum chamber with a cycle set in a range of 1 kHz to 1 GHz, thereby forming the plasma within the vacuum chamber, and in the film forming process, the vaporizing source vaporizes the film forming material, the RF power unit supplies the RF power to the inside of the vacuum chamber, and the bias power supply unit supplies the bias voltage to the inside of the vacuum chamber with a cycle set in the range of 1 kHz to 1 GHz, thereby forming the plasma within the vacuum chamber, changing the vaporized film forming material into the plasma, and depositing the film forming material from the plasma on the substrate.