Plasma processing method and apparatus
First Claim
Patent Images
1. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
- supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is generally equal in outer dimensions to the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap made up of a groove-shaped space between the dielectric plate and a dielectric ring provided around the dielectric plate, and a groove-shaped space between the antenna and a conductor ring provided around the antenna.
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Abstract
A substrate is processed while plasma distribution on the substrate is controlled by a plasma trap made up of a groove-shaped space between a dielectric plate and a dielectric ring provided around the dielectric plate, and a groove-shaped space between an antenna and a conductor ring provided around the antenna.
71 Citations
21 Claims
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1. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is generally equal in outer dimensions to the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap made up of a groove-shaped space between the dielectric plate and a dielectric ring provided around the dielectric plate, and a groove-shaped space between the antenna and a conductor ring provided around the antenna. - View Dependent Claims (2, 3, 4, 5)
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6. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is larger in outer dimensions than the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap formed of a groove-shaped space between the antenna and a conductor ring provided around the antenna.
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7. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is larger in outer dimensions than the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap made up of a groove-shaped space between the antenna and a conductor ring provided around the antenna and a groove-shaped space between the dielectric plate and the conductor ring.
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8. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being generally equal in outer dimensions to the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap made up of a groove-shaped space between the dielectric plate and a dielectric ring provided around the dielectric plate, and a groove-shaped space between the antenna and a conductor ring provided around the antenna, is provided. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being larger in outer dimensions than the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap formed of a groove-shaped space between the antenna and a conductor ring provided around the antenna, is provided.
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15. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being larger in outer dimensions than the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap made up of a groove-shaped space between the antenna and a conductor ring provided around the antenna and a groove-shaped space between the dielectric plate and the conductor ring, is provided.
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16. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is generally equal in outer dimensions to the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap made up of a space between the dielectric plate and a dielectric ring provided around the dielectric plate, and a space between the antenna and a conductor ring provided around the antenna.
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17. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency of 50 MHz to 3 MHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is larger in outer dimensions than the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap formed of a space between the antenna and a conductor ring provided around the antenna.
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18. A plasma processing method for generating plasma within a vacuum chamber and processing a substrate placed on a substrate electrode within the vacuum chamber, the method comprising:
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supplying a high-frequency power having a frequency of 50MHz to 3GHz to an antenna, provided within the vacuum chamber opposite to the substrate, via a through hole provided in a dielectric plate which is sandwiched between the antenna and the vacuum chamber and which is larger in outer dimensions than the antenna, while interior of the vacuum chamber is controlled to a specified pressure by introducing a gas into the vacuum chamber and, simultaneously therewith, exhausting the interior of the vacuum chamber, thus generating plasma; and
processing the substrate while plasma distribution on the substrate is controlled by a plasma trap made up of a space between the antenna and a conductor ring provided around the antenna and a space between the dielectric plate and the conductor ring.
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19. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being generally equal in outer dimensions to the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap made up of a space between the dielectric plate and a dieletric ring provided around the dielectric plate, and a space between the antenna and a conductor ring provided around the antenna, is provided.
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20. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being larger in outer dimensions than the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap formed of a space between the antenna and a conductor ring provided around the antenna, is provided.
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21. A plasma processing apparatus comprising:
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a vacuum chamber;
a gas supply device for supplying gas into the vacuum chamber;
an exhausting device for exhausting interior of the vacuum chamber;
a substrate electrode for placing thereon a substrate within the vacuum chamber;
an antenna provided opposite to the substrate electrode;
a dielectric plate sandwiched between the antenna and the vacuum chamber and being larger in outer dimensions than the antenna; and
high-frequency power supply for supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to the antenna via a through hole provided in the dielectric plate, wherein a plasma trap made up of a space between the antenna and a conductor ring provided around the antenna and a space between the dieletric plate and the conductor ring, is provided.
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Specification