Plasma processing apparatus
First Claim
1. A plasma processing apparatus, comprising:
- a processing chamber having a dielectric window;
a substrate holding unit configured to hold thereon a processing target substrate within the processing chamber;
a processing gas supply unit configured to supply a processing gas into the processing chamber to perform a plasma process on the substrate;
a RF antenna, provided outside the dielectric window to generate plasma of the processing gas within the processing chamber by inductive coupling, having an inner antenna coil and an outer antenna coil respectively provided at an inner side and an outer side thereof in a radial direction with a gap therebetween;
a high frequency power supply unit configured to supply a high frequency power having a frequency for generating a high frequency electric discharge of the processing gas;
at least one floating coil that is in an electrically floating state and provided outside the processing chamber to be coupled to at least one of the inner antenna coil and the outer antenna coil by an electromagnetic induction; and
a capacitor provided in a loop of the at least one floating coil,wherein the inner antenna coil includes a single inner coil segment or more than one inner coil segments connected in series,the outer antenna coil includes a plurality of outer coil segments segmented in a circumferential direction and electrically connected with each other in parallel, andthe at least one floating coil is positioned between the inner antenna coil and the outer antenna coil in a radial direction.
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Accused Products
Abstract
A plasma processing apparatus includes: a processing chamber; a substrate holding unit; a processing gas supply unit; a RF antenna having an inner antenna coil and an outer antenna coil; a high frequency power supply unit; at least one floating coil that is in an electrically floating state and provided outside the processing chamber to be coupled to at least one of the inner antenna coil and the outer antenna coil by an electromagnetic induction; and a capacitor. The inner antenna coil includes a single inner coil segment or more than one inner coil segments connected in series, the outer antenna coil includes a plurality of outer coil segments segmented in a circumferential direction and electrically connected with each other in parallel, and the at least one floating coil is positioned between the inner antenna coil and the outer antenna coil in a radial direction.
9 Citations
14 Claims
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1. A plasma processing apparatus, comprising:
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a processing chamber having a dielectric window; a substrate holding unit configured to hold thereon a processing target substrate within the processing chamber; a processing gas supply unit configured to supply a processing gas into the processing chamber to perform a plasma process on the substrate; a RF antenna, provided outside the dielectric window to generate plasma of the processing gas within the processing chamber by inductive coupling, having an inner antenna coil and an outer antenna coil respectively provided at an inner side and an outer side thereof in a radial direction with a gap therebetween; a high frequency power supply unit configured to supply a high frequency power having a frequency for generating a high frequency electric discharge of the processing gas; at least one floating coil that is in an electrically floating state and provided outside the processing chamber to be coupled to at least one of the inner antenna coil and the outer antenna coil by an electromagnetic induction; and a capacitor provided in a loop of the at least one floating coil, wherein the inner antenna coil includes a single inner coil segment or more than one inner coil segments connected in series, the outer antenna coil includes a plurality of outer coil segments segmented in a circumferential direction and electrically connected with each other in parallel, and the at least one floating coil is positioned between the inner antenna coil and the outer antenna coil in a radial direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A plasma processing apparatus, comprising:
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a processing chamber having a dielectric window; a substrate holding unit configured to hold thereon a processing target substrate within the processing chamber; a processing gas supply unit configured to supply a processing gas into the processing chamber to perform a plasma process on the substrate; a RF antenna, provided outside the dielectric window to generate plasma of the processing gas within the processing chamber by inductive coupling, having an inner antenna coil and an outer antenna coil respectively provided at an inner side and an outer side thereof in a radial direction with a gap therebetween; a high frequency power supply unit configured to supply a high frequency power having a frequency for generating a high frequency electric discharge of the processing gas; at least one floating coil that is in an electrically floating state and provided outside the processing chamber to be coupled to at least one of the inner antenna coil and the outer antenna coil by an electromagnetic induction; and a capacitor provided in a loop of the at least one floating coil, wherein the inner antenna coil includes a single inner coil segment or more than one inner coil segments connected in series, the outer antenna coil includes a plurality of outer coil segments segmented in a circumferential direction and electrically connected with each other in parallel, and the at least one floating coil is provided inside the inner antenna coil or outside the outer antenna coil in a radial direction.
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Specification