Plasma processing method and plasma processing apparatus
First Claim
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1. A plasma processing apparatus of a parallel-plate type comprising a lower electrode on which a subject to be processed is placed and an upper electrode opposed to the lower electrode and having a plurality of gas inlets facing the lower electrode, wherein at least some of the plurality of gas inlets are expanded in a diameter direction at open ends thereof.
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Abstract
In a parallel-plate type plasma processing apparatus including an upper electrode having a plurality of gas introducing inlets and a support table serving as a lower electrode opposed to the upper electrode and having a silicon wafer thereon, the open ends of the inlets are expanded in their diameter directions.
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11 Claims
- 1. A plasma processing apparatus of a parallel-plate type comprising a lower electrode on which a subject to be processed is placed and an upper electrode opposed to the lower electrode and having a plurality of gas inlets facing the lower electrode, wherein at least some of the plurality of gas inlets are expanded in a diameter direction at open ends thereof.
- 6. A plasma processing apparatus of a parallel-plate type comprising a lower electrode on which a subject to be processed is placed and an upper electrode opposed to the lower electrode and having a plurality of gas inlets facing the lower electrode, wherein an interval between the lower electrode and open ends of the plurality of inlets is varied with an in-plane position of the upper electrode.
- 8. A plasma processing apparatus of a parallel-plate type comprising a lower electrode on which a subject to be processed is placed and an upper electrode opposed to the lower electrode and having a plurality of gas inlets facing the lower electrode, wherein a shield plate having a plurality of holes is disposed between the upper electrode and the lower electrode.
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