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US 8,945,411 B2Granted
Plasma processing apparatus and plasma processing method
AssigneePanasonic Corporation
InventorTetsuhiro Iwai
Life of this patent
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Abstract
The present invention is to achieve a reduction both in size of a plasma processing apparatus and an installation area thereof. A dry etching apparatus includes a stock unit that includes a cassette storing a tray that can be conveyed and that stores substrates. In a conveying unit storing a conveying apparatus of the tray, a rotary stage is provided. Rotational angular position adjustment of the tray is performed by rotating the rotary stage placed on the tray before being subjected to dry etching and detecting a notch by a notch detecting sensor.
Claims7
A plasma processing method, comprising:
- conveying a target object of plasma processing stored in a stock unit by a conveying apparatus stored in a conveying unit to a preparatory stage stored in the conveying unit;
- performing preliminary processing for the plasma processing to the target object placed on the preparatory stage;
- conveying the target object having undergone the preliminary processing by the conveying apparatus to the plasma processing unit and performing the plasma processing;
- and
- conveying the target object having undergone the plasma processing from the plasma processing unit to the stock unit,
- wherein the preparatory stage is arranged on the stock unit side of the conveying unit,
- wherein the conveying apparatus includes a holding unit that holds the target object and a pivotal shaft that rotates the holding unit in a horizontal plane, and the preparatory stage is arranged between the pivotal shaft and the stock unit,
- and wherein an inside of the conveying unit and an inside of the stock unit communicate with each other through a communication opening, and the preparatory stage is arranged on a virtual line connecting between the pivotal shaft and a center of the stock unit, the preparatory stage being arranged between the pivotal shaft and the communication opening, and when the preliminary processing is performed, the target object arranged on the preparatory stage partially enters the communication opening.
5 more elements
Dependencies are inferred from the claim text.