Apparatuses for desposition or etching

Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With microwave gas energizing means

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118723, 20429801, 20429823, 20429831, C23C 1600, C23C 1400, C23F 102, C25B 900

Patent

active

061325503

ABSTRACT:
The apparatus according to the present invention is capable of maintain a plasma at relatively high pressure while preventing a window from being heated or sputtered by the plasma. The reaction chamber includes (1) an entrance window for guiding an electromagnetic wave such as a microwave or an RF to the reaction chamber, (2) a reaction room where film formation or etching for a substrate is performed by exciting a gas with the electromagnetic wave such as the microwave or the RF, and (3) an intermediate room arranged between the reaction room and the entrance window and having a pressure higher than that in the reaction chamber. The gas in the intermediate room is not excited with the electromagnetic wave such as the microwave or the RF.

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