Patent ID: 6726801
Filing Date: 2004-04-27
Classification: H01J,H01L

Abstract:
A dry etching apparatus comprising:a chamber into which a plasma gas for use in etching a film coated on a semiconductor substrate is provided in a plasma state; a chucking apparatus disposed in the chamber for supporting the semiconductor substrate, the chucking apparatus being upwardly elevated to a predetermined position to perform the dry etching process and moved downwardly to load and unload the semiconductor substrate; and a baffle plate for discharging from the chamber a reaction byproduct generated in the dry etching process and a non-reacted gas, the baffle plate having a flat ring shape and slits through which the reaction byproducts and the non-reacted gas are exhausted, the baffle plate being fixed to an inner surface of the chamber so that a terminal end of the baffle plate faces a peripheral surface of the chucking apparatus at the predetermined position.