Patent ID: 9165587
Filing Date: 2015-10-20
Classification: G11B,H01J

Abstract:
1. An etch chamber for etching substrates, comprising: a main chamber body having an entrance isolation valve and an exit isolation valve opposite the entrance isolation valve, the entrance and exit isolation valves configured to enable passage of substrate carrier; transport tracks provided inside the main chamber body and positioned between the entrance isolation valve and the exit isolation valve; a process gas delivery assembly coupled to a first side of the chamber body; a substrate carrier supporting a substrate, the substrate carrier riding on the transport tracks to enter the main chamber through the entrance isolation valve and exit through the exit isolation valve, wherein when the substrate carrier assumes a processing position the substrate is maintained in place on the substrate carrier; a plasma power applicator configured to sustain plasma in a void between the process gas delivery assembly and the substrate; a movable electrode assembly coupled on a second side opposite the first side of the chamber body and opposite the side of the void between the process gas delivery assembly and the substrate, the movable electrode operable to move an electrode to assume a distal position during transport of the substrate and assume a proximal position proximal to the substrate without touching any surface of the substrate during etch processing so as to capacitively couple RF energy through a gap maintained between the electrode and one surface of the substrate and cause plasma species in the chamber to accelerate towards the substrate so as to etch the opposite surface of the substrate; wherein the electrode is shaped to complement the one surface of the substrate.