Method of matching two or more plasma reactors

Etch rate distributions are captured at a succession of hardware tilt angles of the RF source power applicator relative to the workpiece and their non-uniformities computed, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset α in tilt ang...

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Bibliographische Detailangaben
Hauptverfasser: KHAN ANISUL H, SARAF GAURAV, CHANG WEN TEH, ABOOAMERI FARID, HERSCH BRADLEY SCOTT, YANG XIAWAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Etch rate distributions are captured at a succession of hardware tilt angles of the RF source power applicator relative to the workpiece and their non-uniformities computed, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset α in tilt angle α between the non-uniformity functions of the two plasma reactors is detected. The two plasma reactors are then matched by performing a hardware tilt in one of them through a tilt angle equal to the offset α.