Source: http://www.google.de/patents/US6228229
Timestamp: 2013-05-18 15:49:10
Document Index: 397640381

Matched Legal Cases: ['application No. 96308251', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 09']

Patent US6228229 - Method and apparatus for generating a plasma - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteA method and apparatus for generating a plasma by inductively coupling electromagnetic energy into the plasma. In one embodiment, first and second antenna coils are disposed about the circumference of the plasma containment area. The first and second antenna coils are relatively spaced along the longitudinal...http://www.google.de/patents/US6228229?utm_source=gb-gplus-sharePatent US6228229 - Method and apparatus for generating a plasma Ver�ffentlichungsnummerUS6228229 B1PublikationstypErteilung Anmeldenummer09/049,839 Ver�ffentlichungsdatum8. Mai 2001Eingetragen27. M�rz 1998 Priorit�tsdatum15. Nov. 1995Auch ver�ffentlicht unterEP0774886A1EP1058489A2US6264812US6297595 ErfinderIvo J. RaaijmakersBradley O. StimsonJohn ForsterUrspr�nglich Bevollm�chtigterApplied Materials, Inc. US-Klassifikation204/192.12216/70204/192.15216/68216/71427/569427/585427/571204/298.11216/67204/298.6204/192.17Internationale KlassifikationH01L21/203H01J37/32H05H1/46H01L21/302C23C14/34H01L21/3065H01L21/205 UnternehmensklassifikationH01J37/32477H01J37/32165H01J37/321 Europ�ische KlassifikationH01J37/32M8DH01J37/32M8H4BH01J37/32O4DReferenzenPatentzitate (85)Nichtpatentzitate (33) Referenziert von (18)Externe LinksUSPTO USPTO-Zuordnung EspacenetMethod and apparatus for generating a plasmaUS 6228229 B1 Zusammenfassung A method and apparatus for generating a plasma by inductively coupling electromagnetic energy into the plasma. In one embodiment, first and second antenna coils are disposed about the circumference of the plasma containment area. The first and second antenna coils are relatively spaced along the longitudinal axis of the plasma containment area. A current is generated in the first and second antenna coils. A phase shift regulating network establishes a difference between the phase of the current in the first antenna and the phase of the current in the second antenna. The phase difference corresponds to the phase difference required to launch a helicon wave in the plasma. In a second embodiment, a chamber shield is made of a conductive material and is coupled to the RF source such that the shield functions as an RF antenna. The shield may be coupled in series to a coil surrounding the shield to increase the resultant flux density.
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