Plasma antenna

Coating apparatus – Gas or vapor deposition – With treating means

Reexamination Certificate

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Details

C118S7230IR, C156S345480, C343S876000

Reexamination Certificate

active

07367281

ABSTRACT:
The plasma antenna is designed to allow connection between electric elements within the antenna to be varied without changing the construction of the antenna during a chemical vapor deposition process, thereby maximizing efficiency of a cleaning or deposition process. The plasma antenna comprises two or more coils to which RF power is supplied from an RF power source, respectively, and a switch connected to ends of the coils. The coils are constructed to have different impedances. The circuit construction of the plasma antenna can be changed on the basis of an inductive coupled plasma antenna so as to generate parallel connection type plasma, series connection type plasma, or capacitive coupled plasma according to the kind of process, such as cleaning or depositing, without changing the construction of the antenna, so that the process can be performed efficiently, thereby enhancing productivity through reduction in manufacturing costs attributed to the simple construction of the antenna.

REFERENCES:
patent: 5888413 (1999-03-01), Okumura et al.
patent: 6308654 (2001-10-01), Schneider et al.
patent: 6444084 (2002-09-01), Collins
patent: 6479910 (2002-11-01), Vithayathil
patent: 6518190 (2003-02-01), Lill et al.
patent: 2001/0019269 (2001-09-01), Yudahira
patent: 2003/0128571 (2003-07-01), Kawashima
patent: 2003/0129835 (2003-07-01), Kholodenko et al.
patent: 2004/0056602 (2004-03-01), Yang et al.
patent: 2004/0163764 (2004-08-01), Collins et al.
patent: 2005/0083221 (2005-04-01), Seymour

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