Plasma processing method and plasma processing apparatus

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United States of America Patent

PATENT NO 9870898
SERIAL NO

15018981

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Abstract

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A plasma processing method includes applying a pulse wave of high frequency electric power for plasma generation and a pulse wave of high frequency electric power for bias whose frequency is lower than that of the high frequency electric power for plasma generation on the mounting table; and controlling the pulse wave of the high frequency electric power for plasma generation and the pulse wave of the high frequency electric power for bias such that a predetermined phase difference is generated between the pulse wave of the high frequency electric power for plasma generation and the pulse wave of the high frequency electric power for bias, and a duty ratio of the high frequency electric power for plasma generation becomes greater than or equal to a duty ratio of the high frequency electric power for bias.

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Patent Owner(s)

Patent OwnerAddress
TOKYO ELECTRON LIMITEDTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagami, Koichi Miyagi, JP 50 910
Urakawa, Masafumi Miyagi, JP 17 732

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