A new method for simulating the Cu removal rate in electrochemical mechanical polishing (ECMP) based on the dissolution-type polishing mechanism was developed. The effect of a protective layer on the Cu removal rate was considered in this method because the protective layer is a key element in the dissolution-type polishing mechanism. This method was used to simulate the removal rate in a rotary-type ECMP system. The simulations accurately provided the dependence of the Cu removal rate on the aperture ratio. Furthermore, the dependence of the Cu removal rate on the aperture ratio was described with respect to changes in the average protective layer amount with time. Regarding the dependence of the Cu removal rate on the aperture diameter, however, a discrepancy was observed between the simulation and experimental results because this method did not take into account the effect of the aperture diameter on the electrolyte-filling ratio in apertures. (C) 2010 The Japan Society of Applied Physics
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Korea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Pusan Natl Univ, Sch Mech Engn, Busan 46241, South KoreaKorea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Park, Youngwook
Jung, Hokyoung
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Korea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Pusan Natl Univ, Sch Mech Engn, Busan 46241, South KoreaKorea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Jung, Hokyoung
Kim, Doyeon
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Korea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South KoreaKorea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Kim, Doyeon
Lee, Taekyung
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Korea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South KoreaKorea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea
Lee, Taekyung
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Jeong, Haedo
Kim, Hyoungjae
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Korea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South KoreaKorea Inst Ind Technol, Precis Mech Proc & Control R&D Grp, Busan 46938, South Korea