Abstract
As chip size shrinkage, similar to the pattern density effect, topography effect of STI structure would also strongly influence CMP performance due to STI filling process getting complication. In this paper, the STI topography effect on SiN erosion of direct ceria slurry CMP was studied on four different STI topography structures created by three different fill approaches on 110nm ground rule with AR∼4 and ∼8, in respectively. Besides, the performances of two kinds of ceria slurry with different selectivity of oxide to SiN were also compared.
Original language | English |
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Pages | 197-200 |
Number of pages | 4 |
State | Published - 2005 |
Externally published | Yes |
Event | 22nd International VLSI Multilevel Interconnection Conference, VMIC 2005 - Fremont, CA, United States Duration: 04 10 2005 → 06 10 2005 |
Conference
Conference | 22nd International VLSI Multilevel Interconnection Conference, VMIC 2005 |
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Country/Territory | United States |
City | Fremont, CA |
Period | 04/10/05 → 06/10/05 |