Abstract
we propose an automatic wafer defect maps detection method based on unsupervised learning. There is no need for human labeling, and similar defect clusters are identified automatically without human intervention. As a result, the process is less error-prone. Whenever the wafer test result of a WUT is available, it can be compared immediately with existing clusters. If the wafer map matches one of the known defect patterns, then RCA can be done efficiently.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 2021 IEEE European Test Symposium, ETS 2021 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781665418492 |
| DOIs | |
| State | Published - 24 05 2021 |
| Externally published | Yes |
| Event | 26th IEEE European Test Symposium, ETS 2021 - Virtual, Bruges, Belgium Duration: 24 05 2021 → 28 05 2021 |
Publication series
| Name | Proceedings of the European Test Workshop |
|---|---|
| Volume | 2021-May |
| ISSN (Print) | 1530-1877 |
| ISSN (Electronic) | 1558-1780 |
Conference
| Conference | 26th IEEE European Test Symposium, ETS 2021 |
|---|---|
| Country/Territory | Belgium |
| City | Virtual, Bruges |
| Period | 24/05/21 → 28/05/21 |
Bibliographical note
Publisher Copyright:© 2021 IEEE.
Keywords
- clustering
- defect pattern
- machine learning
- mask
- wafermap
- yield learning