SOI MOSFET having body contact for preventing floating body effect and method of fabricating the same
US6794716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Aug 8, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6708
Abstract
An SOI MOSFET having a body contact for preventing the floating body effect is provided. The body contact is a trench perforating a body and a buried oxide layer to a semiconductor substrate. The trench is filled with a conductive material to electrically connect the body to the semiconductor substrate. Impurity ions are implanted into a predetermined region of the semiconductor substrate in contact with the lower portion of the body contact to form an ohmic contact. In the SOI MOSFET, an additional metal interconnection line is not needed to supply power to the body. Also, malfunction of a circuit due to stray capacitance of a contact can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.