发明名称 |
TRENCH DMOS DEVICE WITH IMPROVED TERMINATION STRUCTURE FOR HIGH VOLTAGE APPLICATIONS |
摘要 |
A termination structure is provided for a semiconductor device. The termination structure includes a semiconductor substrate having an active region and a termination region. A termination trench is located in the termination region and extends from a boundary of the active region toward an edge of the semiconductor substrate. A MOS gate is formed on a sidewall of the termination trench adjacent the boundary. At least one guard ring trench is formed in the termination region on a side of the termination trench remote from the active region. A termination structure oxide layer is formed on the termination trench and the guard ring trench. A first conductive layer is formed on a backside surface of the semiconductor substrate. A second conductive layer is formed atop the active region and the termination region. |
申请公布号 |
EP2801114(A4) |
申请公布日期 |
2015.08.26 |
申请号 |
EP20120864072 |
申请日期 |
2012.12.13 |
申请人 |
VISHAY GENERAL SEMICONDUCTOR LLC |
发明人 |
LIN, YIH-YIN;LIN, PAI-LI;HSU, CHIH-WEI |
分类号 |
H01L29/78;H01L21/336;H01L29/06;H01L29/40;H01L29/739;H01L29/872 |
主分类号 |
H01L29/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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