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Invention Publication
CN105679755A 保护环结构及其形成方法 有权

保护环结构及其形成方法
Abstract:
本发明提供了电路器件。电路器件包括核心电路。该电路器件还包括具有第一掺杂剂类型的第一组保护环，第一组保护环围绕在核心电路的外围，第一组保护环包括第一保护环和第二保护环。该电路器件还包括具有第二掺杂剂类型的第二组保护环，第二掺杂剂类型与第一掺杂剂类型相反，其中，第二组保护环的至少一个保护环围绕在第一组保护环的至少一个保护环的外围，并且第二组保护环包括第三保护环和第四保护环。
Abstract(English):

A circuit device includes core circuitry. The circuit device further includes a first set of guard rings having a first dopant type, the first set of guard rings being around a periphery of the core circuitry, the first set of guard rings comprising a first guard ring and a second guard ring. The circuit device further includes a second set of guard rings having a second dopant type, the second dopant type being opposite to the first dopant type, wherein at least one guard ring of the second set of guard rings is around a periphery of at least one guard ring of the first set of guard rings, and the second set of guard rings comprises a third guard ring and a fourth guard ring.

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