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发明授权
CN102891169B 具有新型结构的高压(HV)器件端接及其制备方法 有权 转让

具有新型结构的高压(HV)器件端接及其制备方法
摘要：
本发明为具有新型结构的高压(HV)器件端接及其制备方法，公开了一种设置在半导体衬底中的半导体功率器件，含有一个形成在轻掺杂区上的重掺杂区，并且具有一个有源器件元区和一个边缘终接区。边缘终接区包括多个终接沟槽，形成在重掺杂区中，终接沟槽内衬电介质层，并且用导电材料填充。边缘终接还包括多个掩埋保护环，作为掺杂区，在半导体衬底的轻掺杂区中，紧靠终接沟槽。
摘要（英）：

This invention discloses a semiconductor power device disposed in a semiconductor substrate comprising a heavily doped region formed on a lightly doped region and having an active cell area and an edge termination area. The edge termination area comprises a plurality of termination trenches formed in the heavily doped region with the termination trenches lined with a dielectric layer and filled with a conductive material therein. The edge termination further includes a plurality of buried guard rings formed as doped regions in the lightly doped region of the semiconductor substrate immediately adjacent to the termination trenches.

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