| 摘要 |
A boundary of a well 102 of a finger structured MOSFET is positioned between an element region 104 and a gate contact 108. With this geometry, it is feasible to reduce the well and attain a decrease in noises. A well electric potential take-out region 105 is disposed in close proximity to the element region 104 within the well 102, thereby making it possible to reduce an areal size of the well and farther decrease the noises.
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