| 摘要 |
A semiconductor device formed on a first conductive type substrate is provided. The device includes a gate, a second conductive type drain region, a second conductive type source region, and a second conductive type first lightly doped region. The gate is formed on the first conductive type substrate. The second conductive type drain region and the second conductive type source region are formed in the first conductive type substrate at both sides of the gate. The second conductive type first lightly doped region is formed in the first conductive type substrate between the gate and the second conductive type source region.
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