| 摘要 |
<p>A device having a substrate defined with a device region is presented. The device region includes an ESD protection circuit having a transistor. The transistor includes a gate having first and second sides, a first diffusion region disposed adjacent to the first side of the gate and a second diffusion region displaced away from the second side of the gate. The device includes a first device well encompasses the device region and a second device well disposed within the first device well. The second device well encompasses the first diffusion region and at least a part of the gate. The device also includes a third well which is disposed within the second device well and a drain well which encompasses the second diffusion region and extends below the gate.</p> |
