Electrostatic discharge (ESD) protection device and forming method thereof
US10978442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jun 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/10
Abstract
An electrostatic discharge (ESD) protection device and a method thereof are presented. A well is disposed in a substrate. A gate is disposed on the well. A source region and a drain region are located in the well and at two opposite sides of the gate respectively. A first doped region is located in the drain region, wherein the first doped region is electrically connected to the drain region. A second doped region is located in the source region, wherein the second doped region is electrically connected to the source region. A third doped region is located in the well and at a side of the drain region opposite to the gate. A fourth doped region is located in the well and at a side of the source region opposite to the gate, wherein the fourth doped region is electrically connected to the third doped region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.