Patent ID: 9305913
Filing Date: 2016-04-05
CPC Classification: H01L

Claim Text:
1. An electrostatic discharge protection structure, comprising: a substrate, having a first conductive type; a first well region and a second well region, having the first conductive type and disposed separately on the substrate; a third well region, having a second conductive type, disposed on the substrate and located between the first well region and the second well region; a first doped region, having the first conductive type and disposed in the first well region; a second doped region, having the second conductive type and disposed in the first well region; a third doped region, having the first conductive type and disposed in the second well region; a fourth doped region, having the second conductive type and disposed in the second well region; and a fifth doped region and a sixth doped region, disposed adjacent to each other at one of an interface of the first well region and the third well region and an interface of the second well region and the third well region, wherein the fifth doped region has the first conductive type and is located in the first well region or the second well region, and the sixth doped region has the second conductive type and is located in the third well region.