Patent ID: 8598625

Claim:
A device comprising: an Electrostatic Discharge (ESD) device comprising: a first High-Voltage Well (HVW) region of a first conductivity type; a first heavily doped region of a second conductivity type opposite the first conductivity type over the first HVW region; a first doped region of the first conductivity type contacting the first heavily doped region and the first HVW region, wherein the first doped region is under the first heavily doped region and over the first HVW region, and wherein the first doped region has a first impurity concentration higher than a second impurity concentration of the first HVW region and lower than a third impurity concentration of the first heavily doped region; a second heavily doped region of the second conductivity type over the first HVW region; a first insulation region between and contacting the first heavily doped region and the second heavily doped region; and a second insulation region contacting the first heavily doped region, wherein the first insulation region and the second insulation region contact opposite sidewalls of the first heavily doped region, wherein the first heavily doped region has a first width, and the first dope region has a second width equal to or smaller than the first width, and wherein the first width and the second width are measured in a direction pointing from the first insulation region to the second insulation region.