Patent ID: 8076748

Claim:
A semiconductor device with electrostatic discharge protection, the device comprising: a substrate including a well; a first region formed in the substrate, the first region having a first side, a second side, a third side and a fourth side, and a first impurity region having a first conductivity type; a first electrode group formed on the first region, the first electrode group being formed along the first side; a second electrode group formed on the first region, the second electrode group being formed along the second side; a third electrode group formed on the first region, the third electrode group being formed along the third side; a fourth electrode group formed on the first region, the fourth electrode group being formed along the fourth side; a second region formed in the substrate, the second region surrounding the first region in a plan view, the second region having a fifth side, a sixth side, a seventh side and an eighth side, and a second impurity region having the first conductivity type that surrounds the first impurity region; a dielectric film separating the first impurity region and the second impurity region; a fifth electrode group formed on the second region, the fifth electrode group being formed along the fifth side; a sixth electrode group formed on the second region, the sixth electrode group being formed along the sixth side; a seventh electrode group formed on the second region, the seventh electrode group being formed along the seventh side; and an eighth electrode group formed on the second region, the eighth electrode group being formed along the eighth side, wherein the first electrode group faces the fifth electrode group across the first side and the fifth side, wherein the second electrode group faces the sixth electrode group across the second side and the sixth side, wherein the third electrode group faces the seventh electrode group across the third side and the seventh side, wherein the fourth electrode group faces the eighth electrode group across the fourth side and the eighth side, wherein the first impurity region is formed to overlap each electrode group formed in the first region, the second impurity region is formed to overlap each electrode group formed in the second region, and the well is formed in the first region and the second region, a portion of the well separating the first impurity region and the second impurity region acting as a resistor between the first impurity region and the second impurity region to protect the semiconductor device from electro-static discharge.