Patent ID: 8618608
Filing Date: 2013-12-31
Classification: H01L

Abstract:
1. A lateral silicon controlled rectifier structure, comprising: a P-type substrate; an N-well region formed in the P-type substrate; a first P+ doped region formed in the N-well region and being directly connected to an anode; a P-well region formed in the P-type substrate and bordering upon the N-well region; a first N+ doped region formed in the P-well region and separated from the first P+ doped region by a spacing distance, the first N+ doped region being directly connected to a cathode; a gate structure overlying a portion of the P-type substrate between the first P+ doped region and the first N+ doped region, wherein the gate structure is right above a junction formed between the N-well region and the P-well region; a second N+ doped region formed in the N-well region, the second N+ doped region being directly connected to the anode and electrically coupled to the first P+ doped region; and a second P+ doped region formed in the P-well region, the second P+ doped region being directly connected to a cathode and electrically coupled to the first N+ doped region.