Patent ID: 8981521
Filing Date: 2015-03-17
Classification: H01L

Abstract:
1. A lateral bipolar junction transistor, comprising: a substrate of a first conductivity type; a well region of a second conductivity type in the substrate; an area in the well region; at least one lightly doped region in the well region below the area; a first doped region and a second doped region of the first conductivity type in the well region on both sides of the area, wherein the first doped region is connected to a cathode and the second doped region is connected to an anode, wherein a doping concentration of the at least one lightly doped region is lower than a doping concentration of each of the first doped region and the second doped region, and is lower than a doping concentration of the well region; and at least one isolation structure in the area, wherein the at least one isolation structure is adjacent to the first doped region and the second doped region.