Patent ID: 8324713
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. A lateral-vertical bipolar junction transistor (LVBJT) comprising: a substrate; a well region of a first conductivity type over the substrate; a first dielectric over the well region; a first electrode over the first dielectric; a collector of a second conductivity type opposite the first conductivity type in the well region, wherein the collector is on a first side of the first electrode and adjacent the first electrode; an emitter of the second conductivity type in the well region, wherein the emitter is on a second side of the first electrode and adjacent the first electrode, wherein the second side is opposite the first side; a base contact of the first conductivity type in the well region and adjacent the collector, wherein the collector substantially encircles the base contact on more than one side of the base contact; a gate strip over the well region, wherein the collector and the base contact are on opposite sides of the gate strip, and wherein the collector and the base contact both contact a same portion of the well region, with the same portion being directly under the gate strip; and a collector extension region having a lower impurity concentration than the collector, wherein the collector extension region adjoins the collector, wherein the collector extension region faces the emitter, and wherein the LVBJT does not comprise any emitter extension region facing the base contact.