Patent ID: 7141479
Filing Date: 2006-11-28
Classification: H01L

Abstract:
1. A method for producing a bipolar transistor, comprising: (a) providing a layer sequence, which comprises a substrate, a first oxide layer and a monocrystalline SOI layer; (b) generating a collector region in the substrate; (c) generating a second oxide layer on the layer sequence; (d) generating a base region in the first oxide layer, such that the base region is in contact with the monocrystalline SOI layer; (e) generating an emitter region on the base region, such that the emitter region is isolated from the monocrystalline SOI layer; and (f) generating a collector contact, a base contact and an emitter contact, and wherein between step (b) and (c) the monocrystalline SOI layer is structured to generate a base terminal region from the monocrystalline SOI layer and a trench region.