Process for manufacturing a monolithic integrated circuit comprising at least one bipolar planar transistor

摘要

The invention includes a method of manufacture of monolithic integrated VLSI circuits comprising bipolar transistors whose base regions are contacted in a self-aligned manner in proximity to the respective emitter regions by the use of silicide layers. The invention starts out from a process which, when using an insulating masking layer portion covering up the emitter area of the planar transistor, permits the self-aligned fabrication of emitter regions extending to the adjoining base region and to the base contacting region. Further embodiments of the process according to the invention permit the simultaneous manufacture of co-integrated CMOS circuits and of polycrystalline. Si-conductor leads whose resistances are reduced owing to the use of silicide layers.