Patent ID: 6114744
Filing Date: 2000-09-05
Classification: H01L

Abstract:
A semiconductor integrated circuit device comprising:an exposed base region enclosed by a first insulating film on a semiconductor layer;a base region giving an active base region formed at the center region of the base region and an external base region formed to enclose the active base region;an emitter region formed to be enclosed in the active base region;a lead electrode for the external base region, being opened on the active base region and being extended from the external base region to the outside of the external base region over the first insulating film;a second insulating film covering the lead electrode for the external base region and being opened over the active base region;a sidewall formed on a side of a base opening of the second insulating film formed over the active base region;a lead electrode for the emitter region contacting with the emitter region through an emitter opening formed over the emitter region by the sidewall and being extended to at least the outside of the emitter opening region;a third insulating film formed to cover the lead electrode for the emitter region and the second insulating film;a base contact hole formed to expose a part of the lead electrode for the external base region;an emitter contact hole formed to expose a part of the lead electrode for the emitter region at the outside of the emitter opening; anda base electrode formed in the base contact hole, and an emitter electrode formed in the emitter contact hole, wherein:the second insulating film has an opening formed to enclose the base contact hole so that the base contact hole for exposing the part of the lead electrode is formed within the opening formed in the second insulating film.