Patent ID: 6278143
Filing Date: 2001-08-21
Classification: H01L

Abstract:
A semiconductor device having a bipolar transistor and a junction-type field effect transistor, wherein a collector of said bipolar transistor and a source of said junction-type field effect transistor are connected, and said bipolar transistor and said junction-type field effect transistor are formed on a same substrate, said semiconductor device comprising:a source region having a source connecting region whose impurity density is greater than a channel portion;a gate region;a gate contact conductive layer being in contact with said gate region through an insulating layer;a drain region having a drain connecting region whose impurity density is greater than said channel portion; anda drain contact conductive layer being in contact with said drain connecting region through the insulating layer,wherein an upper surface of an edge portion on a drain side of said gate contact conductive layer is positioned below an upper surface of an edge portion on said gate side of said drain contact conductive layer,wherein a distance between said gate region and said drain connecting region is greater than a distance between said gate region and said source connecting region, andwherein said gate contact conductive layer extends to a direction of said drain connecting region.