Patent ID: 8507959
Filing Date: 2013-08-13
Classification: H01L

Abstract:
1. A combined-source MOS transistor, characterized in that, comprising: a control gate electrode layer, a gate dielectric layer, a semiconductor substrate, a highly-doped source region and a highly-doped drain region, wherein a Schottky source region is connected to a side of the highly-doped source region which is far from a channel, one end of the control gate extends to the highly-doped source region, the extended gate region is an extension gate in a form of a comb shape and the original control gate region is a main gate; an active region covered by the extension gate is also a channel region, and is a substrate material; the highly-doped source region which is formed by highly doping is located on both sides of each comb finger of the extension gate; the Schottky source region is formed by a metal or a metal silicide, and a Schottky junction is formed at a location where the Schottky source region and the channel under the extension gate are located; the highly-doped drain region is formed by highly-doped semiconductor material with a doping type which is opposite to that of the highly-doped source region and is located on a side of the control gate which is not extended.