Patent ID: 6787872
Filing Date: 2004-09-07
Classification: H01L

Abstract:
A lateral conductive superjunction semiconductor device comprising: a trench receiving layer of one of the conductivity types supported atop a substrate and having an upper surface; a plurality of spaced laterally extending trenches formed into said trench-receiving layer; a diffusion of the other of said conductivity types extending into the walls of said trenches and having a given depth and a given concentration; said trenches defining mesas between them of a given width and a given concentration; a drain region of said other of said conductivity types extending into said trench receiving layer and disposed at one end of said trenches; a MOSgate structure including a source region, base region and a gate electrode disposed at the other end of said trenches; the thickness and concentration of said mesas and said diffusions being selected to cause each to fully deplete under blocking voltage conditions, wherein each of said mesas extends between said drain region and said MOSgate structure.