Patent ID: 8994065
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A vertical power component comprising: a silicon substrate of a first conductivity type; a lower semiconductor region of a second conductivity type on a lower surface of the silicon substrate; a lower electrode on the lower semiconductor region; an upper semiconductor region of the second conductivity type on an upper surface of the silicon substrate; a gate electrode and an upper electrode both on an upper surface of the upper semiconductor region; a porous silicon lower insulating ring at a periphery of the lower semiconductor region and silicon substrate and extending vertically upward from the lower electrode beyond the lower semiconductor region; and a porous silicon upper insulating ring at a periphery of the upper semiconductor region and silicon substrate and extending vertically downward from aligned with an upper surface of said upper semiconductor region beyond the upper semiconductor region and defining a gap with adjacent portions of the porous silicon lower insulating ring.