Patent ID: 8963240
Filing Date: 2015-02-24
Classification: H01L

Abstract:
1. A semiconductor power device comprising a plurality of power transistor cells surrounded by trenches opened in a semiconductor substrate wherein: each of said transistor cells having a source region encompassed in a body region disposed next to a trenched gate with a gate material filling in the trenches surrounding said transistor cell wherein said trenched gate further having a bottom-shielding electrode filled with the gate material disposed below and insulated from an upper gate segment said trenched gate electrically connected to a gate pad and wherein the transistor cells further surrounding an intersection of two trenches constituting a source contacting trench with the gate filling material filling an entire vertical length of the intersection of the two trenches and electrically connected to the bottom-shield electrode for electrically connected to a source metal covering over the intersection; and a deep body-dopant region in a termination area to function as a guard ring or a Junction-termination extension type termination.