Patent ID: 7786531
Filing Date: 2010-08-31
Classification: H01L,H03K

Abstract:
1. A trenched vertical semiconductor power device comprising: a plurality of trenched gates comprise a first gate-conductive layer filling in trenches; an inter-dielectric layer covering said trenched gates and a second gate-conductive layer formed as a plurality of discrete conductive segments each disposed on top of said inter-dielectric layer wherein each of said discrete conductive segments having a segment width approximately the same as a width of each of said trenched gates for coupling with said first gate-conductive layer over said inter-dielectric layer to constitute a capacitor; and each of said discrete conductive segments has a cap shape having a top segment extending over substantially the width of each of said trenched gates above said inter-dielectric layer above said trenched gate and each of said conductive segments extends downwardly from both ends of the top segments and then outwardly to a horizontal location slightly beyond edges of each of said trenched gates on both ends.