Patent ID: 8691660
Filing Date: 2014-04-08
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor component with trench isolation, the method comprising: preparing a semiconductor substrate with at least one predetermined doping region; forming deep trenches as far as the predetermined doping region for the purpose of realizing at least one trench isolation and a trench contact; forming a side wall insulation layer at the side walls of the trenches; forming an electrically conductive filling layer having the same conduction type as the predetermined doping region in the trenches, the electrically conductive filling layer being electrically connected to the at least one predetermined doping region of the semiconductor substrate; removing at least the electrically conductive filling layer and side wall insulation layer in the upper region of the trenches for the trench isolation for the purpose of forming shallow trench isolations; and forming a covering insulation layer in the shallow trench isolations of the trench isolation.