Patent ID: 6365919
Filing Date: 2002-04-02
Classification: H01L

Abstract:
A silicon carbide field effect transistor, comprising:a silicon carbide body having a principal surface; a plurality of p-conductive and n-conductive layers being embedded, in pairs, in the silicon carbide body in a lateral direction parallel to the principal surface; at least two trenches in the silicon carbide body as a source and a drain, the at least two trenches extending from the principal surface and penetrating the plurality of n-conductive and p-conductive layers, the at least two trenches being filled with highly doped silicon carbide of one of the n-conductive and p-conductive type; and a third trench as a gate electrode, the third trench extending from the principal surface and penetrating the plurality of n-conductive and p-conductive layers, the third trench having an insulating layer at an edge of the third trench, the third trench being filled with a conductivity type opposite to the conductivity type of the at least two trenches.