Patent ID: 6583487
Filing Date: 2003-06-24
Classification: H01L

Abstract:
A high voltage component formed in a region of a silicon substrate of a first conductivity type delimited by a wall of the second conductivity type, having a lower surface including a first region of the second conductivity type connected to the wall, and an upper surface including at least one second region of the second conductivity type, a high voltage being likely to exist between the first and second regions and having to be withstood on the upper surface side by the junction between the second region and the substrate or by the junction between the wall and the substrate, a conductive track being likely to be at a high potential extending above the substrate between the second region and the wall,an insulating layer disposed under the track and above the substrate, and a succession of trenches extending in the substrate, perpendicular to the track, to a depth less than a depth of the second region, each trench being contiguous with the insulating layer and being filled with an insulator.