Patent ID: 8476734
Filing Date: 2013-07-02
Classification: H01L

Abstract:
1. A semiconductor component, with a semiconductor body, comprising: a substrate of a first conduction type; a buried semiconductor layer of a second conduction type arranged on the substrate; and a functional unit semiconductor layer arranged on the buried semiconductor layer, in which at least two semiconductor functional units are arranged laterally alongside one another are provided; wherein the buried semiconductor layer is a part of at least one semiconductor functional unit, and the semiconductor functional units are electrically insulated from one another by an isolation structure which permeates the functional unit semiconductor layer, the buried semiconductor layer and the substrate; wherein the isolation structure comprises at least one trench including a first part and a second part, an electrically conductive contact to the substrate, the electrically conductive contact to the substrate being electrically insulated from the functional unit semiconductor layer and the buried layer by a respective one of said first and second parts of the at least one trench, and a semiconducting zone of the first conduction type situated between the first part and the second part of the at least one trench, said semiconducting zone including one semiconductor region that reaches a surface of the functional unit semiconductor layer, and forming a low-impedance contact to the substrate.