Patents by Inventor Wolfgang Roesener

Wolfgang Roesener has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9293524
    Abstract: A semiconductor device has a semiconductor body with bottom and top sides and a lateral surface. An active semiconductor region is formed in the semiconductor body and an edge region surrounds the active semiconductor region. A first semiconductor zone of a first conduction type is formed in the edge region. An edge termination structure having at least N field limiting structures is formed in the edge region. Each of the field limiting structures has a field ring and a separation trench formed in the semiconductor body, where N is at least 1. Each of the field rings has a second conduction type, forms a pn-junction with the first semiconductor zone and surrounds the active semiconductor region. For each of the field limiting structures, the separation trench of that field limiting structure is arranged between the field ring of that field limiting structure and the active semiconductor region.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: March 22, 2016
    Assignee: Infineon Technologies AG
    Inventors: Elmar Falck, Wolfgang Roesener, Hans Peter Felsl, Andre Stegner