Patents by Inventor Panu Y. Jalas

Panu Y. Jalas 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).

  • Forming contacts on semiconductor substrates, radiation detectors and imaging devices
    Patent number: 6215123
    Abstract: A method, suitable for forming metal contacts on a semiconductor substrate at positions for defining radiation detector cells, includes the steps of forming one or more layers of material on a surface of the substrate with openings to the substrate surface at the contact positions; forming a layer of metal over the layer(s) of material and the openings; and removing metal overlying the layer(s) of material to separate individual contacts. Optionally, a passivation layer to be left between individual contacts on the substrate surface may be applied. Etchants used for removing unwanted gold (or other contact matter) are preferably prevented from coming into contact with the surface of the substrate, thereby avoiding degradation of the resistive properties of the substrate.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: April 10, 2001
    Assignee: Simage Oy
    Inventors: Risto O. Orava, Jouni I. Pyyhtiä, Tom G. Schulman, Miltiadis E. Sarakinos, Konstantinos E. Spartiotis, Panu Y. Jalas
  • Forming contacts on semiconductor substrates radiation detectors and imaging devices
    Patent number: 6046068
    Abstract: A method, suitable for forming metal contacts on a semiconductor substrate at positions for defining radiation detector cells, includes the steps of forming one or more layers of material on a surface of the substrate with openings to the substrate surface at the contact positions; forming a layer of metal over the layer(s) of material and the openings; and removing metal overlying the layer(s) of material to separate individual contacts. Optionally, a passivation layer to be left between individual contacts on the substrate surface may be applied. Etchants used for removing unwanted gold (or other contact matter) are preferably prevented from coming into contact with the surface of the substrate, thereby avoiding degradation of the resistive properties of the substrate.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: April 4, 2000
    Assignee: Simage Oy
    Inventors: Risto O. Orava, Jouni I. Pyyhtia, Tom G. Schulman, Miltiadis E. Sarakinos, Konstantinos E. Spartiotis, Panu Y. Jalas