Patent ID: 6706316
Filing Date: 2004-03-16
Classification: H01L

Abstract:
A method of providing a hermetically sealed enclosure for a highly moisture sensitive electronic device, comprising:(a) depositing an electrical conductor on a substrate which provides an electrical connection with the electronic device and depositing an electrically insulating thin layer over a portion of the electrical conductor; (b) providing a low melting point indium metal or alloy in the form of a wire having diameter ranging from 1 mil to 10 mils on the electrically insulating thin layer on the substrate so that the wire is situated around a periphery of the electronic device, the wire being disposed within the circumference of a cover plate; (c) placing an ultrasonic horn over the cover plate so that ultrasonic energy can be delivered through the cover plate to the wire and applying a pressure between 20 and 100 psi; and (d) providing an acoustic wave from the ultrasonic horn through the cover plate to melt the wire.