Patent ID: 6472253
Filing Date: 2002-10-29
Classification: H01L

Abstract:
A method for making a programmable device comprising:forming a link metallization line; depositing an oxide layer over the link metallization line; forming a conductive via in the oxide layer in communication with the metallization line; forming a programming metallization line over the oxide layer such that an overlap portion of the programming metallization line lies over the conductive via; removing a conductive material from the conductive via to define a via hole that forms a path between the programming metallization line and the link metallization line; melting at least part of the overlap portion of the programming metallization line into the via hole to define a programming link connecting the link metallization line to the programming metallization line; depositing an oxide layer over the programming metallization line such that the oxide layer does not fill the via hole; and depositing a nitride layer over the oxide layer.