Patent ID: 7713857

Claim:
A method of forming an antifuse and a conductive interconnect, comprising: forming a first via opening to a first conductor and a second via opening to a second conductor, the first and second conductors being spaced apart from one another on a substrate, the first and second via openings being formed through insulative material; after forming the first and second via openings, masking the first conductor from being exposed through the first via opening and to leave the second conductor outwardly exposed through the second via opening; while masking the first conductor, forming an antifuse dielectric within the second via opening over the exposed second conductor and not within the first via opening over the first conductor; after forming the antifuse dielectric, unmasking the first conductor to expose the first conductor through the first via opening; and after said unmasking of the first conductor, depositing conductive material to within the first via opening in conductive connection with the first conductor to form a conductive interconnect within the first via opening to the first conductor and to within the second via opening over the antifuse dielectric to form an antifuse comprising the second conductor, the antifuse dielectric within the second via opening and the conductive material deposited to within the second via opening.