PROGRAMMABLE ELECTRICAL FUSE WITH TEMPERATURE GRADIENT BETWEEN ANODE AND CATHODE

摘要

In some examples, a programmable electrical fuse includes at least one structural feature that increases a thermal gradient between an anode and a cathode of the programmable electrical fuse. For example, a device may include a semiconductor substrate, an electrically insulating layer overlying the semiconductor substrate, and a programmable electrical fuse overlying a portion of the electrically insulating layer. The programmable electrical fuse may include a cathode, an anode, and a conductor link connecting the cathode and the anode. The electrically insulating layer may define a first thickness between the semiconductor substrate and the cathode and a second thickness between the semiconductor substrate and the anode, and the first thickness being less than the second thickness.

主权项

1. A device comprising:
a semiconductor layer; an electrically insulating layer overlying the semiconductor substrate; and a programmable electrical fuse overlying a portion of the electrically insulating layer,
wherein the programmable electrical fuse comprises a cathode, an anode, and a conductor link physically connecting the cathode and the anode,wherein the electrically insulating layer defines a first insulating layer thickness between the semiconductor substrate and the cathode and a second insulating layer thickness between the semiconductor substrate and the anode, and wherein the first insulating layer thickness is less than the second insulating layer thickness,wherein a thickness of the cathode, measured in a direction substantially normal to a surface of the semiconductor substrate, is greater than a thickness of the anode, measured in the direction substantially normal to the surface of the semiconductor substrate.