Browse Prior Art Database

Monolithic Integrated Circuit Fuse Link

IP.com Disclosure Number: IPCOM000086394D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Deliduka, BJ: AUTHOR [+4]

Abstract

In the manufacture of integrated circuits it is often desirable to connect a thin dielectric capacitor to a protect diode, as illustrated in Fig. 2. This is especially so where the circuit is a series of isolated storage capacitors.

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Monolithic Integrated Circuit Fuse Link

In the manufacture of integrated circuits it is often desirable to connect a thin dielectric capacitor to a protect diode, as illustrated in Fig. 2. This is especially so where the circuit is a series of isolated storage capacitors.

The purpose of using a fuse link is to keep two parts of an electrical circuit connected together until it is desired to segregate the elements. The circuit (Fig.
2) will bleedoff excess charge (above the breakdown voltage of the diode) that may accumulate on the capacitor during passivation processing and handling.

During the etch step of a second level metalization on the device, the fuse link will be automatically removed, thereby separating the protect diode from the capacitor and the remainder of the integrated circuit. If the fuse link is not removed, an additional contact pad is provided so that the fuse can be blown and the separation accomplished.

Fig. 1 illustrates at 3, the isolation surrounding the integrated circuit and the hole 2 through the passivation layer 4. The metal fuse section 1 is capable of being blown, if necessary.

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