Integrated circuit device

Details Integrated circuit device Integrated circuit device

1988-10-25

1990-02-20

Carroll, J.

Static information storage and retrieval

Magnetic bubbles

Guide structure

365 96, 365200, 3072021, H01L 2702, G11C 1700, H02H 0720

Patent

active

049031112

ABSTRACT:
A semiconductor integrated circuit device having a fuse-blown type ROM for storing information concerning defective bits for the replacement of defective bits in a semiconductor memory device, etc., with redundant bits. The integrated circuit device comprises fuses for constituting the ROM, pads for supplying a melting current to the fuses, and PN junctions each being formed, for example, by a semiconductor substrate and a diffusion layer formed on the semiconductor substrate. Each of the fuses is melted by applying voltage to a circuit connecting the PN junction, the fuse, and the pad so that the PN junction is forward biased, thereby supplying a large current to the fuse.

REFERENCES:
patent: 4045310 (1977-08-01), Jones et al.
patent: 4210875 (1980-07-01), Beasom
patent: 4417154 (1983-11-01), Kuo
patent: 4446475 (1984-05-01), Gercekci et al.
patent: 4446534 (1984-05-01), Smith
patent: 4605872 (1986-08-01), Rung
IBM Technical Disclosure Bulletin, vol. 19, No. 4, Sep. 1976, "Monolithic Integrated Circuit Fuse Link", B. J. Deliduka et al., p. 1161.

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