Method of repairing shorts in parallel connected vertical semico

Details Method of repairing shorts in parallel connected vertical semico Method of repairing shorts in parallel connected vertical semico

1983-03-15

1984-12-18

Roy, Upendra

Metal working

Method of mechanical manufacture

Assembling or joining

29571, 148 15, 148187, 204 15, H01L 2176, H01L 2100, B05D 512

Patent

active

044883498

ABSTRACT:
A method of repairing shorts in parallel connected vertical semiconductor devices including a plurality of parallel-connected transistors comprises an anodizing step, before the electrodes are formed, in addition to the conventional manufacturing steps. Since defective semiconductor regions due to short circuit, poor withstand voltage or pin holes are insulated from the corresponding electrodes by an insulating material formed in the anodizing step, even if any of parallel-connected transistors are defective, the integrated circuit is usable, thus reducing the percentage of defectiveness of the vertical semiconductor devices in the assembly line production thereof.

REFERENCES:
patent: 3851245 (1974-11-01), Baker et al.
patent: 4104090 (1978-08-01), Pogge
patent: 4119993 (1978-10-01), Hartnagel
patent: 4158613 (1979-06-01), Sogo
patent: 4242791 (1981-01-01), Horng et al.
patent: 4393577 (1983-07-01), Imai
patent: 4420497 (1983-12-01), Tickle
Bhattacharyya, IBM-TDB, 15 (1973) 3445.

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