Method for increasing the yield of batch processed microcircuit

Gas separation: apparatus – Electric field separation apparatus – Electrode cleaner – apparatus part flusher – discharger – or...

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96 27R, 96 36, 96 362, 96 384, 96 44, 29574, 29575, 29407, 156626, 156901, 427 8, 356389, G03C 500, G03C 504

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041314727

ABSTRACT:
An improvement in the process of manufacturing integrated circuits to enhance the yield, including the steps of tracking which of the individual dies on a photomask or related series of photomasks has produced a predominance of defective chips on the semiconductor wafer, then correcting the die images on the master photomasks and then producing new working masks. This procedure may be repeated several times, each time reducing the number of defect-bearing die images on the photomask and thereby providing a means by which a semiconductor device manufacturer can obtain better yields.

REFERENCES:
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patent: 3607267 (1971-09-01), Garrels
patent: 3615463 (1971-10-01), Kuschell
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patent: 3855023 (1974-12-01), Spicer et al.
patent: 4037969 (1977-07-01), Feldman et al.
Kaplan, "A Microprocessor-Controlled Mask Inspection and Repair System", Solid State Technology, Apr. 1976, pp. 74-78.

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