Semiconductor device

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

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Details

257315, 257323, 257435, 257443, 257458, 257461, H01L 3100

Patent

active

060283351

ABSTRACT:
A semiconductor device includes first and second elements, a light-shielding member, and a comparator. The first and second elements are formed on the same substrate, change in electrical characteristics upon irradiation of ultraviolet rays, and hold the changed states. The first element has the same arrangement as that of the second element. The light-shielding member is formed on the first element to shield ultraviolet rays. The comparator compares the electrical characteristics of the first and second elements and outputs an abnormality detection signal on the basis of the comparison results.

REFERENCES:
patent: 4935702 (1990-06-01), Mead et al.
patent: 5070378 (1991-12-01), Yamagata et al.
patent: 5592004 (1997-01-01), Tamura et al.
patent: 5656521 (1997-08-01), Hamilton et al.
patent: 5737281 (1998-04-01), Takeda et al.

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