Thin-film semiconductor device with field plate

Active solid-state devices (e.g. – transistors – solid-state diode – Non-single crystal – or recrystallized – semiconductor... – Field effect device in non-single crystal – or...

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257 59, 257488, H01L 2978, H01L 2712

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active

053671805

ABSTRACT:
The invention is based on a thin-film semiconductor FET device. A field plate electrode for producing an electric field is formed on a channel-protecting film above the end of the gate electrode that is on the side of an offset region. Stable transistor characteristics can be maintained for a long time with the field plate electrode voltage set to a low value. The drain electrode is coated with a film of an anticorrosion metal. Where an integrated circuit with a high device density is fabricated from semiconductor devices of this construction, the drain electrodes are effectively prevented from being corroded.

REFERENCES:
patent: 4797108 (1989-01-01), Crowther
patent: 4885616 (1989-12-01), Ohta
patent: 4958205 (1990-09-01), Takeda et al.
patent: 5017984 (1991-05-01), Tanaka
Ratnam, Electronics Letts Apr. 13, 1989 vol. 25 No. 8 pp. 537-538 "Noval Silicon-on Insulator . . . Circuits".
Hack, M. et al., "Physics of Novel Amorphous Silicon High-Voltage Transistor", Mat. Res. Soc. Symp. Proc., vol. 95, pp. 457-462.
Martin, R. A. et al., "Enhancement of Performance and Reliability of Amorphous Silicon High Voltage Thin Film Transistors by use of Field Plates", IEEE, IEDM 89-341, pp. 13.2.1-13.2.4.

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