Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Passive components in ics
Patent
1997-04-21
1999-09-28
Fahmy, Wael M.
Active solid-state devices (e.g., transistors, solid-state diode
Integrated circuit structure with electrically isolated...
Passive components in ics
257537, 257538, H01L 2900
Patent
active
059593431
ABSTRACT:
A semiconductor device comprises a reference voltage device for outputting a constant voltage, a voltage dividing device receptive of the constant voltage for dividing the constant voltage and outputting different currents, a digital signal processing device receptive of the different currents outputted by the voltage dividing device and outputting voltages, and a voltage amplifying device receptive of at least a ground voltage and one of the voltages outputted by the digital signal processing device and outputting a signal produced by amplifying the voltage of the digital signal processing device. The voltage dividing device comprises a ladder resistor circuit having a substrate, an insulating film disposed on the substrate, a first polycrystal silicon film disposed on the insulating film, an interlayer insulating film disposed on the first polycrystal silicon film, and a second polycrystal silicon film disposed on the interlayer insulating film and electrically connected to the first polycrystal silicon film.
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patent: 5254497 (1993-10-01), Liu
Harada Hirofumi
Saitoh Yutaka
Fahmy Wael M.
Seiko Instruments R&D Center Inc.
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