Electrical pulse counters – pulse dividers – or shift registers: c – Charge transfer device – Direction and/or path flow control
Patent
1985-08-23
1987-03-31
Munson, Gene M.
Electrical pulse counters, pulse dividers, or shift registers: c
Charge transfer device
Direction and/or path flow control
357 24, 357 51, 307200B, 361 56, 361111, G11C 1928, H01L 2978, H02H 904
Patent
active
046548653
ABSTRACT:
A CCD device includes a substrate, a gate insulating film formed on the surface of the semiconductor substrate, a plurality of charge transfer gate electrodes formed on the gate insulating film and divided for use into n groups of electrodes, a plurality of signal lines for electrically connecting a plurality of the transfer gate electrodes in each group of transfer gate electrodes for each integer number of electrodes, a plurality of clock signal lines to which a clock signal is applied, and a protective circuit for protecting a plurality of the gate insulating film against static electricity between the clock signal line and the signal line connected to the gate electrode. The CCD device can set a higher electrostatic withstanding voltage of the gate insulating film without reducing its clock operating speed. In addition, the CCD device allows no localized heating to be produced in the CCD IC chip because a protective resistor of the protective circuit is dispersed and arranged in the chip, thus reducing variations in the dark current.
REFERENCES:
patent: 4456939 (1984-06-01), Ozaki
Oshima Mitsuo
Sunazuka Makoto
Munson Gene M.
OKI Electric Industry Co., Ltd.
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