Charge transfer device and its driving method for providing pote

Details Charge transfer device and its driving method for providing pote Charge transfer device and its driving method for providing pote

1990-07-06

1992-03-03

Miller, Stanley D.

Electrical pulse counters, pulse dividers, or shift registers: c

Charge transfer device

Particular input or output means

377 62, 377 63, 357 24, G11C 1928, H01L 2978

Patent

active

050938495

ABSTRACT:
A charge transfer device and its driving method are disclosed such that transfer pulses each having an ampitude substantially equal to that of transfer pulses applied to transfer electrodes at transfer stages before a plurality of successively-arranged transfer stages including a final transfer stage and DC offset levels so decreased gradually as to gradually make shallow the depth of potential wells formed under the transfer electrode toward the final transfer stage are applied to transfer electrode at successively-arranged plural transfer stages including the final stage. Further, a charge transfer device and its driving method are disclosed such that a transfer pulse having an amplitude substantially equal to that of transfer pulses applied to transfer electrodes at transfer stages before the final transfer stage and a DC offset voltage so biased as to allow the depth of potential well formed under the transfer electrodes at the final trnasfer stage to be shallower than that of potential wells formed under the transfer electrodes at the transfer stages before the final transfer stage is applied to the transfer electrode at the final transfer stage.

REFERENCES:
patent: 4242600 (1980-12-01), Hoffman et al.
patent: 4554675 (1985-11-01), Miwada
patent: 4603426 (1986-07-01), Sauer
patent: 4811371 (1989-03-01), Tower
patent: 4873562 (1989-10-01), Cazaux et al.
patent: 4878103 (1989-10-01), Cazaux et al.
patent: 4992842 (1991-02-01), Yang et al.

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