Charge detection circuit for use in charge transfer device

Details Charge detection circuit for use in charge transfer device Charge detection circuit for use in charge transfer device

1991-05-08

1992-12-22

Prenty, Mark V.

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Charge transfer device

257225, 257239, 257245, H01L 2978, H01L 2714, H01L 2702

Patent

active

051737574

ABSTRACT:
A charge transfer device includes a pair of charge transfer registers which receive signal charges from a photo sensor cell array and which transfer the received signal charges in the same direction along the charge tranfer registers, and a floating diffusion type charge reading section for reading the signal charges alternately from final stages of the pair of charge transfer registers. A signal charge detection circuit includes an output gate assembly provided between the final stage of each of the pair of charge transfer registers and a floating diffusion. A reading circuit operates to cause the signal charges alternately read from the final stages of the pair of charge transfer registers, to flow through a single channel under formed the output gate assembly, into the floating diffusion. An electric field is formed in the channel formed under the output gate assembly, so as to forcibly guide the signal charge from the final stage of each of the pair of charge transfer registers to the floating diffusion.

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