Solid-state imager

Details Solid-state imager Solid-state imager

1989-10-12

1991-09-10

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821313, 35821319, 357 24LR, 377 57, H04N 314, H04N 5335, H01L 2978

Patent

active

050478621

ABSTRACT:
A solid-state imager comprising a substrate of a semiconductor material of one conductivity type having a major surface. A plurality of photodetectors are in the substrate and are arranged in an array of rows and columns. A separate CCD shift register is in the substrate along each column of the photodetectors and between adjacent columns of the photodetectors. Each shift register includes gates which can be operated to selectively transfer charge carriers from the photoconductors in the column at one side thereof into the shift register. A separate drain is adjacent each photodetector and the shift register adjacent the other side of the column of photodetectors. An anti-blooming barrier is provided between each drain and its adjacent photodetector. An exposure control barrier is provided between each drain and the shift register at the opposite side of the column of photodetectors. The shift register is adapted to be operated to selectively reset the photodetectors at the one side thereof by transferring the charge carriers from the photodetectors into and across the shift register to the drain adjacent the other side thereof.

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