Solid state imager which reduces the noise and improves the sens

Details Solid state imager which reduces the noise and improves the sens Solid state imager which reduces the noise and improves the sens

1991-10-15

1993-02-16

Goldstein, Herbert

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821311, 35821329, H04N 5335

Patent

active

051875837

ABSTRACT:
A solid state imager of an amplifying type having an amplifying element for each photo receptor portion, wherein a noise cancelling unit is provided for the amplified output of each photo receptor portion at every vertical line so as to decrease noises, and further the solid state imager is configured to be the rear-illuminated structure, so that the sensitivity of the solid state imager can be improved due to the reduction of the noises and the numerical aperture thereof can be also improved. The solid state imager comprises photo receptor portions each provided for each of a plurality of pixels arranged in a matrix configuration in the horizontal and vertical directions and each having an amplifying element provided on a major surface side of a substrate for amplifying a signal charge accumulated depending on the quantity of light incident thereon, the incident light being radiated on a rear surface side of the substrate, a noise cancelling unit provided for each vertical line for cancelling noise included in the output, first and second signal holding units for holding during a horizontal blanking period amplified outputs of the photo receptor portions of two pixels adjacent to each other in the vertical direction passed through the noise cancelling unit, and a signal reading unit for independently reading outputs of the first and second signal holding units.

REFERENCES:
patent: 4809075 (1989-02-01), Akimoto et al.
patent: 4810896 (1989-03-01), Tanaka et al.
patent: 4914519 (1990-04-01), Hashimoto et al.
patent: 4942474 (1990-07-01), Akimoto et al.
patent: 5005063 (1991-04-01), Janesick
Japanese Patent Abstracts, vol. 12, No. 308 E647, Aug. 22, 1988 Publication No. JP63076367.

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