A CCD imager on three types of p-wells

A 488×590-elment interline-transfer CCD imager for the 2/3-inch formal is described. It employs three types of p-wells (shallow, medium, and deep) for smearing suppression as well as for blooming suppression. The shallow p-well incorporates the photodiodes and is completely depleted for blooming sup...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1985-05, Vol.24 (5), p.574-579
Main Authors: MIYATAKE, S, NAGAKAWA, T, MATSUI, O, AWANE, K, MISAWA, K, KOSAZA, H, SAKAMOTO, S, OGAWA, S.-I, FUJINO, K, YAMANO, T, IIKAWA, K, NAKAI, J.-I
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optical elements, devices, and systems
Optics
Physics
Scanners, image intensifiers, and image converters
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Summary:A 488×590-elment interline-transfer CCD imager for the 2/3-inch formal is described. It employs three types of p-wells (shallow, medium, and deep) for smearing suppression as well as for blooming suppression. The shallow p-well incorporates the photodiodes and is completely depleted for blooming suppression. The medium one does the CCD shift registers and also is completely depleted for smearing suppression. The deep one does the output circuitry and is not completely depleted for the stable MOS transistor operation. For 10-percent vertical-height illumination, the smear signal was as small as -73 dB of the illumination signal at a wavelength of 550 nm. Furthermore, this imager employs n + -n - -p photodiodes to reduce the change of spectral response with a storage of signal charge.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.24.574