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Page Sized a-Si:H 2-Dimensional Imaging Arrays

Published online by Cambridge University Press:  01 January 1993

R.A. Street ,
R. Weisfield ,
S. Nelson ,
P. Nylen  and
X.D. Wu
R.A. Street
Affiliation:
Xerox Palo Alto Research Center, Palo Alto, CA 94304
R. Weisfield
Affiliation:
Xerox Palo Alto Research Center, Palo Alto, CA 94304
S. Nelson
Affiliation:
Xerox Palo Alto Research Center, Palo Alto, CA 94304
P. Nylen
Affiliation:
University of Stockholm, Sweden
X.D. Wu
Affiliation:
Xerox Palo Alto Research Center, Palo Alto, CA 94304
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Abstract

The first page-sized a-Si:H sensor array intended for use as a contact imager is described. The array collects light very efficiently, making it well suited to high speed document input and medical x-ray imaging (by the addition of a phosphor). The array structure, control electronics and imaging properties are discussed. Data is presented from a 13" diagonal array with 512⋗560 pixels of size 0.45 mm, although the technology is capable of higher resolution. The image is read-out using 8 ICs containing 64 voltage sensitive amplifiers. The intrinsic dynamic range of the imaging array is about 105, but is limited to <1000 by the read-out amplifiers. The minimum read-out time of about 25 msec allows real time imaging.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 297: Symposium A – Amorphous Silicon Technology - 1993 , 1993 , 957
Copyright
Copyright © Materials Research Society 1993

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References

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