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Amorphous Silicon Thin Film Transistor Array Technology: Applications in Printing and Document Scanning

Published online by Cambridge University Press:  26 February 2011

R. L. Weisfield ,
H. C. Tuan ,
L. Fennell  and
M. J. Thompson
R. L. Weisfield
Affiliation:
Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304
H. C. Tuan
Affiliation:
Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304
L. Fennell
Affiliation:
Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304
M. J. Thompson
Affiliation:
Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304
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Abstract

Amorphous silicon (a-Si:H) thin-film transistor (TFT) array technology has been developed for new applications in low-cost, high-quality electronic printing. We have fabricated page-wide arrays of low-voltage pass transistors using a-Si:H TFTs for ionographic printing, in which voltages of 0 to 15 volts applied to a line of output electrodes modulate the flow of ions charging a dielectric receptor. High-voltage a-Si:H TFTs have been used in an electrographic printer to modulate high voltages required to initiate air discharges. Combining a-Si:H photodiodes on TFT arrays, we have also designed circuits for document scanning and photosensor amplifiers. TFT performance in relation to these novel printer and sensor applications will be discussed. Issues related to process integration, circuit design, and large-area fabrication technology will be addressed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 95: Symposium E – Amorphous Silicon Semiconductors--Pure and Hydrogenated , 1987 , 469
Copyright
Copyright © Materials Research Society 1987

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References

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