Abstract
The design considerations and performance of an interline-transfer charge-coupled-device (IL-CCD) imager with a lateral overflow gate shutter are described. A 489(V)-pixel*670(H)-pixel 1/2-in IL-CCD imager is shown to have a variable shutter function, whose shutter speed is controlled successively from 1/60 to 1/15700 s by the timing of the overflow gate pulse. The device requires a low voltage of only 4 V and a simple overflow gate pulse to realize the shutter function without any undesirable die size enlargement. The key technology of the device is the self-aligned photodiode structure, which realizes a complete charge transfer. Combined with a microlens on the photodiode, the device can achieve high-definition or small-die-size imagers because of its high sensitivity.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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