A 1/2-in CCD imager with lateral overflow-gate shutter

Author

Ando, Haruhisa ; Nakai, Masaaki ; Akimoto, Hajime ; Ono, Hideyuki ; Ozawa, Naoki ; Ohba, Shinya ; Suzuki, Toshiki ; Uehara, Masao ; Hikiba, Masayuki

Author_Institution

Hitachi, Ltd., Tokyo, Japan

Volume

38

Issue

5

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

960

Lastpage

964

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

Keywords

CCD image sensors; 0.5 in; 1/2 format; 16666 to 63.7 mus; 327630 pixel; 4 V; 489 pixel; 670 pixel; CCD imager; complete charge transfer; design considerations; high definition imagers; interline-transfer; lateral overflow-gate shutter; microlens; overflow gate pulse; performance; self-aligned photodiode structure; shutter speed; small-die-size imagers; variable shutter function; Blanking; Cameras; Charge coupled devices; Electric variables control; Low voltage; Motion pictures; Pulse amplifiers; Signal resolution; Timing; Video recording;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.78365

Filename

78365