| Paper Abstract and Keywords |
| Presentation |
2014-09-29 14:00
A Novel Curved CMOS Image Sensor Integrated with Imaging System
Takayuki Ezaki, Kazuichiro Itonaga (SONY), Toshiyuki Arimura, Keiji Matsumoto (Sony Oita), Goro Kondo (Sony Kumamoto), Kazuhide Terahata, Makimoto Shinsaku, Masakazu Baba, Yasunori Honda, Seigo Bori, Toru Kai, Keijyu Kasahara (Sony Oita), Mitsuhiro Nagano, Masayuki Kimura, Yoshinori Kimura (Sony Kumamoto) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We realized an ultimately advanced imaging system that comprises a hemi-spherically curved, back-illuminated
CMOS image sensor (BIS) and integrated lens which doubles the sensitivity at the edge of the image circle and increases the sensitivity at the center of the image circle by a factor of 1.4 with one-fifth lower dark current (Jd) than that of a planar BIS. Because the lens field curvature aberration (Afc) was overcome in principle by the curved sensor itself, the curved BIS enables higher system sensitivity through design of a brighter lens with a smaller F number (Fn) than is possible with a planar BIS. At the same time, we controlled the tensile stress of the BIS chip to produce a curved shape that widens the energy band-gap (Eg) to obtain a lower Jd. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Curve / CMOS Image Sensor / Back-illuminated / Front-illuminated / Low dark current / Stress / Imaging system / |
| Reference Info. |
ITE Tech. Rep., vol. 38, no. 37, IST2014-41, pp. 1-4, Sept. 2014. |
| Paper # |
IST2014-41 |
| Date of Issue |
2014-09-22 (IST) |
| ISSN |
Print edition: ISSN 1342-6893 |
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