| Paper Abstract and Keywords |
| Presentation |
2026-09-25 16:30
A Study on SNR Improvement Using Supernatant Electron Detection for CMOS Image Sensors
Ten Hongo, Kazuya Aota, Takezou Mawaki, Ken Miyauchi, Rihito Kuroda (Tohoku Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This work proposes a novel readout technique for accurately detecting high-saturation signals. Achieving an extremely high signal-to-noise ratio (SNR) exceeding 70 dB requires not only an increase in the saturation electron capacity but also an expansion of the signal voltage range and a reduction in the random noise of the readout circuitry. In the proposed supernatant electron detection technique, the incident light intensity is measured by transferring the supernatant of the signal electrons stored in the large capacitor to the small capacitor with high charge-to-voltage conversion gain. To demonstrate the operating principle, a chip containing a single pixel was designed. The measurement results confirmed a linear signal output with incident light intensity and a maximum SNR of 72.2 dB. Future work will focus on optimizing the pixel structure and subsequently developing an array sensor to acquire two-dimensional images with a high SNR. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
CMOS image sensor / SNR / Readout noise / Linear response / Supernatant electron detection / / / |
| Reference Info. |
ITE Tech. Rep., vol. 50, no. 28, IST2026-45, pp. 27-30, Sept. 2026. |
| Paper # |
IST2026-45 |
| Date of Issue |
2026-09-18 (IST) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
IST |
| Conference Date |
2026-09-25 - 2026-09-25 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IST |
| Conference Code |
2026-09-IST |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Study on SNR Improvement Using Supernatant Electron Detection for CMOS Image Sensors |
| Sub Title (in English) |
|
| Keyword(1) |
CMOS image sensor |
| Keyword(2) |
SNR |
| Keyword(3) |
Readout noise |
| Keyword(4) |
Linear response |
| Keyword(5) |
Supernatant electron detection |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Ten Hongo |
| 1st Author's Affiliation |
Tohoku University (Tohoku Univ.) |
| 2nd Author's Name |
Kazuya Aota |
| 2nd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
| 3rd Author's Name |
Takezou Mawaki |
| 3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
| 4th Author's Name |
Ken Miyauchi |
| 4th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
| 5th Author's Name |
Rihito Kuroda |
| 5th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2026-09-25 16:30:00 |
| Presentation Time |
25 minutes |
| Registration for |
IST |
| Paper # |
IST2026-45 |
| Volume (vol) |
vol.50 |
| Number (no) |
no.28 |
| Page |
pp.27-30 |
| #Pages |
4 |
| Date of Issue |
2026-09-18 (IST) |