센서학회지 (Journal of Sensor Science and Technology)

  • 제30권1호
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  • Pages.61-65
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  • 2021
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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Gate/Body-Tied 구조의 고감도 광검출기를 이용한 2500 fps 고속 바이너리 CMOS 이미지센서

2500 fps High-Speed Binary CMOS Image Sensor Using Gate/Body-Tied Type High-Sensitivity Photodetector

  • 김상환 (경북대학교 전자전기공학부) ;
  • 권현우 (경북대학교 전자전기공학부) ;
  • 장준영 (경북대학교 전자전기공학부) ;
  • 김영모 (경북대학교 전자전기공학부) ;
  • 신장규 (경북대학교 전자전기공학부)
  • Kim, Sang-Hwan (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Kwen, Hyeunwoo (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Jang, Juneyoung (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Kim, Young-Mo (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Shin, Jang-Kyoo (School of Electronic and Electrical Engineering, Kyungpook National University)
  • 투고 : 2021.01.22
  • 심사 : 2021.01.30
  • 발행 : 2021.01.31
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초록

In this study, we propose a 2500 frame per second (fps) high-speed binary complementary metal oxide semiconductor (CMOS) image sensor using a gate/body-tied (GBT) p-channel metal oxide semiconductor field effect transistor-type high-speed photodetector. The GBT photodetector generates a photocurrent that is several hundred times larger than that of a conventional N+/P-substrate photodetector. By implementing an additional binary operation for the GBT photodetector with such high-sensitivity characteristics, a high-speed operation of approximately 2500 fps was confirmed through the output image. The circuit for binary operation was designed with a comparator and 1-bit memory. Therefore, the proposed binary CMOS image sensor does not require an additional analog-to-digital converter (ADC). The proposed 2500 fps high-speed operation binary CMOS image sensor was fabricated and measured using standard CMOS process.

키워드

참고문헌

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