An image sensor with in-pixel selective-charge-subtraction circuits for selective light detection

• Kim Unghyun

  Department of Electrical Engineering and Information Systems, Graduate School of Engineering, The University of Tokyo

• Ikeda Makoto

  Department of Electrical Engineering and Information Systems, Graduate School of Engineering, The University of Tokyo

抄録

In this paper, a CMOS Image Sensor (CIS) capable for in-pixel selective light detection and background light suppression is presented. The pixel circuit is composed of demodulation transistors and Adaptive Charge Unit (ACU), realizes in-pixel selective-charge-subtraction. Demodulation transistors are used for selective light detection. And ACU is used for background light subtraction to prevent saturation for wide dynamic range. The presented image sensor has been fabricated in 0.18-µm CMOS process and successfully tested, and it has a 64 × 64 pixel array. The minimum signal-to-background ratio (SBR) is −18.8 dB and the dynamic range is 89.3 dB.

収録刊行物

• IEICE Electronics Express

  IEICE Electronics Express 16 (4), 20181099-20181099, 2019

  一般社団法人 電子情報通信学会

キーワード

• modulated light
• image sensor
• background light suppression
• light-section method
• selective-signal detection

詳細情報

• CRID: 1390845713054258688
• NII論文ID: 130007604178
• DOI: 10.1587/elex.16.20181099
• ISSN: 13492543
• Web Site: https://www.jstage.jst.go.jp/article/elex/16/4/16_16.20181099/_pdf
• 本文言語コード: en
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