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Detail
Registered IMAGE SENSOR FOR LOW-NOISE VOLTAGE OPERATION
- Inventors
- Cho Min-Hyung, 송영주, Kim Mi Jin, Bongki Mheen
- Application No.
- 11866698 (2007.10.03)
- Publication No.
- 20080093534 (2008.04.24)
- Registration No.
- 7554074 (2009.06.30)
- Country
- UNITED STATES
- Project Code
- 06MB2800, Silicon-based high-speed optical interconnection IC, Kim Gyungock
- Abstract
- An image sensor operated in a pseudo pinch-off condition capable of reducing a reset voltage of a photodiode and reducing a dark current and fixed pattern noise generated due to discordance of characteristics between pixels is presented. The image sensor has a photosensitive pixel, a driving circuit and an intermediary circuit. The photosensitive pixel can have a photodiode generating a photoelectrons, a transfer transistor transferring the photoelectrons to a diffusion node, and a reset transistor resetting the diffusion node. The driving circuit generates a driving switching signal with respect to the transfer and resist transistors. The intermediary circuit changes characteristics of the signal to drive the photosensitive pixel in a pseudo pinch-off mode.
- KSP Keywords
- Dark Current, Driving circuit, Fixed-pattern noise(FPN), Image Sensor, Low noise, Pattern noise, Pinch-off, Switching Signal, noise voltage