Publications by authors named "Masaki Tamaru"
Sensors (Basel)
August 2024
Article Synopsis
- The study introduces robust design methods for a vertical avalanche photodiode-based CMOS image sensor, focusing on three practical factors: eliminating guard rings for better pixel isolation, ensuring device performance is stable regardless of voltage and temperature changes, and maintaining consistent operation under intense light conditions.
- The design minimizes trade-offs between electric field concentration and pixel isolation, validated through both simulations and experiments, resulting in effective optimization strategies.
- A global feedback resistor is used to stabilize device characteristics, while an in-pixel overflow transistor improves resistance to high illumination; the sensor's robustness is confirmed by extensive testing on multiple chips under extreme conditions for over 1000 hours.
