Image Sensors

MST Provides a Toolkit to Improve Image Sensors

Pixel Transistor Enhancement by MST

4T Active Pixel Sensor
Transistor Type
Transfer Gate (TG)
Source Follower (SF)
Source Follower (SF) Reset gate (RG)
Performance Enhancement by MST
MST can reduce surface doping and thus reduce leakage associated with Gate Induced Drain Leakage (GIDL) and Trap-Assisted Tunneling (TAT) mechanisms
MST can reduce gate leakage by ~50% and also enhance source follower gain by increasing transistor Gm
MST can reduce Vt variability via formation of SSR channel profiles and thus improve Fixed Pattern Noise (FPN)