Patent ID: 8154640

Claim:
A sub-pixel of an image sensor, the sub-pixel comprising: a plurality of floating body transistors, each floating body transistor including, a floating body region arranged between a source region and a drain region in a semiconductor layer on an insulating layer, the floating body region being configured to generate electron-hole pairs in response to received light, discharge the electrons through at least one of the source region and the drain region, and accumulate the holes in the floating body region, the accumulated holes being indicative of a first current state, and the first current state being representative of a first information type, the floating body region being further configured to discharge the holes to at least one of the source region and the drain region in response to a voltage applied to at least one of the source region and the drain region to enter a second current state, the second current state being representative of a second information type; wherein the source region and the drain region are formed at only surface portions of the semiconductor layer.