Patent ID: 6885047
Filing Date: 2005-04-26
Classification: H01L

Abstract:
1. A solid-state image sensing device having a plurality of pixels, each pixel comprising: a photodiode that is constituted by a semiconductor region having a first conductivity type and a semiconductor region having a second conductivity type to generate signal charge, the first conductivity type and the second conductivity type being opposite to each other; a first transistor that has a drain region formed in the second-conductivity-type semiconductor region to transfer the signal charge to the drain region, the drain region having the first conductivity type; a second transistor that has a source region and a drain region which are formed in the second-conductivity-type semiconductor region, the source and drain regions having the first conductivity type, wherein at least one potential barrier having the second conductivity type is provided under the drain region of the first transistor and extends under the source region and the drain region of the second transistor.