Patent ID: 7723766
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A solid-state image sensing device having a plurality of pixels, each pixel comprising: a first semiconductor region of a first conductivity type; a second semiconductor region of a second conductivity type opposite to the first conductivity type, the second semiconductor region constituting a PN junction with the first semiconductor region and functioning as a part of a photodiode; and an element isolation region having an insulating film in a trench; a third semiconductor region of the first conductivity type disposed on a side wall of the element isolation region; a fourth semiconductor region of the first conductivity type disposed under the element isolation region; a fifth semiconductor region of the second conductivity type having an impurity concentration higher than that of the second semiconductor region and disposed at a depth shallower than that of the second semiconductor region with respect to the light receiving surface, said fifth semiconductor region functioning as an accumulation part of the photodiode; a transistor of the second conductivity type in which the fifth semiconductor region functions as a source region or a drain region, a sixth semiconductor region of the first conductivity type disposed within the second semiconductor region directly under a gate electrode of the transistor in the direction of depth apart from a channel formed under the gate electrode, and