Patent ID: 8217330
Filing Date: 2012-07-10
Classification: H01L

Abstract:
1. An apparatus comprising: a pixel region having disposed therein in a matrix form unit cells including a plurality of conversion components, an amplifier transistor which amplifies a signal based on signal charges occurring in the plurality of conversion components, a reset transistor which sets a potential of an input portion of the amplifier transistor to a reset potential, and a select transistor which is connected in series to the amplifier transistor and selects and reads the amplified signal; and a plurality of well contact regions which are provided within the pixel region and supply a reference voltage to a well providing a channel part of the amplifier transistor, the reset transistor and the select transistor, wherein each of the well contact regions is neighboring to a drain region of the reset transistor through an isolation region having a channel stop region under the isolation region; and at least one of a source region and a drain region of the reset transistor has a lower impurity concentration than the impurity concentration in a source region and a drain region of the select transistor.