Patent ID: 8575662

Claim:
A solid state imaging device including one or multiple pixels, each of the pixels comprising: a first semiconductor layer formed on a substrate, a second semiconductor layer formed on the first semiconductor layer, a first insulating film formed on a lower side of the second semiconductor layer, a gate conductor layer formed on the lower side of the second semiconductor layer via the first insulating film, a third semiconductor layer formed in an upper side of the second semiconductor layer, a fourth semiconductor layer formed on a side of the third semiconductor layer that is not facing a side of the second semiconductor layer, and a fifth semiconductor layer formed on top of the second semiconductor layer and the third semiconductor layer, the fifth semiconductor layer electrically connected to the fourth semiconductor layer, wherein at least the third semiconductor layer, the upper region of the second semiconductor layer where the third semiconductor layer is formed, the fourth semiconductor layer, and the fifth semiconductor layer are formed in an island, a diode comprises the second semiconductor layer and the third semiconductor layer, a junction transistor comprises the diode serving as a gate thereof and the second semiconductor layer serving as a channel thereof, the channel being between the first semiconductor layer and the fifth semiconductor layer, a MOS transistor comprises the gate semiconductor layer serving as a gate thereof and the second semiconductor layer serving as a channel thereof, the channel being between the first semiconductor layer and the third semiconductor layer, a signal charge generated by an electromagnetic energy wave is accumulated in the diode, current flowing to the junction transistor and changing in accordance with amount of the signal charge accumulated in the diode is detected as a signal, the signal charge accumulated in the diode is removed at the first semiconductor layer through the MOS transistor channel, the fourth semiconductor layer and the fifth semiconductor layer have same voltage.