Patent ID: 9659988
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. An image pickup apparatus comprising: a plurality of pixels each having a first photoelectric conversion unit and a second photoelectric conversion unit, a floating diffusion, a first transfer transistor configured to transfer electric carriers from the first photoelectric conversion unit to the floating diffusion, a second transfer transistor configured to transfer electric carriers from the second photoelectric conversion unit to the floating diffusion, and an amplification transistor configured to amplify signals based on the electric carriers transferred to the floating diffusion; and a contact plug configured to supply a reference voltage to a semiconductor region serving as a channel region for the first transfer transistor, the second transfer transistor, and the amplification transistor, wherein during a period from a start of an accumulation period of electric carriers for the first photoelectric conversion unit and the second photoelectric conversion unit to an end of a reading period for which signals based on the electric carriers generated in the accumulation period of electric carriers are read to the outside of the pixel, a number of times an on-state voltage is supplied to a gate electrode of the first transfer transistor is larger than a number of times an on-state voltage is supplied to a gate electrode of the second transfer transistor, and among the plurality of pixels, in a pixel having a shortest distance from the gate electrode of the second transfer transistor to the contact plug, a distance from the gate electrode of the second transfer transistor to the contact plug is shorter than a distance from the gate electrode of the first transfer transistor to the contact plug.