It is to be noted that the pixel structure shown in FIG. 10 enables the control unit 4 to execute processing through which signals are individually and separately read out from the plurality of photoelectric conversion units in each pixel (third control mode). In this mode, the vertical control unit 70 sets the transistor M8 constituting the addition switch unit 18 in an OFF state and also sets the transistor constituting the coupling switch unit 19 in an OFF state. An electric charge resulting from photoelectric conversion in the first photoelectric conversion unit 11a is transferred to the first FD 14a by the first transfer unit 12a. Then, a pixel signal corresponding to the electric charge transferred to the first FD 14a is read out via the first amplifier unit 15a and the first selection unit 16, to the first vertical signal line VL1. In addition, an electric charge resulting from photoelectric conversion in the second photoelectric conversion unit 11b is transferred to the second FD 14b by the second transfer unit 12b. A pixel signal corresponding to the electric charge transferred to the second FD 14b is read out via the second amplifier unit 15b and the second selection unit 17 to the second vertical signal line VL2.
Variation 2
In the embodiments described above, the photoelectric conversion units are each constituted with a photodiode. As an alternative, photoelectric conversion units each constituted with a photoelectric conversion film may be used.
Variation 3
