Imaging element, imaging method and electronic apparatus
There is provided an imaging device including a pixel array section including pixel units two-dimensionally arranged in a matrix pattern, each pixel unit including a photoelectric converter, and a plurality of column signal lines disposed according to a first column of the pixel units. The imaging device further includes an analog to digital converter that is shared by the plurality of column signal lines.
1. A light detecting device, comprising:
a pixel array having a plurality of pixels arranged in columns and rows, the pixel array including:
a first pixel, wherein the first pixel includes a first transfer transistor; and
a second pixel, wherein the second pixel includes a second transfer transistor; and
a transfer signal supply unit, including:
a first amplifier, wherein the first amplifier is coupled to a gate of the first transfer transistor;
a second amplifier, wherein the second amplifier is coupled to a gate of the second transfer transistor;
a first capacitor, wherein the first amplifier is connected to a ground potential through the first capacitor; and
a second capacitor, wherein the second amplifier is connected to the ground potential through the second capacitor.
2. The light detecting device of claim 1 , wherein the transfer signal supply unit further includes:
a first charge pump, wherein the first charge pump is connected to a connection point of the first amplifier and the first capacitor; and
a second charge pump, wherein the second charge pump is connected to a connection point of the second amplifier and the second capacitor.
3. The light detecting device of claim 1 , wherein the first amplifier selectively supplies a transfer signal to the first pixel, and wherein the second amplifier selectively supplies a transfer signal to the second pixel.
4. The light detecting device of claim 1 , wherein the first pixel is a primary pixel and the second pixel is a secondary pixel.
5. The light detecting device of claim 1 , further comprising:
a first signal line coupled to the first pixel;
a second signal line coupled to the second pixel; and
a plurality of column signal processing circuits, wherein at least a first one of the plurality of column signal processing circuits includes a comparator coupled to the first signal line or the second signal line via switch circuitry, the comparator including:
a first transistor configured to receive a third signal according to a first signal;
a second transistor configured to receive a fourth signal according to a second signal; and
a third transistor configured to receive a reference signal.
6. The light detecting device of claim 5 , wherein the column signal processing circuits in the plurality of column signal processing circuits are disposed together.
7. The light detecting device of claim 5 , wherein the first signal line and the second signal line extend in a same direction.
8. The light detecting device of claim 5 , wherein the first column signal processing circuit further includes a counter.
9. An electronic apparatus, comprising:
an optical system including at least one lens; and
an imaging device, wherein light is directed to the imaging device by the optical system, the imaging device including:
a pixel array having a plurality of pixels arranged in columns and rows, the pixel array including:
a first pixel, wherein the first pixel includes a first transfer transistor; and
a second pixel, wherein the second pixel includes a second transfer transistor; and
a transfer signal supply unit, including:
a first amplifier, wherein the first amplifier is coupled to a gate of the first transfer transistor;
a second amplifier, wherein the second amplifier is coupled to a gate of the second transfer transistor;
a first capacitor, wherein the first amplifier is connected to a ground potential through the first capacitor; and
a second capacitor, wherein the second amplifier is connected to the ground potential through the second capacitor.
10. The electronic apparatus of claim 9 , wherein the transfer signal supply unit further includes:
a first charge pump, wherein the first charge pump is connected to a connection point of the first amplifier and the first capacitor; and
a second charge pump, wherein the second charge pump is connected to a connection point of the second amplifier and the second capacitor.
11. The electronic apparatus of claim 9 , wherein the first amplifier selectively supplies a transfer signal to the first pixel, and wherein the second amplifier selectively supplies a transfer signal to the second pixel.
12. The electronic apparatus of claim 9 , wherein the first pixel is a primary pixel and the second pixel is a secondary pixel.
13. The electronic apparatus of claim 9 , further comprising:
a first signal line coupled to the first pixel;
a second signal line coupled to the second pixel; and
a plurality of column signal processing circuits, wherein at least a first one of the plurality of column signal processing circuits includes a comparator coupled to the first signal line or the second signal line via switch circuitry, the comparator including:
a first transistor configured to receive a third signal according to a first signal;
a second transistor configured to receive a fourth signal according to a second signal; and
a third transistor configured to receive a reference signal.
14. The electronic apparatus of claim 13 , wherein the column signal processing circuits in the plurality of column signal processing circuits are disposed together.
15. The electronic apparatus of claim 13 , wherein the first signal line and the second signal line extend in a same direction.
16. The electronic apparatus of claim 13 , wherein the first column signal processing circuit further includes a counter.