Imaging device, imaging system, and mobile apparatus

An imaging device comprising:

• a pixel array including a plurality of pixels that are arranged to form a plurality of rows and a plurality of columns, each of the plurality of pixels being configured to generate signals in accordance with an incident light;
• a first output line and a second output line that are arranged corresponding to each of the plurality of columns of the pixel array and configured to transmit signals output from the pixels arranged on a corresponding column;
• a scanning unit configured to drive the pixel array so as to output signals from at least two of the pixels arranged on different rows of a single column respectively to the first output line and the second output line;
• and
• an output line control unit configured to provide potentials that are different from each other to the first output line and the second output line, respectively in a test mode,
• wherein, in the test mode, the output line control unit controls a potential of at least one of the first output line and the second output line to be clipped at a predetermined potential.

An imaging device comprising:

• a pixel array including a plurality of pixels that are arranged to form a plurality of rows and a plurality of columns, each of the plurality of pixels being configured to generate signals in accordance with an incident light;
• a first output line and a second output line that are arranged corresponding to each of the plurality of columns of the pixel array and configured to transmit signals output from the pixels arranged on a corresponding column;
• a scanning unit configured to drive the pixel array so as to output signals from at least two of the pixels arranged on different rows of a single column respectively to the first output line and the second output line;
• an output line control unit configured to provide potentials that are different from each other to the first output line and the second output line, respectively in a test mode;
• and
• a short-circuit detection unit configured to detect a short-circuit between the first output line and the second output line based on at least one of a potential of the first output line and a potential of the second output line.

An imaging device comprising:

• a pixel array including a plurality of pixels that are arranged to form a plurality of rows and a plurality of columns, each of the plurality of pixels being configured to generate signals in accordance with an incident light;
• a first output line and a second output line that are arranged corresponding to each of the plurality of columns of the pixel array and configured to transmit signals output from the pixels arranged on a corresponding column;
• a scanning unit configured to drive the pixel array so as to output signals from at least two of the pixels arranged on different rows of a single column respectively to the first output line and the second output line;
• and
• an output line control unit configured to provide potentials that are different from each other to the first output line and the second output line, respectively, in a test mode,
• wherein each of the plurality of pixels included in the pixel array includes:
• a photoelectric conversion element configured to generate charges in accordance with the incident light by photoelectric conversion;
• a transfer transistor configured to transfer charges generated by the photoelectric conversion element;
• an amplification transistor having an input node to which charges are transferred from the photoelectric conversion element by the transfer transistor and configured to output a signal in accordance with a potential of the input node;
• and
• a reset transistor configured to reset the potential of the input node,
• wherein, in the test mode, the output line control unit controls the scanning unit to turn off the reset transistor of a pixel which outputs a signal to the first output line, maintain the reset transistor of a pixel to be turned on which outputs a signal to the second output line, and output a signal from the pixels with the input node being reset.

An imaging device comprising:

• a pixel array including a plurality of pixels that are arranged to form a plurality of rows and a plurality of columns, each of the plurality of pixels being configured to generate signals in accordance with an incident light;
• a first output line and a second output line that are arranged corresponding to each of the plurality of columns of the pixel array and configured to transmit signals output from the pixels arranged on a corresponding column;
• a scanning unit configured to drive the pixel array so as to output signals from at least two of the pixels arranged on different rows of a single column respectively to the first output line and the second output line;
• and
• an output line control unit configured to provide potentials that are different from each other to the first output line and the second output line, respectively, in a test mode,
• wherein each of the plurality of pixels included in the pixel array includes:
• a photoelectric conversion element configured to generate charges in accordance with the incident light by photoelectric conversion;
• a transfer transistor configured to transfer charges generated by the photoelectric conversion element;
• an amplification transistor having an input node to which charges are transferred from the photoelectric conversion element by the transfer transistor and configured to output a signal in accordance with a potential of the input node;
• and
• a reset transistor configured to reset the potential of the input node,
• wherein, in the test mode, the output line control unit controls the scanning unit to turn on the transfer transistor of a pixel which outputs a signal to the first output line and transfer charges, maintain the transfer transistor of a pixel to be turned off which outputs a signal to the second output line, and output a signal from the pixels with the input node being maintained in a reset state.