SOLID-STATE IMAGE PICKUP ELEMENT, AND IMAGE PICKUP SYSTEM

摘要

Provided is a solid-state image pickup element including: a plurality of pixels arranged in a pixel well region; a readout circuit arranged in a peripheral well region, having a first input terminal for receiving the pixel signals from the plurality of pixels and a second input terminal for receiving a reference signal; and a reference signal circuit arranged in the peripheral well region, having a first electrode to which a ground voltage is supplied, and being configured to output the reference signal to the second input terminal of the readout circuit, wherein a resistance value R1 of an electrical path from one of a plurality of pixel well contacts to the first electrode and a resistance value R2 of an electrical path from one of a plurality of peripheral well contacts closest to the first electrode to the first electrode satisfy a relationship of R1

主权项

1. A solid-state image pickup element, comprising:
a semiconductor substrate including a pixel well region and a peripheral well region; a pixel ground wiring arranged on the pixel well region; a peripheral ground wiring arranged on the peripheral well region; a plurality of pixel well contacts connecting the pixel ground wiring and the pixel well region; a plurality of peripheral well contacts connecting the peripheral ground wiring and the peripheral well region; a plurality of pixels arranged in the pixel well region in a plurality of columns, each of the plurality of pixels being configured to output a pixel signal; a readout circuit arranged in the peripheral well region, the readout circuit including a first input terminal configured to receive the pixel signal from each of the plurality of pixels and a second input terminal configured to receive a reference signal; a reference signal circuit arranged in the peripheral well region, the reference signal circuit including a first electrode to which a ground voltage is supplied, and being configured to output the reference signal to the second input terminal of the readout circuit; and a wiring connecting the first electrode of the reference signal circuit and the pixel ground wiring, wherein a resistance value R1 of an electrical path from one of the plurality of pixel well contacts to the first electrode and a resistance value R2 of an electrical path from one of the plurality of peripheral well contacts closest to the first electrode to the first electrode satisfy a relationship of R1