| 摘要 |
A photodiode array includes a plurality of photodiodes formed in a semiconductor substrate. Each of the photodiodes includes a first semiconductor region of a first conductivity type, and provided in the semiconductor substrate, a second semiconductor region of a second conductivity type, provided with respect to the first semiconductor region on one surface side of the semiconductor substrate so as to surround a predetermined region, and constituting a light detection region together with the first semiconductor region, and a through-electrode provided within a through-hole passing through the one surface and the other surface of the semiconductor substrate so as to pass through the first semiconductor region and the predetermined region, and electrically connected to the second semiconductor region. The through-hole includes a portion expanded from the one surface toward the other surface. |
