{
  "$type": "site.standard.document",
  "description": "An optical detection apparatus includes a trench isolation portion provided in a substrate and disposed between a plurality of photoelectric conversion elements. Each of the plurality of photoelectric conversion elements includes an avalanche diode. The avalanche diode includes a first…",
  "path": "/patents/1309539",
  "publishedAt": "2022-01-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01S7/4863",
    "CANON KABUSHIKI KAISHA"
  ],
  "textContent": "An optical detection apparatus includes a trench isolation portion provided in a substrate and disposed between a plurality of photoelectric conversion elements. Each of the plurality of photoelectric conversion elements includes an avalanche diode. The avalanche diode includes a first semiconductor region of a first conductivity type, a second semiconductor region of a second conductivity type, and a third semiconductor region having an impurity concentration lower than impurity concentrations of the first and second semiconductor regions. The trench isolation portion includes a conductor and an insulator disposed between the conductor and the avalanche diode, and on a sidewall of the trench isolation portion, a second conductivity type layer is formed in which charges of the second conductivity type are accumulated, and the second conductivity type layer and the second semiconductor region are in contact with each other.",
  "title": "OPTICAL DETECTION APPARATUS AND OPTICAL DETECTION SYSTEM"
}