Optical device

摘要

An optical device includes a first region and an isolating layer which are each provided in a semiconductor substrate. The first region configures a photoelectric converter and includes at least an impurity of a first conductivity type. The isolating layer is configured to inhibit passage of electrons. The isolating layer includes a second region which is below the first region and which includes an impurity of a second conductivity type, a third region which surrounds the first region in plan-view thereof and which includes an impurity of the second conductivity type, and a fourth region which surrounds the second region in plan-view thereof and which is connected to the third region. The fourth region is greater in width than a connecting part of the third region which connects the third region to the fourth region.

主权项

1. An optical device comprising:
a first region provided in a semiconductor substrate and configuring a photoelectric converter, the first region including at least an impurity of a first conductivity type; and an isolating layer provided in the semiconductor substrate and configured to inhibit passage of electrons, wherein the isolating layer includes:
a second region below the first region and including an impurity of a second conductivity type;a third region surrounding the first region in plan-view thereof and including an impurity of the second conductivity type; anda fourth region surrounding the second region in plan-view thereof and connected to the third region, and the fourth region is greater in width than a connecting part of the third region which connects the third region to the fourth region.