Patent ID: 7482665

Claim:
A photo diode, comprising: a semiconductor substrate; a buried layer of a first conductivity type, a first epitaxial layer of the first conductivity type, and a second epitaxial layer of a second conductivity type sequentially provided on the semiconductor substrate; a partition layer of the first conductivity type on the second epitaxial layer; a doped shallow junction layer of the second conductivity type on adjacent sides of the partition layer; a layered structure comprising an oxide film pattern and a silicon nitride film pattern sequentially provided only on the doped shallow junction layer; an interlayer dielectric film and an inter-metal dielectric film provided on the silicon nitride film pattern to define a light receiving portion; and a dielectric film provided on the inter-metal dielectric film; wherein the dielectric film, the silicon nitride film pattern, and the oxide film pattern form a multi-layered anti-reflective coating.