Patent ID: 6049118
Filing Date: 2000-04-11
Classification: H01L

Abstract:
A circuit built-in light-receiving element comprising:a buried diffusion layer of a second conductivity type formed in a first region on a substrate of a first conductivity type;a buried diffusion layer of the first conductivity type selectively formed in said buried diffusion layer of the second conductivity type;an epitaxial layer of the second conductivity type formed on said buried diffusion layer of the first conductivity type, said buried diffusion layer of the first conductivity type and said epitaxial layer of the second conductivity type constituting a light-receiving element;a diffusion layer of the first conductivity type which reaches said buried diffusion layer of the first conductivity type through said epitaxial layer of the second conductivity type; anda signal processing circuit element formed in a second region on said substrate of the first conductivity type.