Patent ID: 8704923
Filing Date: 2014-04-22
Classification: H01L,H04N

Abstract:
1. A solid-state imager, comprising: a pixel area that converts incident light into an electrical signal; a substrate bearing the pixel area formed thereon; an analog-to-digital converter, formed on the substrate, for converting a signal read from the pixel area into a digital signal; an optical communication circuit, arranged on the bottom surface of the substrate opposite the top surface of the substrate bearing the pixel area receiving the incident light, that converts the digital signal, converted by the analog-to-digital converter, into a light signal and outputs the light signal; a signal line for transferring the digital signal, converted by the analog-to-digital converter, to the optical communication circuit arranged on the bottom surface of the substrate, wherein the optical communication circuit is arranged, on a peripheral area on the bottom surface of the substrate, right below the analog-to-digital converter and is connected to the analog-to-digital converter via the signal line; and a light blocker arranged between the optical communication circuit and the substrate and configured to block light of an oscillation wavelength of the optical communication circuit.