Patent ID: 9496308
Filing Date: 2016-11-15
CPC Classification: H01L,H04H,H04W

Claim Text:
1. A backside-illuminated photosensitive image device, comprising: a semiconductor substrate having multiple doped regions forming at least one junction; a textured region coupled to the semiconductor substrate and positioned such that incoming electromagnetic radiation passes through the semiconductor substrate before contacting the textured region, wherein the textured region interacts with the electromagnetic radiation so as to redirect at least a portion of the electromagnetic radiation back into the semiconductor substrate, a dielectric region positioned between the textured region and the at least one junction, the dielectric region being positioned to isolate the at least one junction from the textured region, a reflecting region coupled to the textured region for reflecting electromagnetic radiation passing through the textured region back to the textured region, wherein the textured region is disposed between the dielectric region and the reflecting region, and an electrical transfer element coupled to the semiconductor substrate and operable to transfer an electrical signal from the at least one junction.