Patent ID: 7564018
Filing Date: 2009-07-21
Classification: H01L

Abstract:
1. An image sensor comprising: a first active region and a second active region formed in a substrate, the first active region and the second active region spatially isolated from each other; a first group of photoelectric conversion elements formed in the first active region and a second group of photoelectric conversion elements formed in the second active region; a first floating diffusion region formed in the first active region and a second floating diffusion region formed in the second active region, the first floating diffusion region and the second floating diffusion region connected to an interconnect layer; a first group of transmission elements transmitting charges accumulated in the first group of photoelectric conversion elements to the first floating diffusion region; a second group of transmission elements transmitting charges accumulated in the second group of photoelectric conversion elements to the second floating diffusion region; a plurality of readout elements configured to read charges transmitted from the first floating diffusion region or the second floating diffusion region; and at least one dummy gate group including at least one dummy gate arrayed substantially parallel to at least one readout gate of the plurality of readout elements.