1. An image sensor device, comprising: a substrate; an array of image pixels, each image pixel of the array configured for sensing light incident on the pixel, wherein each image pixel of the array comprises a photosensitive area within a p−type region for accumulating photo-generated charges within the photosensitive area, wherein the p−type region is formed on the substrate; and a plurality of ground contacts operably coupled to the p−type region, wherein at least some ground contacts of the plurality are shared between at least two image pixels of the array.