Image sensors and methods of manufacturing image sensors

An image sensor comprising:

• a first substrate including a driving element;
• a first insulation layer on the first substrate and on the driving element;
• a second substrate including a photoelectric conversion element;
• a second insulation layer on the second substrate and on the photoelectric conversion element, wherein a surface of the second insulation layer is on an upper surface of the first insulation layer;
• a conductive connector penetrating the second substrate, the second insulation layer and a portion of the first insulation layer, wherein the conductive connector comprises a single plug;
• a first wiring pattern between the first substrate and the first insulation layer;
• a second wiring pattern between the second substrate and the second insulation layer;
• and
• a floating diffusion region in the second substrate;
• wherein the second wiring pattern is electrically connected to the floating diffusion region, and wherein the first wiring pattern is electrically connected to the second wiring pattern by the conductive connector, wherein each of the first and second wiring patterns are in direct contact with the conductive connector.