Photo-detection device

A photo-detecting device comprising:

• N photodiodes (N:
• two or more integer) each generating an electric charge in response to an intensity of incident light;
• a first substrate in which said N photodiodes are provided, said N first bonding pads corresponding to said N photodiodes respectively are arranged on one surface of said first substrate;
• a second substrate bump-connected with said first substrate, said second substrate having a first surface which faces said first substrate and on which N second bonding pads corresponding to said N first bonding pads are provided while each electrically connected to the associated first bonding pad among said N first bonding pads through a bump, said second substrate including a device formation layer between said first surface and a second surface opposing said first surface;
• N switches provided in said device formation layer of said second substrate corresponding to said N photodiodes respectively and each having electrically switchable first and second terminals, each of said first terminals being electrically connected to the associated photodiode among said N photodiodes through the associated first bonding pad, bump, and second bonding pad;
• a common wire provided in said device formation layer of said second substrate, said common wire being commonly connected to each of said second terminals of said N switches;
• and
• an integrating circuit provided in said device formation layer of said second substrate, for storing the inputted electron charge through said common wire, said integrating circuit having an input terminal electrically connected to said common wire and an output terminal for outputting a voltage corresponding to the stored electric charge.