Endoscope, image pickup module and manufacturing method for image pickup module

An image pickup module comprising:

• a stacked device that is a rectangular parallelepiped including a light receiving surface, a rear surface on a back side of the light receiving surface and four side surfaces, a plurality of elements including an image pickup device being stacked, adjacent elements being electrically connected together by element joints, a rear surface electrode being arranged on the rear surface;
• a relay section provided with a first electrode electrically connected to the rear surface electrode of the stacked device by relay joints and a second electrode electrically connected to the first electrode via a relay wiring pattern;
• and
• a signal cable electrically connected to the second electrode of the relay section by cable joints, wherein
• in the stacked device, of a first region and a second region obtained by dividing the rear surface into two portions, the element joints are arranged only in a first space in which the first region is extended in an optical axis direction and the rear surface electrode is arranged only in the second region.

A manufacturing method for an image pickup module, the manufacturing method comprising:

• creating a stacked device that is a rectangular parallelepiped including a light receiving surface, a rear surface on a back side of the light receiving surface and four side surfaces by electrically connecting the adjacent elements via element joints, in a state in which a plurality of elements including an image pickup device are stacked, a rear surface electrode being arranged on the rear surface;
• electrically connecting, at a second temperature, a signal cable to a second electrode of a relay section where a first electrode and the second electrode connected to the first electrode via a relay wiring pattern are arranged;
• and
• electrically connecting the first electrode of the relay section to the rear surface electrode of the stacked device at a third temperature lower than the second temperature.