Cable connection structure and endoscope apparatus

A cable connection structure comprising:

• a cable having a core and a jacket made of an insulating material to cover the core, the cable having an exposed portion of the core at a distal end of the cable;
• and
• a substrate connected with the exposed portion of the core, wherein
• the substrate comprises:
• a base material made of an insulating material;
• an external connection electrode formed on a surface of the base material and connected with the exposed portion of the core;
• and
• a via provided in the base material and having an end exposed from a mounting surface of the substrate on which the cable is mounted, the via being connected with the external connection electrode, wherein
• the via is provided on one end side of the external connection electrode, the one end side being offset proximally from the distal end of the cable in an axial direction of the cable,
• a part of a surface of the via exposed from the substrate does not contact with the external connection electrode;
• the one end side of the external connection electrode is located at a substantial center of the via exposed from the substrate, and
• the substrate further comprises a solder resist layer on the base material so as to cover the one end side of the external connection electrode and an other end side of the external connection electrode and to cover the part of the surface of the via exposed from the substrate.