Flexible wiring circuit board and imaging device

A flexible wiring circuit board having flexibility comprising:

• a first insulating layer,
• a wire disposed at one side in a thickness direction of the first insulating layer,
• a second insulating layer disposed at one side in the thickness direction of the wire,
• a shield layer disposed at one side in the thickness direction of the second insulating layer, and
• a third insulating layer disposed at one side in the thickness direction of the shield layer,
• wherein
• the shield layer includes
• an electrically conductive layer and
• two barrier layers sandwiching the electrically conductive layer therebetween in the thickness direction;
• the electrically conductive layer is selected from a metal belonging to a group 11, and the fourth period and the fifth period in the periodic table;
• each of the two barrier layers is selected from a metal belonging to groups 4 to 10, and the fourth to the sixth periods in the periodic table;
• each of the materials for the second insulating layer and the third insulating layer is a polyimide;
• the electrically conductive layer has a thickness of 0.05 μm or more and 1.0 μm or less;
• and
• each of the two barrier layers has a thickness of 0.01 μm or more and 0.05 μm or less.