Flexible circuit board

A flexible circuit board having wiring patterns for connecting terminals on each of a front surface and a back surface of its periphery, the flexible circuit board comprising:

• terminal patterns with linear-planar-shaped traces, the traces being equally spaced and disposed on the peripheries of each of the front surface and the back surface of the board;
• and
• backing patterns with planar-shaped traces, the traces of the backing patterns being combined with the traces of the terminal patterns and bent so that the central portion of the trace of the backing pattern is offset from that of the trace of the terminal pattern,
• the traces of the backing patterns being disposed on the corresponding opposite side of the traces of the terminal patterns on the board so as to be positioned overlapping with the traces of the terminal patterns, and the traces of the backing patterns being bent to overlap portions on the terminal patterns corresponding to pressing portions of connector contacts.