| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible printed board having an electrode which is excellent in solder joint strength of a solder connection part with a counterpart electrode and sufficiently secures electric conductivity over a long term.SOLUTION: Disclosed is a flexible printed board 1 in which conductors are formed on upper and lower surfaces of an insulation layer having flexibility. A recess 131 is formed in a land 130 formed on one surface of the flexible printed board 1, thereby having excellent solder joint strength of a solder connection part with a counterpart electrode 220 and sufficiently securing electric conductivity over a long term.SELECTED DRAWING: Figure 1 |
