FLEXIBLE PRINTED BOARD, RIGID FLEXIBLE PRINTED BOARD AND ELECTRONIC APPARATUS

摘要

is an object of the present invention to provide a flexible printed circuit board which can suppress the crack of the wiring pattern . A second conductive pad (47, 47) between the first wiring pattern 43 is extended to a relatively small third width (W3). The reinforcing layer 54 is relatively easy to reinforce the first conductive pads to generate a crack 42 and the reinforcement region (A) including a boundary of the first wiring pattern 43. In this way, the reinforcing layer 54 to partially reinforce the flexible printed circuit board (29). In the reinforcement region (A) of the stress generated is suppressed. Generation of a crack in the first wiring pattern 43 is suppressed. Strength of the flexible printed circuit board 29 is averaged over the entire surface of the flexible printed circuit board (29). In addition, the outside of the reinforcement region (A) the first and second conductive pads (42, 47) defines a relatively large first width (W1) and a second width (W2). Therefore, in the outside of the reinforcement region (A) the first and second conductive pads (42, 47) may be generated in the stress, the occurrence of cracks is suppressed. ;