FLEXIBLE WIRING BOARD, PACKAGE STRUCTURE, AND LIQUID JET HEAD

摘要

PROBLEM TO BE SOLVED: To provide a flexible wiring board which achieves excellent fracture resistance against bending.SOLUTION: A flexible wiring board includes: wiring 56 which is formed extending; a terminal 55 which is electrically connected with the wiring 56 and is mounted connected with an electrode terminal 81 at the exterior by solder; a bending part 58 which bends in a direction that intersects with an extension direction of the wiring 56; and a width extension part 57 which is provided in the wiring 56a between the bending part 58 and the terminal 55 and is formed wider than a width of the wiring 56a at the terminal 55 side.