Flexible printed circuit board

A flexible printed circuit board which includes a base film having an insulating property and a conductive pattern laminated on one surface of the base film, and has a terminal connecting area toward one end edge of the conductive pattern, the flexible printed circuit board comprising:

• a reinforcement member laminated on another surface of the base film and situated at least at a position opposite the terminal connecting area, and
• connection terminals made of a metal and mounted on the terminal connecting area to be electrically connected to the conductive pattern, the connection terminals being separate from each other,
• wherein a shape of an end edge of the reinforcement member on a same side as an opposite end edge of the conductive pattern includes a periodic form constituted by curved lines, the periodic form being an undulating form,
• wherein a period of the periodic form is greater than or equal to 0.5 mm, and a wave height of the undulating form is greater than or equal to 0.5 mm, and
• wherein the terminal connecting area toward the one end edge has a comb shape with a plurality of teeth portions into which the base film is divided, each one of the teeth portions being provided with a corresponding one of the connection terminals mounted thereon.