1. A printed circuit board comprising:a first flexible base member;
a first metal line disposed on the first flexible base member;
a first plating line disposed on the first metal line, wherein the first plating line comprises a first connecting portion, a first interconnection portion extending from the first connecting portion, and a first bending portion extending from the first interconnection portion;
a first protective layer covering the first interconnection portion and exposing the first connecting portion and the first bending portion;
a connection part disposed on the first bending portion and connected to the first bending portion;
a second protective layer extending from a side surface of the connection part;
a second plating line disposed on the second protective layer;
a second metal line disposed on the second plating line; and
a second flexible base member disposed on the second metal line.