A printed circuit board is provided to differentiate a terminal-plating type for a socket part from a terminal-plating type for a pad part, thereby preventing the printed circuit board from being cracked. A flexible board(21b) has conductive patterns therein, wherein the flexible board is bendable. A socket part(21a) is extended to one side of the board. A connector connected to an external device is mounted on one surface of the socket part. A gold-plating layer is formed on the connector. A pad part(21c) is extended to the other end of the board. The pad part has a copper layer(22), wherein the copper layer has circuit patterns formed on both surfaces thereof. A nickel-plating layer(27) and a gold-plating layer(28) are sequentially formed on the copper layer.
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