Flexible printed circuit board and touch screen panel apparatus having the same

A touch screen panel apparatus, comprising:

• a touch screen panel including:
• a transparent substrate,
• a plurality of sensing electrodes on a first surface of the transparent substrate,
• a front surface pad unit coupled to the sensing electrodes,
• a non-sensing electrode on a second surface of the transparent substrate, the second surface being opposite the first surface;
• and
• a rear surface pad unit coupled to the non-sensing electrode;
• and
• a FPCB including a first pad unit coupled to the front surface pad unit of the touch screen panel and a second pad unit coupled to the rear surface pad unit of the touch screen panel,
• wherein the FPCB includes:
• a main substrate unit having the first pad unit;
• and
• an auxiliary substrate unit having:
• a first substrate unit extending from one side of the main substrate unit parallel with the first pad unit on the first surface of the touch screen panel,
• a second substrate unit including the second pad unit, the second substrate unit on the second surface of the touch screen panel and facing the first substrate unit through the transparent substrate;
• and
• a plurality of third substrate units extending between the first substrate unit and the second substrate unit to couple the first and second substrate units to each other.