Electric device with high screen ratio

An electric device, comprising:

• a first housing;
• a second housing;
• a touch panel disposed in the first housing, wherein the touch panel has a first side, a second side, a third side, and a fourth side, the first side is opposite to the second side, the third side is connected to the first side and the second side, and the touch panel comprises:
• a plurality of first electrodes;
• a plurality of second electrodes;
• a plurality of first peripheral lines connecting part of the first electrodes at the first side;
• a plurality of second peripheral lines connecting part of the first electrodes at the second side;
• and
• a plurality of third peripheral lines connecting the second electrodes at the third side;
• a flexible printed circuit board, comprising:
• a substrate having a first surface and a second surface;
• a plurality of first connecting lines connecting the first peripheral lines at the first surface;
• a plurality of second connecting lines connecting the second peripheral lines at the first surface;
• and
• a plurality of third connecting lines connecting the third peripheral lines at the second surface, and being arranged from the second surface to the first surface through a plurality of first through holes;
• a control chip connecting the first connecting lines, the second connecting lines, and the third connecting lines;
• and
• a main circuit board disposed in the second housing, wherein the control chip is disposed on the main circuit board.