Disclosed is a display device using a printed circuit board (PCB) as a substrate of a display panel. The display device includes the PCB formed with a via hole, a display panel having an electrode aligned adjacent to one side of the via hole formed in the PCB in order to apply an electric signal to a pixel or a segment, a driving circuit section for applying an electric signal to the display panel, and a wiring section for electrically connecting the electrode of the display panel to the driving circuit section through the via hole. The electric signal of the driving circuit is directly applied to the lower electrode through the via hole of the PCB, so the length of the electrode line used for wiring can be significantly reduced, thereby improving the response speed of the display device.