Patent ID: 8213167

Claim:
A portable display device comprising: at least two display elements; at least two foldable panel housings receiving the display elements, electronic components, and other parts, respectively; a joint portion in which the display elements are adjacent to each other when the display elements are unfolded; a display panel being configured to form each display elements; an outer electrode disposed on one side of each display element; a driver mounted on the display panel to drive the corresponding display element; and pixel electrodes disposed on the display panel, wherein the display elements are disposed adjacent to each other when the panel housings are unfolded and the distance between the adjacent display elements is less than 3 mm, the pixel electrodes are connected to the outer electrode through a coupling electrode in order to dispose the outer electrode on one side of the display panel, and the coupling electrode passes by the edge of the display panel, the coupling electrode couples the pixel electrodes in the y direction to the outer electrode in the x direction and couples the pixel electrodes to the outer electrodes so as to exchange the horizontal direction and the vertical direction, the display elements are driven by selecting one of a method of sending signals to the display driving parts by dividing data signals and a method of sending the signals to the display driving parts by dividing common signals, the same data signals are supplied to the display elements when supplying the divided common signals to the display elements and the same common signals are supplied to the display elements when supplying the divided data signals, and the driver is formed in a single chip so as to output the common signals and the data signals from the single chip and is mounted on each display element.