A portable display device includes a flexible electrophoretic display, a circuit board electrically connected to the display, and a base receiving and securing the display and the circuit board therein. The display includes a pair of electrodes for providing an electric field therebetween, and a microcapsule layer positioned between the electrodes. The circuit board is electrically connected to the electrodes of the display for providing power to the electrodes and controlling the electric field generated between the electrodes. The base comprises at least two portion foldable to each other to thereby allow the display to be foldable with the at least two portions.