An electronic device comprises a supporting substrate, a flexible substrate disposed on the supporting substrate, a plurality of electronic units and a conductive pattern layer. The flexible substrate is bent from a front side to a back side of the supporting substrate, and a portion of the flexible substrate is disposed on the back side of the supporting substrate. The electronic units are disposed within a display region of the flexible substrate. The conductive pattern layer extends from the display region to the portion of the flexible substrate, and the conductive pattern layer electrically connects at least two of the electronic units.