A display panel, comprising: a plurality of gate lines and data lines; an active area having a plurality of pixels, each of which is defined at an intersection area between a respective gate line and data line, a plurality of signal pads arranged in a non-active area, each signal pad configured so as to apply a gate signal or a data signal to a respective gate line or data line, and a test wiring portion (520, 520') arranged outside of a cutting line of the display panel and electrically connected to the plurality of signal pads in order to be used in a test of the display panel; wherein the display panel further comprises a plurality of connection wirings, each connection wiring being interposed between a respective signal pad and the test wiring portion (520, 520'), a plurality of first bridging electrodes and a plurality of second bridging electrodes, wherein each bridging electrode of the plurality of first bridging electrodes forms an electrical connection between a respective signal pad and a respective connection wiring and wherein each bridging electrode of the plurality of second bridging electrodes forms an electrical connection between the test wiring portion (520, 520') and a respective connection wiring and wherein the first and second bridging electrodes electrically connect the signal pads with the test wiring portion (520, 520'), the first and second bridging electrodes (530, 530') being formed of a material different from that of the signal pads and the test wiring portion (520, 520') on a layer different from that of the signal pads and the test wiring portion (520, 520'). a plurality of gate lines and data lines; an active area having a plurality of pixels, each of which is defined at an intersection area between a respective gate line and data line, a plurality of signal pads arranged in a non-active area, each signal pad configured so as to apply a gate signal or a data signal to a respective gate line or data line, and a test wiring portion (520, 520') arranged outside of a cutting line of the display panel and electrically connected to the plurality of signal pads in order to be used in a test of the display panel; wherein the display panel further comprises a plurality of connection wirings, each connection wiring being interposed between a respective signal pad and the test wiring portion (520, 520'), a plurality of first bridging electrodes and a plurality of second bridging electrodes, wherein each bridging electrode of the plurality of first bridging electrodes forms an electrical connection between a respective signal pad and a respective connection wiring and wherein each bridging electrode of the plurality of second bridging electrodes forms an electrical connection between the test wiring portion (520, 520') and a respective connection wiring and wherein the first and second bridging electrodes electrically connect the signal pads with the test wiring portion (520, 520'), the first and second bridging electrodes (530, 530') being formed of a material different from that of the signal pads and the test wiring portion (520, 520') on a layer different from that of the signal pads and the test wiring portion (520, 520').