A display module includes a substrate, wherein the substrate has a plurality of pixels, a signal line that supplies a data signal to a pixel, a current supply line that supplies electric current to the pixel, and a data driving circuit that supplies a data signal to the data line thereon. The plurality of pixels delimit a display area of the substrate and the pixel includes an emitting device, and a first thin transistor connected to the signal line that supplies the data signal.
1. A display module comprising:
a substrate;
the substrate comprising:
a plurality of pixels, a signal line that supplies a data signal to a pixel, a current supply line that supplies electric current to the pixel, and a data driving circuit that supplies a data signal to the data line thereon;
wherein the plurality of pixels comprise a display area of the substrate and the pixel comprises an emitting device, a first thin transistor connected to the signal line that supplies the data signal;
wherein a second thin film transistor is connected to the current supply line, and a capacitor regulating a gate voltage of the second thin film transistor;
wherein the emitting device comprises a first electrode layer connected to a source of the second thin film transistor, an organic emitting layer formed on the first electrode layer, and a second electrode layer formed on the organic emitting layer;
wherein a third electrode layer covered by a passivation film is disposed outside of the display area and inside of a sealing area and on a lower layer than the second electrode layer;
wherein the second electrode layer is connected to the third electrode layer through a contact hole formed in the passivation film; and
wherein a first terminal pad is connected to the data driving circuit, a second terminal pad is connected to a scan driving circuit, a third terminal pad is connected to the current supplying line, and a fourth terminal pad is connected to the third electrode layer the first to fourth terminal pads being disposed outside of the display area of the substrate;
wherein the first terminal pad, the second terminal pad, the third terminal pad, the fourth terminal pad, and the third electrode layer are formed on the same layer, respectively.
2. The display module according to claim 1 , wherein the data driving circuit is disposed on a first side of a rectangular substrate and the third electrode is disposed on a second side of the rectangular substrate which is opposite to the first side.
3. The display module according to claim 2 , wherein the fourth terminal pad is disposed on the second side of the rectangular substrate.