Electroluminescence display device having electrode power supply line
View Patent ↗An electroluminescent display device may include a display area formed on one surface of a substrate. It may further include a first electrode layer, a second electrode layer, and an electroluminescent emission layer between the first and second electrode layers. It may also include an electrode power supply line that supplies electrode power to the display area. The electrode power supply line can be located at least partially on an outer periphery of the display area, and may directly contact the second electrode layer. An electrical component may be arranged under the electrode power supply line, and may have one or more conductive layers.
1. An electroluminescent display device comprising:
a display area formed on one surface of a substrate, the display area comprising a first electrode layer, a second electrode layer, and an electroluminescent emission layer disposed between the first electrode layer and the second electrode layer;
a sealing member configured to seal at least the display area;
an electrode power supply line configured to supply electrode power to the display area, the electrode power supply line comprising a layer arranged along at least a portion of an outer periphery of the display area, and in direct contact with the second electrode layer;
a driving power supply line disposed between the sealing member and the substrate and configured to supply driving power to the display area; and
an electrical component arranged under the electrode power supply line, the electrical component comprising a conductive layer arranged directly under the electrode power supply line.
2. The electroluminescent display device of claim 1 , wherein the electrode power supply line comprises the same material as the first electrode layer.
3. The electroluminescent display device of claim 1 , wherein the conductive layer of the electrical component comprises the same material as conductive layers in the display area.
4. The electroluminescent display device of claim 1 , wherein the electrode power supply line comprises a closed curve along an outer periphery of the display area.
5. The electroluminescent display device of claim 1 , wherein a pixel definition layer of the display area comprises an extension interposed between the second electrode layer and the electrode power supply line, and the second electrode layer and the electrode power supply line directly contact each other through an opening in the pixel definition layer over the electrode power supply line.
6. The electroluminescent display device of claim 5 , wherein the opening comprises a closed curve along an outer periphery of the display area.
7. The electroluminescent display device of claim 1 , wherein the second electrode layer and the electrode power supply line are in a plane contact state.
8. The electroluminescent display device of claim 1 , wherein the electrical component comprises a driver circuit portion configured to apply an electric signal to the display area.
9. The electroluminescent display device of claim 1 , wherein the substrate is configured to transmit light generated from the emission layer.
10. The electroluminescent display device of claim 1 , wherein the sealing substrate is configured to transmit light generated from the emission layer.
11. The electroluminescent display device of claim 10 , wherein the first electrode layer comprises a conductive reflective film.
12. The electroluminescent display device of claim 11 , wherein the conductive reflective film is a metal layer.
13. The electroluminescent display device of claim 11 , wherein the conductive reflective film is approximately 1000 Å or more thick.