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 with a first electrode layer, a second electrode layer, and an electroluminescent emission layer between the first electrode layer and the second electrode layer;
an electrode power supply line 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 being in direct contact with the second electrode layer; and
an electrical component arranged under the electrode power supply line, the electrical component comprising a conductive layer,
wherein the electrode power supply line overlaps the electrical component,
wherein the electrical component is a driver circuit for applying an electric signal to the display area, and
wherein the conductive layer is arranged directly under the electrode power supply line.
2. The electroluminescent display device of claim 1 , wherein the electrode power supply line comprises a same material as the first electrode layer.
3. The electroluminescent display device of claim 1 , wherein the
conductive layer of the electrical component comprises a same material as other 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 a portion 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 1 , wherein the opening comprises a closed curve along an outer periphery of the display area.
7. The electroluminescent display device of claim 1 , wherein a planar surface of the second electrode layer contacts a planar surface of the electrode power supply line.
8. The electroluminescent display device of claim 1 , wherein the electrical component includes a driving power supply line for supplying driving power to the display area.
9. The electroluminescent display device of claim 1 , wherein the substrate transmits light generated from the emission layer.
10. The electroluminescent display device of claim 1 , further comprising a sealing substrate facing the substrate, the sealing substrate to transmit light generated from the emission layer.
11. The electroluminescent display device of claim 1 , wherein the first electrode layer comprises a conductive reflective film.
12. The electroluminescent display device of claim 11 , wherein the conductive reflective film comprises a metal layer.
13. The electroluminescent display device of claim 11 , wherein the conductive reflective film is approximately 1000 Å or more thick.