| CPC H10K 59/122 (2023.02) [H10K 59/131 (2023.02); H10K 59/353 (2023.02); H10K 59/1315 (2023.02); H10K 59/80517 (2023.02); H10K 59/8052 (2023.02); H10K 59/873 (2023.02)] | 19 Claims |
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1. An electroluminescence display apparatus comprising:
a substrate including a plurality of subpixel areas including an emission area and a non-emission area surrounding the emission area and a cathode contact area located on at least one side between the plurality of subpixel areas;
a planarization layer disposed on the substrate and configured to overlap each of the emission area and the cathode contact area;
a light emitting device disposed on the planarization layer and configured to overlap the emission area, and the light emitting device including a pixel electrode and a cathode electrode facing the pixel electrode, and a light emitting layer between the pixel electrode and the cathode electrode;
a cathode contact electrode formed on the planarization layer and formed to overlap at least a portion of the non-emission area;
a bank disposed on the pixel electrode and configured to divide the emission area; and
an undercut structure in which the cathode contact electrode is formed on an inner side at one end of the bank adjacent to the cathode contact area,
wherein the cathode contact electrode includes a first cathode contact electrode and a second cathode contact electrode configured to further protrude than the first cathode contact electrode toward the cathode contact area on the first cathode contact electrode,
wherein the first cathode contact electrode includes one side surface exposed toward the cathode contact area, and
wherein the cathode electrode is in contact with the one side surface of the first cathode contact electrode,
wherein the bank, the second cathode contact electrode, and the first cathode contact electrode are provided in a reverse step structure in the undercut structure.
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