An electroluminescent display apparatus can include a substrate including a first subpixel and a second subpixel, a planarization layer on the substrate, a first electrode in each of the first subpixel and the second subpixel on the planarization layer, a bank between the first electrode of the first subpixel and the first electrode of the second subpixel, a light emitting layer on the first electrode and the bank, and a second electrode on the light emitting layer. The planarization layer includes a plurality of grooves in a region overlapping the bank, the bank includes a bank hole in a region overlapping some of the plurality of grooves, and the bank hole extends along a boundary between the first subpixel and the second subpixel.