Display apparatus including tandem organic light-emitting diode

A display apparatus comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel emitting light of different colors, the display apparatus comprising:

• a first organic light-emitting diode, a second organic light-emitting diode, and a third organic light-emitting diode arranged on a substrate and corresponding to the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively;
• a first intermediate layer commonly provided in the first organic light-emitting diode and the second organic light-emitting diode and comprising a first emission layer and a first charge generation layer;
• a second intermediate layer provided in the third organic light-emitting diode and comprising a second emission layer and a second charge generation layer;
• a first color conversion layer, a second color conversion layer, and a transmission layer arranged to correspond to the first organic light-emitting diode, the second organic light-emitting diode, and the third organic light-emitting diode, respectively;
• and
• a bank arranged on the substrate between the first emission layer and the second emission layer to space the second emission layer from the first emission layer,
• wherein the first emission layer emits light of a different color from the second emission layer, the first charge generation layer comprises a first material, and the second charge generation layer comprises a second material different from the first material,
• wherein, in a plan view, the bank surrounds around an entire periphery of the second emission layer, the bank is located between the second organic light-emitting diode and the third organic light-emitting diode, and the bank is not located between the first organic light-emitting diode and the second organic light-emitting diode,
• wherein the first charge generation layer in the first organic light-emitting diode and the second organic light-emitting diode comprises a host doped with the first material, and wherein the second charge generation layer in the third organic light-emitting diode comprises a host doped with the second material different than the first material, and
• wherein the first charge generation layer and the second charge generation layer do not overlap each other in a thickness direction of the substrate.