An electroluminescent display device, comprising: a substrate including first to third pixel regions (P1, P2, P3), the second and third pixel regions (P2, P3) being adjacent to the first pixel region along a first direction and a second direction, respectively, the pixel region being an effective light-emitting area for transmitting the light, wherein a first interval distance between the first and second pixel regions (P1, P2) is smaller than a second interval distance between the first and third pixel regions (P1, P3); a passivation layer over the substrate and including a groove between the first and second pixel regions (P1, P2); a first electrode on the passivation layer and in each of the first to third pixel regions (P1, P2, P3); a bank covering an edge of the first electrode and disposed between the first pixel region and the second pixel region and between the first pixel region and the third pixel region; an emitting layer on the first electrode; and a second electrode on the emitting layer, wherein the uppermost surface of the bank disposed between the first and second pixel regions (PI, P2) has a first height from the top surface of the first electrode and the uppermost surface of the bank disposed between the first and third pixel regions (P1, P3) has a second height from the top surface of the first electrode, and the first height is smaller than the second height, wherein the bank includes a first bank and a second bank on the first bank, a width of the first bank is greater than that of the second bank, the first bank includes a material having a high surface energy such that a contact angle of the emitting material to the first bank is reduced, the second bank includes a material having a low surface energy such that a contact angle of the emitting material to the second bank is increased such that an overflow of the emitting material into an adjacent pixel region is prevented. a substrate including first to third pixel regions (P1, P2, P3), the second and third pixel regions (P2, P3) being adjacent to the first pixel region along a first direction and a second direction, respectively, the pixel region being an effective light-emitting area for transmitting the light, wherein a first interval distance between the first and second pixel regions (P1, P2) is smaller than a second interval distance between the first and third pixel regions (P1, P3); a passivation layer over the substrate and including a groove between the first and second pixel regions (P1, P2); a first electrode on the passivation layer and in each of the first to third pixel regions (P1, P2, P3); a bank covering an edge of the first electrode and disposed between the first pixel region and the second pixel region and between the first pixel region and the third pixel region; an emitting layer on the first electrode; and a second electrode on the emitting layer, wherein the uppermost surface of the bank disposed between the first and second pixel regions (PI, P2) has a first height from the top surface of the first electrode and the uppermost surface of the bank disposed between the first and third pixel regions (P1, P3) has a second height from the top surface of the first electrode, and the first height is smaller than the second height, wherein the bank includes a first bank and a second bank on the first bank, a width of the first bank is greater than that of the second bank, the first bank includes a material having a high surface energy such that a contact angle of the emitting material to the first bank is reduced, the second bank includes a material having a low surface energy such that a contact angle of the emitting material to the second bank is increased such that an overflow of the emitting material into an adjacent pixel region is prevented.