Abstract: An electroluminescent display device includes: a substrate, a first electrode on the substrate, a connection pattern on the substrate, the connection pattern including a same material as the first electrode, a bank covering edges of the first electrode and the connection pattern, a light-emitting layer on the first electrode, a second electrode on the light-emitting layer, the bank, and the connection pattern, and an auxiliary pattern between the connection pattern and the second electrode, the auxiliary pattern including one or more of: a metal oxide, conductive nanoparticles, and a work function-modifying polymer.

Abstract: A display device can include a substrate including first and second pixel regions; a first electrode in each of the first and second pixel regions; and a bank disposed at a boundary of each of the first and second pixel regions on the first electrode defining a first opening exposing a portion of the first electrode and a second opening within the bank defining a formation area of an emitting layer, the second opening is larger than the first opening, in which an area of the first opening in the first pixel region is smaller than an area of the first opening in the second pixel region, and an area of the second opening in the first pixel region is substantially same as an area of the second opening in the second pixel region.

Abstract: An organic light emitting diode includes a first electrode; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer and emitting white light; an electron auxiliary layer on the light emitting material layer; and a second electrode on the electron auxiliary layer, wherein the light emitting material layer includes a first light emitting material layer, a second light emitting material layer and a third light emitting material layer sequentially layered, and wherein the first light emitting material layer includes an electron blocking material.

Abstract: An organic light emitting diode includes a first electrode; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer and emitting white light; an electron auxiliary layer on the light emitting material layer; and a second electrode on the electron auxiliary layer, wherein the light emitting material layer includes a first light emitting material layer, a second light emitting material layer and a third light emitting material layer sequentially layered, and wherein the first light emitting material layer includes an electron blocking material.

Abstract: A display device can include a substrate including first and second pixel regions; a first electrode in each of the first and second pixel regions; and a bank disposed at a boundary of each of the first and second pixel regions on the first electrode defining a first opening exposing a portion of the first electrode and a second opening within the bank defining a formation area of an emitting layer, the second opening is larger than the first opening, in which an area of the first opening in the first pixel region is smaller than an area of the first opening in the second pixel region, and an area of the second opening in the first pixel region is substantially same as an area of the second opening in the second pixel region.