Display device and method of manufacturing the same
A display device is disclosed that includes a substrate, a pixel electrode, a sacrificial layer, a pixel defining layer, a conductive layer, a light emitting material, and a common electrode. The pixel electrode is arranged on the substrate. The sacrificial layer is arranged on the pixel electrode so as to be adjacent to an outer boundary of the pixel electrode when viewed in a plan view. The pixel defining layer is arranged on the substrate, coming into direct contact with an entire top surface of the sacrificial layer, and defining a pixel opening exposing a part of the pixel electrode. The conductive layer covers a side surface of the pixel defining layer defining the pixel opening. The light emitting material is arranged on the pixel electrode within the pixel opening. The common electrode includes a first common electrode covering a top surface of the light emitting material in the pixel opening, and a second common electrode covering a top surface of the pixel defining layer.
1 . A display device comprising:
a substrate;
a pixel electrode arranged on the substrate;
a sacrificial layer arranged on the pixel electrode so as to be adjacent to an outer boundary of the pixel electrode when viewed in a plan view;
a pixel defining layer arranged on the substrate, coming into direct contact with an entire top surface of the sacrificial layer, and defining a pixel opening exposing a part of the pixel electrode;
a conductive layer covering a side surface of the pixel defining layer defining the pixel opening;
a light emitting material arranged on the pixel electrode within the pixel opening; and
a common electrode including a first common electrode covering a top surface of the light emitting material in the pixel opening, and a second common electrode covering a top surface of the pixel defining layer,
wherein the first common electrode and the second common electrode are electrically connected through the conductive layer.
2 . The display device of claim 1 , wherein the pixel-defining layer defines an undercut space while being spaced apart from a part of the pixel electrode adjacent to the sacrificial layer, and the conductive layer is spaced apart from the pixel electrode.
3 . The display device of claim 2 , wherein the light emitting material fills the undercut space, and the light emitting material is arranged between the conductive layer and the pixel electrode.
4 . The display device of claim 1 , wherein each of the first common electrode and the second common electrode comes into direct contact with the conductive layer.
5 . The display device of claim 1 , wherein the sacrificial layer is spaced apart from the conductive layer.
6 . The display device of claim 1 , wherein the side surface of the pixel defining layer has a reverse taper shape with respect to a top surface of the pixel electrode.
7 . The display device of claim 1 , wherein the conductive layer further extends from the side surface of the pixel defining layer to the top surface of the pixel defining layer adjacent to the side surface of the pixel defining layer.
8 . The display device of claim 7 , wherein the second common electrode further covers the conductive layer arranged on the top surface of the pixel defining layer.
9 . The display device of claim 1 , further comprising:
a protective pattern arranged on the top surface of the pixel defining layer.
10 . The display device of claim 9 , wherein the protective pattern includes a material identical to the conductive layer.
11 . The display device of claim 9 , wherein the second common electrode further covers the protective pattern.