Organic light-emitting display device and method of manufacturing the same
View Patent ↗An organic light-emitting display device and a method of manufacturing the same. The organic light-emitting display device has a structure including an organic layer between a pixel electrode and an opposite electrode, the organic layer including a emissive layer and an insulating layer defining a light emission area. Accordingly, the insulating layer included in the organic layer functions as a pixel-defining layer, and thus, “edge open”, which is generated when forming an emissive layer on a thick pixel-defining layer according to the comparable art, may be reduced or prevented.
1. An organic light-emitting display device comprising a pixel electrode, an opposite electrode facing the pixel electrode, and an organic layer between the pixel electrode and the opposite electrode,
wherein the organic layer comprises an emissive layer for emitting light, an insulating layer in the organic layer between the pixel electrode and the opposite electrode and defining a light emission area of the emissive layer, a hole injection/transport layer between the emissive layer and the pixel electrode for supplying holes to the emissive layer, and an electron injection/transport layer between the emissive layer and the opposite electrode for supplying electrons to the emissive layer,
wherein the insulating layer is between the emissive layer and the electron injection/transport layer, and is wholly separated from the pixel electrode by an other layer within the organic layer, and
wherein the insulating layer and at least a portion of the emissive layer overlap in a thickness direction.
2. The organic light-emitting display device of claim 1 , wherein the insulating layer defines the light emission area in units of pixels.
3. The organic light-emitting display device of claim 1 , wherein the insulating layer has a thickness of about 500 Å to about 2000 Å.
4. The organic light-emitting display device of claim 1 , wherein the other layer is a hole injection/transport layer.