Dual panel-type organic electroluminescent display device and method of fabricating the same
View Patent ↗A dual panel-type organic electroluminescent display device includes first and second substrates facing and spaced apart from each other, an array element layer disposed along an inner surface of the first substrate, the array element including a thin film transistor, a connection pattern disposed on the array element layer and electrically connected to the thin film transistor, a color filter layer disposed along an inner surface of the second substrate, the color filter layer including red, green, and blue color filters, an overcoat layer disposed on the color filter layer, the overcoat layer including a hygroscopic material, an organic electroluminescent diode disposed on the overcoat layer and connected to the connection pattern, the organic electroluminescent diode including a first electrode, an organic light-emitting layer, and a second electrode sequentially formed on the overcoat layer, and the organic light-emitting layer emits substantially monochromatic light, and a seal pattern along peripheral portions between the first and second substrates.
1. A dual panel-type organic electroluminescent display device, comprising:
first and second substrates facing and spaced apart from each other;
an array element layer formed along an inner surface of the first substrate, the array element including a switching thin film transistor and a driving thin film transistor;
a connection pattern formed on the array element layer and electrically connected to the thin film transistor;
a color filter layer formed along an inner surface of the second substrate, the color filter layer including red, green, and blue color filters;
an overcoat layer formed on entire of the color filter layer, the overcoat layer including a hygroscopic material;
an organic electroluminescent diode formed on the overcoat layer and connected to the connection pattern, the organic electroluminescent diode including a first electrode, an organic light-emitting layer, and a second electrode sequentially formed on the overcoat layer, and the organic light-emitting layer emits substantially monochromatic light, the second electrode connected to the driving thin film transistor;
an insulating pattern and a partition wall for the first electrode within a non-pixel area, and an insulating pattern and a partition wall formed between adjacent organic light-emitting layers and between adjacent second electrodes; and
a seal pattern along peripheral portions between the first and second substrates.
2. The device according to claim 1 , further comprising a black matrix between adjacent ones of the red, green, and blue color filters of the color filter layer.
3. The device according to claim 1 , wherein the first electrode functions as an anode and the second electrode functions as a cathode, and the first electrode is transparent to transmit light emitted from the organic light-emitting layer.
4. The device according to claim 3 , wherein the hygroscopic material is transparent.
5. The device according to claim 1 , wherein the overcoat layer has a thickness equal to or greater than a thickness of the color filter layer.
6. The device according to claim 1 , further comprising a barrier layer between the overcoat layer and the organic electroluminescent diode.
7. The device according to claim 1 , wherein the organic light-emitting layer emits white light.
8. The device according to claim 1 , further comprising color-changing mediums between the first electrode and the color filter layer.
9. The device according to claim 8 , wherein the overcoat layer has a thickness equal to or greater than a sum of thicknesses of the color filter layer and the color-changing mediums.
10. The device according to claim 8 , wherein the organic light-emitting layer emits blue light.