Organic electroluminescent display with reflection-reducing properties
An organic electroluminescent device and method for fabricating the same are provided. The organic electroluminescent device comprises an anode. An organic luminescent layer is formed over the anode. A partially light-transmitting layer is formed over the organic luminescent layer. A protection layer is formed over the partially light-transmitting layer. A reflection-reducing layer is formed over the protection layer. A cathode is formed over the reflection-reducing layer.
1. An organic electroluminescent device, comprising:
an anode;
an organic luminescent layer disposed over the anode;
a partially light-transmitting layer disposed over the organic luminescent layer;
a first protection layer disposed over the partially light-transmitting layer, wherein the first protection layer comprises copper phthalocyanine (CuPc);
a reflection-reducing layer disposed over the first protection layer;
a second protection layer disposed over the reflection-reducing layer; and
a cathode disposed over the second protection layer.
2. The organic electroluminescent device as claimed in claim 1 , wherein the anode comprises indium tin oxide (ITO).
3. The organic electroluminescent device as claimed in claim 1 , wherein the partially light-transmitting layer comprises aluminum.
4. The organic electroluminescent device as claimed in claim 1 , wherein the reflection-reducing layer comprises n-type doped semiconductor material, zinc oxide (ZnO), zinc sulfide (ZnS), calcium hexaboride (CaB 6 ), or lanthanum nitride (LaN).
5. The organic electroluminescent device as claimed in claim 1 , wherein the second protection layer comprises organic material.
6. The organic electroluminescent as claimed in claim 5 , wherein the organic material is copper phthalocyanine (CuPc).
7. The organic electroluminescent device as claimed in claim 1 , wherein the partially light-transmitting layer is formed with a thickness of about 50 Å to about 150 Å.
8. The organic electroluminescent device as claimed in claim 1 , wherein the protection layer is formed with a thickness of about 50 Å to about 1000 Å.
9. The organic electroluminescent device as claimed in claim 1 , wherein the reflection-reducing layer is formed with a thickness of about 100 Å to about 3000 Å.
10. The organic electroluminescent device as claimed in claim 1 , wherein the second protection layer is formed with a thickness of about 50 Å to about 1000 Å.
11. A display device, comprising:
an organic electroluminescent device of claim 1 ; and
a control unit electrically coupled to the organic electroluminescent device.
12. The display device as claimed in claim 11 , further comprising a second protection layer disposed between the cathode and the reflection-reducing layer of the organic electroluminescent device.