ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME
An organic light emitting diode (OLED) display device and a method of fabricating the same are provided. The OLED display device includes: a substrate; a first electrode on the substrate; an organic layer on the first electrode, and including a white emission layer including a mixed host having a first host and a second host having a different polarity from the first host; and a second electrode on the organic layer.
1 . An organic light emitting diode (OLED) display device, comprising:
a substrate;
a first electrode on the substrate;
an organic layer on the first electrode, and including a white emission layer comprising a mixed host including a first host and a second host having a different polarity from the first host; and
a second electrode on the organic layer.
2 . The device according to claim 1 , wherein the first host comprises a hole transport material, and the second host comprises an electron transport material.
3 . The device according to claim 2 , wherein the hole transport material comprises an aryl amine series compound and/or a starburst amine compound.
4 . The device according to claim 2 , wherein the electron transport material comprises at least one selected from the group consisting of a metal complex having a quinoline skeleton, a metal complex having a benzoquinoline skeleton, a mixed ligand complex, an oxazole ligand, and a thiazole ligand.
5 . The device according to claim 1 , wherein the mixed host comprises from about 50 to about 75% of the first host, and from about 25 to about 50% of the second host.
6 . The device according to claim 1 , wherein the white emission layer is a multi-layered layer.
7 . The device according to claim 6 , wherein the multi-layered layer is a double or triple layered layer.
8 . The device according to claim 7 , wherein the double layered layer comprises an orange-red emission layer and a blue emission layer.
9 . The device according to claim 7 , wherein the triple layered layer comprises a red emission layer, a green emission layer, and a blue emission layer.
10 . A method of fabricating an organic light emitting diode (OLED) display device, the comprising:
preparing a substrate;
forming a first electrode on the substrate;
forming an organic layer including a white emission layer comprising a mixed host including a first host and a second host having a different polarity from the first host on the first electrode; and
forming a second electrode on the organic layer.
11 . The method according to claim 10 , wherein the forming of the organic layer comprises forming the first host to comprise a hole transport material, and forming the second host to comprise an electron transport material.
12 . The method according to claim 11 , wherein the hole transport material is formed to comprise an aryl amine series compound and/or a starburst amine compound.
13 . The method according to claim 11 , wherein the electron transport material is formed to comprise a metal complex having a quinoline skeleton, a metal complex having a benzoquinoline skeleton, a mixed ligand complex, an oxazole ligand, and/or a thiazole ligand.
14 . The method according to claim 10 , wherein the forming of the organic layer comprises forming the mixed host to comprise from about 50 to about 75% of the first host, and from about 25 to about 50% of the second host.
15 . The method according to claim 10 , wherein the forming the organic layer comprises forming the white emission layer as a multi-layered layer.
16 . The method according to claim 15 , wherein the multi-layered layer is formed as a double or triple layered layer.
17 . The method according to claim 16 , wherein the double layered layer is formed to comprise an orange-red emission layer and a blue emission layer.
18 . The method according to claim 16 , wherein the triple layered layer is formed to comprise a red emission layer, a green emission layer, and a blue emission layer.