IP Library › Granted Patent US 7,012,280
Granted Patent B2
US 7,012,280 · App. 10/750,974 · Granted Mar 14, 2006

Organic electroluminescence display device fabricating method of the same

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Quick Facts
Patent No.
US 7,012,280
App. No.
10/750,974
Granted
Mar 14, 2006
Kind
B2
Abstract

An organic electroluminescence display device includes a substrate including an emission region and a non-emission region, a first electrode on the substrate, a buffer layer on the first electrode, the buffer layer corresponding to the non-emission region, a partition wall on the buffer layer, the partition wall including a polymer, a first carrier transporting layer on the substrate including the partition wall, the first carrier transporting layer having a hydrophilic portion corresponding to the emission region and a hydrophobic portion corresponding to the non-emission region, an emissive layer on the first carrier transporting layer, the emissive layer corresponding to the hydrophilic portion, a second carrier transporting layer on the emissive layer, and a second electrode on the second carrier transporting layer.

Claims (18)

1. An organic electroluminescence display device, comprising:

a substrate including an emission region and a non-emission region;

a first electrode on the substrate;

a buffer layer on the first electrode, the buffer layer corresponding to the non-emission region;

a partition wall on the buffer layer, the partition wall including a polymer;

a first carrier transporting layer on the substrate including the partition wall, the first carrier transporting layer having a hydrophilic portion corresponding to the emission region and a hydrophobic portion corresponding to the non-emission region;

an emissive layer on the first carrier transporting layer, the emissive layer corresponding to the hydrophilic portion;

a second carrier transporting layer on the emissive layer; and

a second electrode on the second carrier transporting layer.

2. The device according to claim 1 , wherein the hydrophilic portion of the first carrier transporting layer is formed by an oxygen plasma treatment.

3. The device according to claim 2 , wherein the hydrophobic portion of the first carrier transporting layer is formed by using a mold made of a silicon rubber.

4. The device according to claim 1 , wherein the first electrode and the second electrode function as an anode and a cathode, respectively.

5. The device according to claim 1 , wherein the emissive layer is formed by a coating method using one of a nozzle apparatus and a roller.

6. The device according to claim 5 , wherein the emissive layer is formed by using a solution including a water-soluble polymer emissive material.

7. The device according to claim 1 , wherein the first carrier transporting layer includes a hole injection layer and a hole transporting layer.

8. The device according to claim 7 , wherein the hole transporting layer includes poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid).

9. The device according to claim 1 , wherein the second carrier transporting layer includes an electron transporting layer and an electron injection layer.

10. The device according to claim 1 , wherein the second carrier transporting layer covers the first carrier transporting layer.

Assignments (1)
CHANGE OF NAME Recorded Oct 17, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021763/0177 →