IP Library › Granted Patent US 9,147,862
Granted Patent B2
US 9,147,862 · App. 14/154,658 · Granted Sep 29, 2015

Method of manufacturing organic light emitting display device

Inventors: Kyung-Ho Kim (Yongin, KR); Jin-Koo Chung (Yongin, KR); Jun-Ho Choi (Yongin, KR)
Assignee: Samsung Display Co., Ltd.
H01L51/56
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Quick Facts
Patent No.
US 9,147,862
App. No.
14/154,658
Granted
Sep 29, 2015
Kind
B2
Abstract

A method of manufacturing an organic light emitting display device includes defining pixels on a substrate, each of the pixels including a first area in which light is emitted in a first direction and a second area in which light is emitted in a second direction opposite the first direction; forming first electrodes respectively disposed in the first area of each of the pixels; forming a sacrificial layer in the first area and the second area of each pixel to cover the first electrodes; forming openings in the sacrificial layer to open a patterning area in the respective second area of each of the pixels; forming a conductive layer on the patterning areas and the sacrificial layer; removing the sacrificial layer; forming an intermediate layer including an organic emitting layer; and forming a third electrode on the intermediate layer.

Claims (31)

1. A method of manufacturing an organic light emitting display device, the method comprising:

defining a plurality of pixels on a substrate, each of the pixels including a first area in which light is emitted in a first direction and a second area in which light is emitted in a second direction opposite the first direction;

forming a plurality of first electrodes respectively disposed in only the first area of each of the plurality of pixels;

forming a sacrificial layer in the first area and the second area of each of the plurality of pixels to cover the plurality of first electrodes, the sacrificial layer having a plurality of openings to open a patterning area in the respective second area of each of the plurality of pixels;

forming a conductive layer on the patterning areas and the sacrificial layer;

removing the sacrificial layer entirely from the first and second areas;

forming an intermediate layer including an organic emitting layer; and

forming a third electrode on the intermediate layer.

2. The method of claim 1 , wherein the first electrode comprises a transparent conductor.

3. The method of claim 2 , wherein the conductive layer is formed by stacking a reflective layer and a transparent conductive layer.

4. The method of claim 1 , wherein the first electrode is formed by stacking a reflective layer and a transparent conductive layer.

5. The method of claim 4 , wherein the conductive layer comprises a transparent conductor.

6. The method of claim 1 , wherein sidewalls forming the plurality of openings in the sacrificial layer are inclined at an angle of 90 degrees or greater with respect to a surface of the substrate.

7. The method of claim 1 , wherein removing the sacrificial layer comprises removing the conductive layer formed on the sacrificial layer.

8. The method of claim 1 , wherein the sacrificial layer includes a photo-resist.

9. A method of manufacturing an organic light emitting display device, the method comprising:

forming a first electrode in only a first area of a substrate;

forming a sacrificial layer on the substrate to cover the first electrode, the sacrificial layer having an opening to open at least a portion of a second area separated from the first area of the substrate;

forming a second electrode in an area corresponding to the opening;

removing the sacrificial layer entirely from the first and second areas;

forming an intermediate layer including an organic emitting layer on the first electrode and the second electrode; and

forming a third electrode on the intermediate layer.

10. The method of claim 9 , wherein forming the second electrode comprises:

forming a conductive layer on the substrate and the sacrificial layer.

11. The method of claim 10 , wherein the first electrode comprises a transparent conductor.

12. The method of claim 11 , wherein the conductive layer is formed by stacking a reflective layer and a transparent conductive layer.

13. The method of claim 10 , wherein the first electrode is formed by stacking a reflective layer and a transparent conductive layer.

14. The method of claim 13 , wherein the conductive layer comprises a transparent conductor.

15. The method of claim 10 , wherein removing the sacrificial layer comprises removing the conductive layer formed on the sacrificial layer.

16. The method of claim 9 , wherein sidewalls forming the opening in the sacrificial layer are inclined at an angle of 90 degrees or greater with respect to a surface of the substrate.

17. The method of claim 9 , wherein the sacrificial layer includes a photo-resist.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 16, 2014
From: KIM, KYUNG-HO; CHUNG, JIN-KOO; CHOI, JUN-HO
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 031983/0308 →
Priority Claims (1)
KR 10-2013-0110625 · Sep 13, 2013 · national
Continuity (1)
Related Publication 20150079710A1 · Mar 19, 2015