Organic Light Emitting Display Device and Method for Manufacturing the Same

Patent metadata

Field	Value
Publication number	US-2016358992-A1
Application number	US-201615241966-A
Country	US
Kind code	A1
Filing date	Aug 19, 2016
Priority date	Oct 31, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

The organic light emitting display device includes a flexible substrate, a thin-film transistor on the flexible substrate, a first anode on the thin-film transistor, a second anode on the same plane with the first anode and spaced apart from the first anode so as to surround the first anode, an organic light emitting layer on the first anode and the second anode, and a cathode on the organic light emitting layer. The second anode includes an opening where the first anode is encompassed therein. The shape of the first anode and the second anode and arrangement thereof reduces a segment length of an anode in a bending direction of the organic light emitting display device, and, thus, occurrence of cracks in the anode can be minimized.

First claim

What is claimed is:

1 . An organic light emitting display device comprising:
a flexible substrate including a bending area; and a thin-film transistor and an organic light emitting element in the bending area of the flexible substrate, wherein the organic light emitting element includes a first light emitting area, a second light emitting area spaced apart from the first light emitting area so as to surround the first light emitting area, and a third light emitting area spaced apart from the second light emitting area so as to surround the second light emitting area.

2 . The organic light emitting display device according to claim 1 , wherein the first light emitting area, the second light emitting area and the third light emitting area are separated by a bank layer.

3 . The organic light emitting display device according to claim 1 , wherein each organic light emitting layer in each of the first light emitting area, the second light emitting area and the third light emitting area emits light of substantially a same spectral color or white light.

4 . The organic light emitting display device according to claim 3 , wherein each of the organic light emitting layers in each of the light emitting areas emits the white light, and each of the light emitting areas includes a color filter configured to filter the white light from the respective organic light emitting layer.

5 . The organic light emitting display device according to claim 1 , wherein each of the first light emitting area, the second light emitting area, and the third light emitting area emits light of different color from one another.

6 . The organic light emitting display device according to claim 5 , wherein the light of different colors emitted from the first light emitting area, the second light emitting area, and the third light emitting area includes red color, green color, and blue color.

7 . The organic light emitting display device according to claim 6 , wherein the third light emitting area is a blue light emitting area.

8 . The organic light emitting display device according to claim 1 , wherein at least one of the first light emitting area, the second light emitting area, and the third light emitting area is divided into multiple parts.

9 . The organic light emitting display device according to claim 1 , wherein the organic light element includes an anode, an organic light emitting layer, and a cathode.

10 . The organic light emitting display device according to claim 9 , wherein a shape of the at least one among the first light emitting area, the second light emitting area, and the third light emitting area is similar to or has the same as a shape of the anode.

11 . The organic light emitting display device according to claim 1 , wherein the third light emitting area is greater than the first light emitting area and the second light emitting area.

12 . The organic light emitting display device according to claim 1 , wherein the thin film transistor includes an active layer, and the active layer includes one among amorphous silicon, polycrystalline silicon, and an oxide semiconductor.

13 . An organic light emitting display device, comprising:
a flexible substrate including a bending area; and a thin-film transistor and an organic light emitting element in the bending area of the flexible substrate, wherein the organic light emitting element includes a first light emitting area, a first anode in the first light emitting area, a second light emitting area spaced apart from the first light emitting area so as to surround the first light emitting area, a second anode in the second light emitting area, a third light emitting area spaced apart from the second light emitting area so as to surround the second light emitting area and a third anode in the third light emitting area, wherein a shape of the at least one among the first light emitting area, the second light emitting area, and the third light emitting area corresponds to a shape of the at least one among the first anode, the second anode, and the third anode.

14 . The organic light emitting display device according to claim 13 , wherein the shape of the at least one among the first light emitting area, the second light emitting area, and the third light emitting area is similar to or has the same shape of the at least one among the first anode, the second anode, and the third anode.

15 . The organic light emitting display device according to claim 13 , wherein the first light emitting area has a diamond shape.

16 . The organic light emitting display device according to claim 13 , wherein the at least one among the first light emitting area, the second light emitting area, and the third light emitting area is divided in a direction perpendicular to a bending direction of the flexible substrate.

17 . The organic light emitting display device according to claim 13 , wherein the third light emitting area is greater than the first light emitting area and the second light emitting area.

Assignees

• Lg Display Co Ltd

Inventors

• Ha Anna
• Lee Chanwoo
• Youn Sangcheon

Classifications

• Y02E10/549

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