Organic light-emitting diode (OLED) display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9287335-B2
Application number	US-201313916433-A
Country	US
Kind code	B2
Filing date	Jun 12, 2013
Priority date	Nov 22, 2012
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

An organic light-emitting diode (OLED) display and a method of manufacturing the same are disclosed. In one aspect, the method includes: forming a barrier layer on a base substrate of a mother panel, forming a plurality of display units in units of cell panels on the barrier layer and forming an encapsulation layer on each of the plurality of display units of the cell panels. The method further includes applying an organic film to an interface portion between the cell panels and cutting along the interface portion applied with the organic film. Accordingly, cracks are prevented from occurring in the barrier layer when the mother panel is cut in units of the cell panels, thereby reducing a defect rate of a product and stabilizing its quality.

First claim

What is claimed is:

1. A method of manufacturing an organic light-emitting diode (OLED) display, the method comprising:
forming a barrier layer on a base substrate of a mother panel;
forming a plurality of display units in units of cell panels on the barrier layer;
forming an encapsulation layer on each of the display units of the cell panels;
applying an organic film to an interface portion between the cell panels, wherein the organic film contacts neither the display units nor the encapsulation layer; and
cutting along the interface portion,
wherein a groove is formed in the barrier layer, wherein at least a portion of the organic film is formed in the groove, and wherein the groove does not penetrate into the base substrate.

2. A method of manufacturing an organic light-emitting diode (OLED) display, the method comprising:
forming a barrier layer on a base substrate of a mother panel;
forming a plurality of display units in units of cell panels on the barrier layer;
forming an encapsulation layer on each of the display units of the cell panels;
applying an organic film to an interface portion between the cell panels, wherein the organic film contacts neither the display units nor the encapsulation layer; and
cutting along the interface portion,
wherein each of the display units comprises a thin film transistor (TFT) layer, a planarization film formed on the TFT layer, and a light-emitting unit formed on the planarization film,
wherein the organic film is formed of the same material and is substantially simultaneously formed as the planarization film.

3. The method of claim 2 , wherein each of the organic film and the planarization film comprises at least one of polyimide and acryl.

4. The method of claim 1 , wherein the barrier layer comprises an inorganic film.

5. The method of claim 1 , wherein the base substrate is formed of polyimide.

6. A method of manufacturing an organic light-emitting diode (OLED) display, the method comprising:
forming a barrier layer on a base substrate of a mother panel;
forming a plurality of display units in units of cell panels on the barrier layer;
forming an encapsulation layer on each of the display units of the cell panels;
applying an organic film to an interface portion between the cell panels; and
cutting along the interface portion,
wherein the base substrate is formed of polyimide,
and wherein the method further comprises, before forming the barrier layer, attaching a carrier substrate formed of a glass material to another surface of the base substrate, and before the cutting along the interface portion, separating the carrier substrate from the base substrate.

7. The method of claim 1 , wherein the encapsulation layer has a thin film encapsulation structure in which a plurality of thin films are stacked.

8. The method of claim 1 , wherein the organic film is spaced apart from each of the display units.

9. The method of claim 1 , wherein the organic film is formed such that a portion of the organic film directly contacts the base substrate and wherein the remaining portion of the organic film contacts the barrier layer while surrounding an edge portion of the barrier layer.

10. An organic light-emitting diode (OLED) display comprising:
a barrier layer formed on a base substrate;
a display unit formed on the barrier layer;
an encapsulation layer formed on the display unit; and
an organic film formed at an edge portion of the barrier layer, wherein the organic film contacts neither the display unit nor the encapsulation layer,
wherein a groove is formed in the barrier layer, wherein at least a portion of the organic film is formed in the groove, and wherein the groove does not penetrate into the base substrate.

11. The OLED display of claim 10 , wherein the organic film comprises at least one of polyimide and acryl.

12. The OLED display of claim 10 , wherein the barrier layer comprises an inorganic film.

13. The OLED display of claim 10 , wherein the base substrate is formed of polyimide.

14. The OLED display of claim 10 , wherein the organic film is spaced apart from the display unit.

15. The OLED display of claim 10 , wherein the organic film is formed on the edge portion of the barrier layer such that a portion of the organic film directly contacts the base substrate and wherein the remaining portion of the organic film contacts the barrier layer while surrounding the edge portion of the barrier layer.

16. The method of claim 1 , wherein the display units are formed above the organic film.

17. The method of claim 1 , wherein a gap is formed between the organic film and the encapsulation layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Yi Chung

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H01L51/56

  Electricity · mapped topic

• H01L27/3244 Primary

  Electricity · mapped topic

• H01L51/524

  Electricity · mapped topic