Organic light-emitting display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10714710-B2
Application number	US-201715681108-A
Country	US
Kind code	B2
Filing date	Aug 18, 2017
Priority date	Aug 19, 2016
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

Provided is an organic light-emitting display apparatus including a substrate including a black pigment; a pixel electrode above the substrate; a pixel defining layer above the pixel electrode and having an opening for exposing at least a portion of the pixel electrode; an intermediate layer above the pixel electrode and including an emission layer (EML); and an opposite electrode above the intermediate layer.

First claim

What is claimed is:

1. An organic light-emitting display apparatus comprising:
a substrate comprising a black pigment;
a pixel electrode above the substrate;
a pixel defining layer above the pixel electrode and having an opening for exposing at least a portion of the pixel electrode;
an intermediate layer above the pixel electrode and comprising an emission layer (EML);
an opposite electrode above the intermediate layer;
a black matrix arranged above the opposite electrode, the black matrix having an opening that exposes at least a portion of an emission area;
a capping layer above the opposite electrode;
a cover layer above the capping layer; and
a thin-film encapsulation layer above the cover layer,
wherein a weight percentage of the black pigment with respect to the substrate is between about 1% and about 15%.

2. The organic light-emitting display apparatus of claim 1 , wherein the black pigment comprises at least one of aniline black (C 66 H 51 Cr 3 N 11 O 12 ), carbon black, lamp black, graphite, Paliogen® Black (C 40 H 26 N 2 O 4 ), and perylene black (C 40 H 26 N 2 O 6 ).

3. The organic light-emitting display apparatus of claim 1 , wherein a light absorbance, of light in a visible ray range, of the substrate is equal to or greater than about 90%.

4. The organic light-emitting display apparatus of claim 1 , wherein a thickness of the substrate is between about 5 μm and about 40 μm.

5. The organic light-emitting display apparatus of claim 1 , further comprising a polarizing layer above the thin-film encapsulation layer.

6. The organic light-emitting display apparatus of claim 5 , wherein reflectance of the organic light-emitting display apparatus comprising the polarizing layer is equal to or less than about 5%.

7. An organic light-emitting display apparatus comprising:
a substrate comprising a black pigment;
a pixel electrode above the substrate;
a pixel defining layer above the pixel electrode and having an opening for exposing at least a portion of the pixel electrode;
an intermediate layer above the pixel electrode and comprising an emission layer (EML);
an opposite electrode above the intermediate layer;
a capping layer above the opposite electrode;
a cover layer above the capping layer;
a thin-film encapsulation layer above the cover layer; and
a black matrix arranged above the thin-film encapsulation layer, the black matrix having an opening that exposes at least a portion of an emission area.

8. The organic light-emitting display apparatus of claim 7 , wherein the opposite electrode comprises a low-reflection layer.

9. The organic light-emitting display apparatus of claim 7 , further comprising a color filter that covers the opening of the black matrix.

10. The organic light-emitting display apparatus of claim 9 , wherein reflectance of the organic light-emitting display apparatus comprising the color filter is equal to or less than about 5%.

11. A method of manufacturing an organic light-emitting display apparatus, the method comprising:
forming a substrate by hardening a substrate composition comprising a black pigment;
forming a pixel electrode above the substrate;
forming, above the pixel electrode, a pixel defining layer having an opening for exposing at least a portion of the pixel electrode;
forming, above the pixel electrode, an intermediate layer comprising an emission layer (EML);
forming an opposite electrode above the intermediate layer;
forming a capping layer above the opposite electrode;
forming a cover layer above the capping layer; and
forming a thin-film encapsulation layer above the cover layer,
wherein a black matrix is arranged above the opposite electrode, the black matrix having an opening that exposes at least a portion of an emission area, and
wherein a weight percentage of the black pigment with respect to the substrate is between about 1% and about 15%.

12. The method of claim 11 , wherein the black pigment comprises at least one of aniline black (C 66 H 51 Cr 3 N 11 O 12 ), carbon black, lamp black, graphite, Paliogen® Black (C 40 H 26 N 2 O 4 ), and perylene black (C 40 H 26 N 2 O 6 ).

13. The method of claim 11 , wherein a thickness of the substrate is between about 5 μm and about 40 μm.

14. The method of claim 11 , further comprising, after the forming of the thin-film encapsulation layer, forming a polarizing layer above the thin-film encapsulation layer.

15. The method of claim 11 , further comprising, after the forming of the thin-film encapsulation layer, forming, above the thin-film encapsulation layer, a black matrix having an opening that exposes at least a portion of an emission area.

16. The method of claim 15 , further comprising, after the forming of the black matrix, forming a color filter that covers the opening of the black matrix.

17. The organic light-emitting display apparatus of claim 1 , wherein the substrate comprises polyimide (PI).

18. The method of claim 11 , wherein the substrate comprises polyimide (PI).

Assignees

• Samsung Display Co Ltd

Inventors

• Woo Junhyuk
• Kim Jeongwon
• Ju Jinho

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K50/82

  Cathodes · CPC title

• H10K50/868

  Arrangements for polarized light emission (H10K50/86 takes precedence) · CPC title

• H10K50/844

  Encapsulations · CPC title