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

• US 9,337,445 B2
• Filed: 04/16/2014
• Issued: 05/10/2016
• Est. Priority Date: 08/05/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Jae-Sun, Lee, Ung-Soo
• Primary Examiner(s): Santiago, Mariceli
• Application Number:
  US14/254,616
• Publication Number:
  US 20150035431A1
• Time in Patent Office: 755 Days
• US Class Current: 1/1
• CPC Class Codes: B32B 2457/206 Organic displays, e.g. OLED
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Provided is an organic light-emitting display apparatus. The organic light-emitting display apparatus includes a substrate, an organic light-emitting unit formed on the substrate and including a stacked structure of a first electrode, an intermediate layer, and a second electrode, an organic layer formed on the organic light-emitting unit, a first adhesion promoting layer formed on the organic layer, and a first inorganic layer formed on the adhesion promoting layer and including a low temperature viscosity transition (LVT) inorganic material.

Claims

1. An organic light-emitting display apparatus comprising:

a substrate;

an organic light-emitting unit formed on the substrate and including a stacked structure of a first electrode, an intermediate layer, and a second electrode;

an organic layer formed on the organic light-emitting unit;

a first adhesion promoting layer formed on the organic layer; and

a first inorganic layer formed on the first adhesion promoting layer and including a low temperature viscosity transition (LVT) inorganic material,

wherein the first adhesion promoting layer promotes adhesion between the organic layer and the first inorganic layer, and

wherein the first inorganic layer is formed from a pre-inorganic layer by a heat treatment at a temperature above a viscosity transition temperature of the LVT inorganic material.

2. The organic light-emitting display apparatus of claim 1, wherein the first adhesion promoting layer includes at least one of a metal oxide and an organometallic compound.

3. The organic light-emitting display apparatus of claim 1, wherein the organic layer is also formed on the substrate.

4. The organic light-emitting display apparatus of claim 1, wherein the LVT inorganic material includes tin oxide.

5. The organic light-emitting display apparatus of claim 1, wherein the first adhesion promoting layer and the first inorganic layer are also formed on the substrate.

6. The organic light-emitting display apparatus of claim 1, wherein the substrate is a flexible substrate.

7. The organic light-emitting display apparatus of claim 1, further comprising:

a second adhesion promoting layer formed on the first inorganic layer; and

a second inorganic layer formed on the second adhesion promoting layer and including the LVT inorganic material.

8. The organic light-emitting display apparatus of claim 7, wherein the second adhesion promoting layer and the second inorganic layer are also formed on the substrate.

9. The organic light-emitting display apparatus of claim 7, further comprising an encapsulation substrate on the second inorganic layer.

10. The organic light-emitting display apparatus of claim 1,

wherein the viscosity transition temperature of the LVT inorganic material is lower than a transforming temperature of a material included in the organic light-emitting unit, and

wherein the viscosity transition temperature is above 80°

C. and the transition temperature is below 130°

C.

11. The organic light-emitting display apparatus of claim 1, wherein the LVT inorganic material includes at least one of phosphor oxide, boron phosphate, tin fluoride, niobium oxide, and tungsten oxide.

12. A method of manufacturing an organic light-emitting display apparatus, the method comprising:

forming an organic light-emitting unit including a stacked structure of a first electrode, an intermediate layer, and a second electrode on a substrate;

forming an organic layer on the organic light-emitting unit;

forming a first adhesion promoting layer including at least one of a metal oxide and an organometallic compound on the organic layer; and

forming a first inorganic layer including a low temperature viscosity transition (LVT) inorganic material on the first adhesion promoting layer,

wherein the first adhesion promoting layer promotes adhesion between the organic layer and the first inorganic layer, and

wherein the first inorganic layer is formed from a pre-inorganic layer by a heat treatment at a temperature above a viscosity transition temperature of the LVT inorganic material.

13. The method of claim 12, wherein the forming of the first inorganic layer comprises:

providing the LVT inorganic material on the first adhesion promoting layer to form the pre-inorganic layer including the LVT inorganic material; and

curing the pre-inorganic layer at the temperature above the viscosity transition temperature of the LVT inorganic material.

14. The method of claim 12, wherein the organic layer is also formed on the substrate.

15. The method of claim 12, wherein the first adhesion promoting layer and the first inorganic layer are also formed on the substrate.

16. The method of claim 12, further comprising:

forming a second adhesion promoting layer including at least one of a metal oxide and an organometallic compound on the first inorganic layer; and

forming a second inorganic layer including the LVT inorganic material on the second adhesion promoting layer.

17. The method of claim 16, further comprising forming an encapsulation substrate on the second inorganic layer.

18. The method of claim 12,

wherein the viscosity transition temperature of the LVT inorganic material is lower than a transforming temperature of a material included in the organic light-emitting unit, and

wherein the viscosity transition temperature is above 80°

C. and the transition temperature is below 130°

C.

19. The method of claim 12, wherein the LVT inorganic material includes at least one of phosphor oxide, boron phosphate, tin fluoride, niobium oxide, and tungsten oxide.