ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME

• US 20140299845A1
• Filed: 08/08/2013
• Published: 10/09/2014
• Est. Priority Date: 04/03/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Sung-Chul, Huh, Myung-Soo, Shim, Chang-Woo
• Granted Patent: US 9,356,257 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H10K 2102/00 Constructional details relating to the organic devices covered by this subclass
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/818 Reflective anodes, e.g. ITO combined with thick metallic layers
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/125 including organic TFTs [OTFT]
• CPC Class Codes: H10K 59/8731 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: H10K 85/10 Organic polymers or oligomers
• CPC Class Codes: H10K 85/141 comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE

Abstract

In an aspect, an organic light-emitting display apparatus and a method of manufacturing the same are provided. The organic light-emitting display apparatus may include a substrate; a display unit formed on the substrate; and a thin film encapsulating layer encapsulating the display unit. The thin film encapsulating layer may include a plurality of organic layers and inorganic layers that are laminated alternately. At least one of the plurality of the inorganic films may include a first layer formed of a first material, a second layer formed of a second material other than the first material, and an intermediate layer provided between the first and second layers.

Claims

1. An organic light-emitting display apparatus comprising:

a substrate;

a display unit on the substrate; and

a thin film encapsulating layer encapsulating the display unit;

wherein the thin film encapsulating layer comprises a plurality of organic layers and inorganic layers that are alternately laminated thereon;

wherein at least one of the plurality of the inorganic layers comprises a first layer formed of a first material, a second layer formed of a second material other than the first material, and an intermediate layer provided between the first and second layers; and

wherein the intermediate layer comprises the first and second materials.

2. The organic light-emitting display apparatus of claim 1, wherein the first layer, intermediate layer, and second layer are sequentially laminated.

3. The organic light-emitting display apparatus of claim 1, wherein the first material is silicon oxide and the second material is aluminum oxide.

4. The organic light-emitting display apparatus of claim 1, wherein a thickness of the intermediate layer ranges from about 50 Å

to about 200 Å

.

5. The organic light-emitting display apparatus of claim 4, wherein a thickness of the intermediate layer ranges from about 50 Å

to about 100 Å

.

6. The organic light-emitting display apparatus of claim 1, wherein a thickness of the first and second layers ranges from about 100 Å

to about 500 Å

.

7. The organic light-emitting display apparatus of claim 6, wherein a thickness of the first and second layers is about 100 Å

through about 200 Å

.

8. The organic light-emitting display apparatus of claim 1, wherein areas of the inorganic layers are larger than areas of the organic layers.

9. The organic light-emitting display apparatus of claim 1, wherein at least one organic layer comprises polyurea or polyacrylate.

10. The organic light-emitting display apparatus of claim 1, wherein the plurality of organic layers comprise polyurea or polyacrylate.

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

forming a display unit on a substrate; and

alternately laminating an organic layer and an inorganic layer on the display unit;

wherein the forming of the inorganic layer comprises;

forming a first layer;

performing plasma treatment on a surface of the first layer;

forming an intermediate layer on the plasma treated layer; and

forming a second layer on the intermediate layer.

12. The method of claim 11, wherein the first layer is formed of a first material, the second layer is formed of a second material other than the first material, and the intermediate layer is formed of a material that comprises the first and second materials.

13. The method of claim 12, wherein the first material is silicon oxide and the second material is aluminum oxide.

14. The method of claim 11, wherein the first, intermediate, and second layers are formed by using atomic layer deposition (ALD).

15. The method of claim 11, wherein a thickness of the intermediate layer ranges from about 50 Å

to about 200 Å

.

16. The method of claim 13, wherein a thickness of the intermediate layer ranges from about 50 Å

to about 100 Å

.

17. The method of claim 11, wherein a thickness of the first and second layers ranges from about 100 Å

to about 500 Å

.

18. The method of claim 17, wherein a thickness of the first and second layers ranges from about 100 Å

to about 200 Å

.

19. The method of claim 11, wherein the organic layer comprises polyurea or polyacrylate.