ORGANIC LIGHT-EMITTING DISPLAY APPARATUS INCLUDING A SHIELD LAYER AND METHOD OF MANUFACTURING THE SAME

• US 20150034921A1
• Filed: 06/27/2014
• Published: 02/05/2015
• 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: KIM, Yang-Hwan
• Granted Patent: US 9,356,085 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/1315 comprising structures specially adapted for lowering the resistance
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

An organic light-emitting display apparatus including a shield layer and a method of manufacturing the same are provided. The organic light-emitting display apparatus includes a substrate having a display area and a peripheral area surrounding the display area. A plurality of first thin film transistors (TFTs) are disposed in the display area of the substrate and a plurality of second TFTs disposed in the peripheral area of the substrate. A shield layer is positioned above the second TFTs and extended to an edge portion of the substrate. The shield layer includes a plurality of through holes in a portion that does not overlap with the second TFTs.

Claims

1. An organic light-emitting display apparatus, comprising:

a substrate including a display area and a peripheral area surrounding the display area;

a plurality of first thin film transistors (TFTs) disposed in the display area of the substrate, and a plurality of second TFTs disposed in the peripheral area of the substrate; and

a shield layer positioned above the second TFTs and extended to an edge portion of the substrate, the shield layer including a plurality of through holes in a portion that does not overlap with the second TFTs.

2. The organic light-emitting display apparatus as claimed in claim 1, further comprising a plurality of pixel electrodes disposed on the plurality of first TFTs, the shield layer being disposed on a same layer as the plurality of pixel electrodes.

3. The organic light-emitting display apparatus as claimed in claim 2, wherein the shield layer includes a same material as the pixel electrode.

4. The organic light-emitting display apparatus as claimed in claim 1, further comprising:

a plurality of light-emitting devices including a plurality of pixel electrodes electrically connected to the plurality of first TFTs, an opposite electrode facing the plurality of pixel electrodes, and an intermediate layer disposed between the plurality of pixel electrodes and the opposite electrodes and including an emission layer; and

an electrode power supply line positioned in the peripheral area of the substrate,

wherein a first side of the shield layer contacts the opposite electrode, and a second side of the shield layer contacts the electrode power supply line.

5. The organic light-emitting display apparatus as claimed in claim 4, further comprising a second insulating layer between the plurality of first TFTs and the plurality of second TFTs with the pixel electrode, wherein the second insulating layer is disposed to expose the electrode power supply line, and the first side of the shield layer is disposed on the second insulating layer.

6. The organic light-emitting display apparatus as claimed in claim 5, wherein the plurality of through holes of the shield layer are positioned in the second insulating layer.

7. The organic light-emitting display apparatus as claimed in claim 4, further comprising a third insulating layer covering an edge portion of the plurality of pixel electrodes to expose a center portion of the plurality of pixel electrodes and covering at least a portion of the shield layer on the second insulating layer, the third insulating layer including a plurality of opening portions exposing a plurality of areas of the shield layer positioned on the second insulating layer.

8. The organic light-emitting display apparatus as claimed in claim 7, wherein the opposite electrode contacts the plurality of areas of the shield layer through the plurality of opening portions of the third insulating layer.

9. The organic light-emitting display apparatus as claimed in claim 1, wherein the shield layer does not extend into the peripheral area.

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

preparing a substrate including a display area and a peripheral area surrounding the display area;

forming a plurality of first thin film transistors (TFTs) in the display area of the substrate, and a plurality of second TFTs in the peripheral area of the substrate; and

forming a shield layer above the second TFTs and extended to an edge portion of the substrate, the shield layer having a plurality of through holes in a portion that does not overlap with the second TFTs.

11. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 10, wherein the forming of the shield layer includes forming a plurality of pixel electrodes for electrical connections with the plurality of first TFTs and the shield layer.

12. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 10, wherein the forming of the plurality of first TFTs and the plurality of second TFTs includes forming the plurality of first TFTs and the plurality of second TFTs, and an electrode power supply line in a same layer as one among electrodes included in the plurality of first TFTs and the plurality of second TFTs.

13. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 12, wherein the forming of the shield layer includes forming the shield layer in which a first side of the shield layer contacts an opposite electrode, and a second side of the shield layer contacts the electrode power supply line.

14. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 12, further comprising forming a second insulating layer covering the plurality of first TFTs and the plurality of second TFTs, between the forming of the plurality of first TFTs and the plurality of second TFTs, and the forming of the plurality of pixel electrodes, wherein the forming of the shield layer includes forming a first side of the shield layer on the second insulating layer.

15. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 14, wherein the forming the shield layer includes forming the shield layer so that the first side of the shield layer formed on the second insulating layer includes a plurality of through holes.

16. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 12, further comprising forming a third insulating layer covering an edge portion of the plurality of pixel electrodes to expose a center portion of the plurality of pixel electrodes on the plurality of pixel electrodes between the forming of the plurality of pixel electrodes and the forming of the intermediate layer.

17. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 16, further comprising forming an opposite electrode corresponding to the plurality of pixel electrodes, after forming the intermediate layer, wherein the forming of the opposite electrode includes forming the opposite electrode so as to contact an exposed portion of the plurality of areas of the shield layer by the third insulating layer.

18. The method of manufacturing an organic light-emitting display apparatus as claimed in claim 10, wherein the shield layer does not extend into the peripheral area.