Organic light-emitting display device having an upper substrate formed by a metal and method of fabricating the same

• US 10,892,438 B2
• Filed: 05/22/2018
• Issued: 01/12/2021
• Est. Priority Date: 05/22/2017
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Kim, Dong-Jin, Baek, Jae-Woon
• Primary Examiner(s): Nguyen, Sophia T
• Application Number:
  US15/985,919
• Publication Number:
  US 20180336817A1
• Time in Patent Office: 966 Days
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/8423 Metallic sealing arrangements
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

An organic light-emitting display device is provided. The organic light-emitting display device includes an upper substrate coupling a lower substrate by an encapsulating layer. The upper substrate includes a metal. An inclined surface is formed at an edge of a substrate of the upper substrate by a rotating polishing wheel. Thus, in the organic light-emitting display device, the reliability may be prevented from being decreased by the metal burr without lowering the process efficiency and uniformity.

Claims

1. An organic light-emitting display device comprising:

an upper substrate and a lower substrate facing each other, the upper substrate including a metal; and

an encapsulating layer between the upper substrate and the lower substrate,

wherein the upper substrate includes an upper surface opposite to the encapsulating layer and a side inclined surface having a concavo-convex shape, and the side inclined surface is disposed between the upper surface and a side surface of the upper substrate, and

wherein the upper substrate further includes a corner inclined surface disposed at a corner of the upper surface, and wherein the corner inclined surface has a length greater than that of the side inclined surface.

2. The organic light-emitting display device according to claim 1, wherein the side inclined surface of the upper substrate overlaps the lower substrate in an area outside the encapsulating layer.

3. The organic light-emitting display device according to claim 1, wherein the concavo-convex shape of the side inclined surface is extended to one direction.

4. The organic light-emitting display device according to claim 3, wherein the concavo-convex shape of the side inclined surface is extended along the side surface of the upper substrate.

5. The organic light-emitting display device according to claim 1, further comprising a flexible printed circuit board connected to a pad disposed on the lower substrate outside the encapsulating layer, the flexible printed circuit board extending on the upper surface of the upper substrate.

6. The organic light-emitting display device according to claim 5, wherein the flexible printed circuit board includes a first FPCB insulating layer, a FPCB conductive layer and a second FPCB insulating layer, which are sequentially stacked.

7. The organic light-emitting display device according to claim 6, wherein the first FPCB insulating layer in close proximity to the upper substrate has a thickness greater than a height of the concavo-convex shape of the side inclined surface.

8. The organic light-emitting display device according to claim 7, wherein the first FPCB insulating layer is in contact with the side inclined surface of the upper substrate.

9. The organic light-emitting display device according to claim 6, wherein the second FPCB insulating layer has a thickness greater than the first FPCB insulating layer.

10. The organic light-emitting display device according to claim 1, wherein the corner inclined surface of the upper substrate overlaps the lower substrate in an area outside the encapsulating layer.

11. The organic light-emitting display device according to claim 1, wherein a vertical distance between a lower surface of the upper substrate facing the lower substrate and the corner inclined surface is equal to a vertical distance between the lower surface of the upper substrate and the side inclined surface.

12. The organic light-emitting display device according to claim 11, wherein the corner inclined surface has a height equal to that of the side inclined surface.