Display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-2018183003-A1
Application number	US-201715824681-A
Country	US
Kind code	A1
Filing date	Nov 28, 2017
Priority date	Dec 28, 2016
Publication date	Jun 28, 2018
Grant date	—

Abstract

A display device and a method for manufacturing the same are disclosed, in which a cathode electrode is not separated from an organic light emitting layer. The method for manufacturing a display device comprises the steps of forming pixels on a display area on a first substrate, forming an encapsulation film to cover the display area, attaching a protective film onto the encapsulation film, and removing the protective film. When attaching the protective film, the protective film includes a substrate layer and an adhesive layer formed at an edge area of at least one side of the substrate layer.

First claim

What is claimed is:

1 . A method for manufacturing a display device, the method comprising:
forming pixels on a display area on a first substrate; forming an encapsulation film to cover the display area; attaching a protective film onto the encapsulation film, wherein the protective film includes a substrate layer and a first adhesive layer formed at an edge area of at least one side of the substrate layer; and removing the protective film.

2 . The method of claim 1 , wherein the edge area of at least one side of the substrate layer is overlapped with a non-display area surrounding the display area.

3 . The method of claim 1 , wherein each of the pixels includes a first electrode, an organic light emitting layer arranged on the first electrode, and a second electrode arranged on the organic light emitting layer, and the first adhesive layer is not overlapped with the second electrode.

4 . The method of claim 3 , wherein adhesion between the encapsulation film and the first adhesive layer is greater than adhesion between the second electrode and the organic light emitting layer.

5 . The method of claim 1 , wherein in the attaching of the protective film, the protective film further includes a second adhesive layer formed at a center area of the substrate layer.

6 . The method of claim 1 , further comprising attaching a second substrate onto the encapsulation film by using a third adhesive layer after removing the protective film.

7 . A display device comprising:
a substrate including a display area on which pixels are arranged, and a non-display area surrounding the display area; an encapsulation film covering the display area; and a protective film adhered onto the substrate, wherein the protective film includes a substrate layer and a first adhesive layer formed at an edge area of at least one side of the substrate layer.

8 . The display device of claim 7 , wherein the edge area of at least one side of the substrate layer is overlapped with the non-display area surrounding the display area.

9 . The display device of claim 7 , wherein each of the pixels includes a first electrode, an organic light emitting layer arranged on the first electrode, and a second electrode arranged on the organic light emitting layer, and the first adhesive layer is not overlapped with the second electrode.

10 . The display device of claim 7 , wherein the substrate layer is provided with a gap formed at a center area, the gap being formed between the substrate layer and the substrate.

11 . The display device of claim 7 , wherein the protective film further includes a second adhesive layer formed at a center area of the substrate layer.

12 . The display device of claim 11 , wherein adhesion between the second adhesive layer and the encapsulation film is smaller than adhesion between the first adhesive layer and the encapsulation film.

13 . The display device of claim 11 , wherein each of the pixels includes a first electrode, an organic light emitting layer arranged on the first electrode, and a second electrode arranged on the organic light emitting layer, and adhesion between the encapsulation film and the second adhesive layer is smaller than adhesion between the second electrode and the organic light emitting layer.

14 . The display device of claim 11 , wherein the second adhesive layer is formed of a plurality of patterns.

Assignees

• Lg Display Co Ltd

Inventors

• Han Gyuhyeong
• Lim Heechul
• Kim Byoungchul
• Park Heesung

Classifications

• H10D84/01 Primary

  Manufacture or treatment · CPC title

• H10K71/00

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

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/1216

  the pixel elements being capacitors · CPC title

• H10K59/122

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