Method of forming thin film and method of manufacturing organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-9577193-B2
Application number	US-201514877408-A
Country	US
Kind code	B2
Filing date	Oct 7, 2015
Priority date	Mar 27, 2015
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A method of forming a thin film, the method including: disposing a resist portion on a substrate, the resist portion including: a first region including a first upper surface; and a second region including a second upper surface, the first upper surface disposed higher than the second upper surface and forming a step; disposing a first protection layer covering the resist portion; exposing the first upper surface; removing the first region; disposing a first thin film on the substrate; disposing a second protection layer covering the first thin film; exposing the second upper surface; removing the second region; disposing a second thin film on the substrate; and removing the first protection layer and the second protection layer.

First claim

What is claimed is:

1. A method of manufacturing an organic light-emitting display device, the method comprising:
disposing a resist portion on a substrate, the resist portion comprising: a first region; a second region; and a third region, the first region, the second region, and the third region having different heights, and the substrate comprising a plurality of pixel electrodes;
disposing a first protection layer on the resist portion;
exposing a first upper surface of the first region;
exposing a first pixel electrode between the plurality of the pixel electrodes by removing the first region from the exposed first upper surface;
disposing a first interlayer on the first pixel electrode;
disposing a second protection layer covering the first interlayer;
exposing a second upper surface of the second region;
exposing a second pixel electrode between the plurality of pixel electrodes by removing the second region from the exposed second upper surface;
disposing a second interlayer on the second pixel electrode;
disposing a third protection layer covering the second interlayer; and
exposing a third upper surface of the third region;
exposing a third pixel electrode between the plurality of pixel electrodes by removing the third region from the exposed third upper surface;
disposing a third interlayer on the third pixel electrode; and
removing the first protection layer, the second protection layer, and the third protection layer,
wherein the first upper surface has a first height, the second upper surface has a second height, and the third upper surface has a third height, and the first height is greater than the second height and the third height, and the second height is greater than the third height.

2. The method of claim 1 , wherein the exposing the first upper surface comprises removing a first upper portion of the first protection layer,
wherein the exposing the second upper surface comprises removing a second upper portion of the first protection layer and the second protection layer,
wherein the exposing the third upper surface comprises removing a third upper portion of the first protection layer, the second protection layer, and the third protection layer, and
wherein the first upper portion of the first protection layer, the second upper portion of the first protection layer and the second protection layer, and the third upper portion of the first protection layer, the second protection layer, and the third protection layer are removed by etching or polishing.

3. The method of claim 2 , wherein removing the first upper portion of the first protection layer comprises: forming a fourth upper surface on the first protection layer in the same plane with the first upper surface,
wherein removing the second upper portion of the first protection layer and the second protection layer comprises: forming a fifth upper surface on the first protection layer and the second protection layer in the same plane with the second upper surface, and
wherein removing the third upper portion of the first protection layer, the second protection layer, and the third protection layer comprises: forming a sixth upper surface on the first protection layer, the second protection layer, and the third protection layer in the same plane with the third upper surface.

4. The method of claim 1 , wherein the second protection layer is formed by filling the same material as the first protection layer in an area where the first region is removed, and
wherein the third protection layer is formed by filling the same material as the first protection layer in an area where the second region is removed.

5. The method of claim 1 , wherein the organic light-emitting display device comprises a plurality of sub-pixels configured to emit different colors, and
the first region, the second region, and the third region correspond with the plurality of sub-pixels.

6. The method of claim 1 , further comprising:
disposing an opposite electrode on the first interlayer, the second interlayer, and the third interlayer.

7. The method of claim 6 , further comprising:
disposing a thin film encapsulation layer on the opposite electrode.

8. The method of claim 6 , further comprising
disposing a plurality of thin film transistors on the substrate, the plurality of thin film transistors electrically connected to the plurality of pixel electrodes.

9. The method of claim 1 , wherein the resist portion further comprising connecting portions disposed on an insulating film, the connecting portions connecting the first region, the second region, and the third region, and
wherein the insulating film is disposed between the plurality of pixel electrodes, separating each of the plurality of pixel electrodes.

10. The method of claim 9 , wherein the removing the first protection layer, the second protection layer, and the third protection layer comprises: removing the connecting portions.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hanjun

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K71/00

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

• H10K71/10 Primary

  Deposition of organic active material · CPC title

• H01L2227/323

  Electricity · mapped topic