Masks, method to inspect and adjust mask position, and method to pattern pixels of organic light-emitting display device utilizing the masks

Patent metadata

Field	Value
Publication number	US-10566533-B2
Application number	US-201916292288-A
Country	US
Kind code	B2
Filing date	Mar 4, 2019
Priority date	May 19, 2015
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A method for pixel patterning and pixel position inspection of an organic light-emitting display device includes: forming, on a substrate using a first mask, a thin film layer of a first color corresponding to a first pixel pattern and a first pixel positioning pattern for inspecting a position of a first pixel; shifting, by a determined pitch, the first mask from a position associated with forming the thin film layer of the first color; aligning the shifted first mask with respect to the substrate; and forming, on the substrate using the shifted first mask, a thin film layer of a second color corresponding to the first pixel pattern and another first pixel positioning pattern for inspecting a position of a second pixel.

First claim

What is claimed is:

1. An organic light-emitting display device comprising:
a substrate comprising an active area and a dummy area outside the active area;
a first pixel electrode in the active area;
a first auxiliary layer on the pixel electrode; and
a first color emission layer on the first auxiliary layer,
wherein the first color emission layer and the first auxiliary layer are configured to be formed using a same patterned mask.

2. The organic light-emitting display device of claim 1 , wherein the first color emission layer is a red color emission layer.

3. The organic light-emitting display device of claim 1 , wherein the first color emission layer is a green color emission layer.

4. The organic light-emitting display device of claim 1 , further comprising:
a second pixel electrode in the active area; and
a second color emission layer on the second pixel electrode,
wherein colors of the first color emission layer and the second color emission layer are different, and
wherein a distance between the first color emission layer and the first pixel electrode is greater than a distance between the second color emission layer and the second pixel electrode.

5. The organic light-emitting display device of claim 1 , wherein a position of the same patterned mask to form the first auxiliary layer is shifted a predetermined distance to form the first color emission layer.

6. A method of manufacturing an organic light-emitting display device, the method comprising:
forming a pixel electrode in a central portion of a substrate, the central portion corresponding to an active area of the organic light-emitting display device;
forming a first layer on the pixel electrode using a first mask; and
forming a first color emission layer on the first layer using the first mask.

7. The method of claim 6 , wherein the first color emission layer is a red color emission layer.

8. The method of claim 6 , wherein the first color emission layer is a green color emission layer.

9. The method of claim 6 , wherein the first layer is an auxiliary layer of the first color emission layer.

10. The method of claim 6 , wherein the first layer is between the first color emission layer and the pixel electrode.

11. The method of claim 6 , wherein forming the first color emission layer comprises:
shifting, after forming the first layer on the pixel electrode, a position of the first mask by a predetermined distance to form the first color emission layer.

12. The method of claim 6 , wherein forming the first color emission layer comprises:
modifying, after forming the first layer on the pixel electrode, an arrangement of the first mask relative to the substrate by a predetermined amount to form the first color emission layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Sangshin
• Ha Dongjin
• Kang Mingoo
• Kwon Ohseob
• Yi Sangmin

Classifications

• H01L51/56

  Electricity · mapped topic

• H01L27/3211

  Electricity · mapped topic

• H01L51/5088

  Electricity · mapped topic

• H01L51/0011 Primary

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic