Organic light emitting diode display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9614167-B2
Application number	US-201514954574-A
Country	US
Kind code	B2
Filing date	Nov 30, 2015
Priority date	May 21, 2013
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

Disclosed is an organic light emitting diode display including an organic light emitting display panel configured to display an image, and a lower passivation film attached to a bottom of the organic light emitting diode display panel. The lower passivation film includes a support film that is in contact with the organic light emitting diode display panel, and a stress adjustment layer formed beneath the support film and configured to reduce a bending stress to be induced in the organic light emitting display panel when the organic light emitting display panel and the lower passivation film are bent.

First claim

What is claimed is:

1. An organic light emitting diode display comprising:
an organic light emitting display panel including a flat portion and a bent portion, and
a lower passivation film attached to a bottom of the organic light emitting diode display panel,
wherein the lower passivation film includes:
a stress adjustment portion at least positioned corresponding to the bent portion and having a space configured to reduce a bending stress to be induced in the organic light emitting display panel when the organic light emitting display panel and the lower passivation film are bent.

2. The organic light emitting diode display of claim 1 , wherein the bent portion is positioned at an end of the flat portion.

3. The organic light emitting diode display of claim 1 , wherein the stress adjustment portion includes a plurality of stress adjustment patterns disposed around the space and adjacent to each other.

4. The organic light emitting diode display of claim 3 , wherein lower ends of adjacent stress adjustment patterns are directly connected.

5. The organic light emitting diode display of claim 3 , wherein lower ends of adjacent stress adjustment patterns are spaced apart from each other.

6. The organic light emitting diode display of claim 1 , wherein the stress adjustment portion has stress adjustment patterns having any one selected from a triangular shape, a trapezoidal shape, a semicircular shape and a quadrantal shape.

7. The organic light emitting diode display of claim 6 , wherein:
the stress adjustment patterns include first stress adjustment patterns positioned corresponding to the flat portion and second stress adjustment patterns positioned corresponding to the bent portions, and
an interval between the second stress adjustment patterns is smaller than an interval between the first stress adjustment patterns.

8. The organic light emitting diode display of claim 7 , wherein the interval between the first stress adjustment patterns and the interval between the second stress adjustment patterns are intervals between central axes of upper ends of the first and second stress adjustment patterns, respectively.

9. The organic light emitting diode display of claim 6 , wherein the lower passivation film further includes:
a support film positioned between the stress adjustment portion and the organic light emitting diode display panel; and
a plane passivation layer formed beneath the support film and adjacent to the stress adjustment layer.

10. The organic light emitting diode display of claim 9 , wherein the plane passivation layer is positioned to correspond to the flat portion.

11. A display comprising:
a display panel including a flat portion and a bent portion, and
a lower passivation film attached to a surface of the display panel and including a bent stress adjustment pattern positioned corresponding to the bent portion.

12. The display of claim 11 , wherein the bent stress adjustment pattern comprises a cutout in the lower passivation film.

13. The display of claim 11 , wherein the lower passivation film includes a flat stress adjustment pattern extending from the bent stress adjustment pattern and positioned to correspond to the flat portion.

14. The display of claim 11 , wherein the lower passivation film includes a plurality of the bent stress adjustment patterns, wherein successive ones of the plurality of bent stress adjustment patterns are positioned in adjacent manner.

15. The display of claim 14 , wherein lower ends of adjacent bent stress adjustment patterns are directly connected.

16. The display of claim 11 , wherein the bent portion is positioned at an end of the flat portion.

17. The display of claim 11 , the lower passivation film includes:
a support film that is in contact with the display panel,
a stress adjustment layer formed beneath the support film and including the bent stress adjustment pattern in order to reduce a bending stress to be induced in the display panel when the display panel and the lower passivation film are bent, and
a plane passivation layer formed beneath the support film and adjacent to the stress adjustment layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Jeong Chul Woo
• Park Soon Ryong
• So Jung Ho
• Baek Seok Gi
• Kim Kwang Hyeok
• Eom Jeong Yong

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K59/871 Primary

  Self-supporting sealing arrangements · CPC title

• H01L51/56

  Electricity · mapped topic