Complex film and organic light emitting display device comprising the same

Patent metadata

Field	Value
Publication number	US-10797116-B2
Application number	US-201816113217-A
Country	US
Kind code	B2
Filing date	Aug 27, 2018
Priority date	Oct 31, 2017
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

An organic light emitting display device and a complex film included in the organic light emitting display device are disclosed, which facilitates bending on a bending area and has optical characteristics of wide color gamut, whereby a stereoscopic effect may be improved. The organic light emitting display device comprising a substrate; and a complex film provided on the substrate, wherein the complex film includes an adhesive layer having a first area and a second area; an optical film provided on the first area of the adhesive layer; an optical conversion film provided on the second area of the adhesive layer; and a protective film covering the optical film and the optical conversion film.

First claim

What is claimed is:

1. A complex film comprising:
an adhesive layer having a first area and a second area;
an optical film provided on the first area of the adhesive layer, wherein the optical film includes a wave plate provided on the first area of the adhesive layer, a linear polarizing layer provided on the wave plate and a low-reflection layer provided on the linear polarizing layer;
an optical conversion film provided on the second area of the adhesive layer; and
a protective film covering the optical film and the optical conversion film.

2. The complex film according to claim 1 , wherein the optical conversion film includes a plurality of optical conversion particles.

3. The complex film according to claim 2 , wherein the plurality of optical conversion particles includes quantum-dots.

4. The complex film according to claim 1 , wherein a sidewall of the optical film and a sidewall of the optical conversion film are in contact with each other, and a boundary between the sidewalls forms a step difference.

5. The complex film according to claim 4 , wherein the optical film is thicker than the optical conversion film.

6. The complex film according to claim 4 , wherein the protective film covers the boundary of the optical film and the optical conversion film.

7. An organic light emitting display device comprising:
a substrate including a bending area and a non-bending area;
an optical conversion film provided on the bending area of the substrate;
an optical film provided on the non-bending area of the substrate, wherein the optical film includes a wave plate provided on the non-bending area of the substrate, a linear polarizing layer provided on the wave plate and a low-reflection layer provided on the linear polarizing layer; and
a protective film attached to the optical film and the optical conversion film.

8. The organic light emitting display device according to claim 7 , wherein the optical conversion film includes a plurality of optical conversion particles.

9. The organic light emitting display device according to claim 8 , wherein the optical conversion particles includes quantum-dots.

10. The organic light emitting display device according to claim 7 , further comprising:
a pixel array layer provided on a first surface of the substrate; and
an encapsulation member covering the pixel array layer,
wherein the optical conversion film and the optical film are provided on the second surface opposite to the first surface of the substrate.

11. The organic light emitting display device according to claim 8 , further comprising a plurality of pixels provided on the bending area,
wherein the plurality of optical conversion particles has respective sizes different from one another in accordance with a color set in each of the plurality of pixels.

12. The organic light emitting display device according to claim 11 , wherein the plurality of optical conversion particles includes a red quantum-dot, a green quantum-dot, and a blue quantum-dot.

13. A bendable organic light emitting display device having a substrate including a bending area and a non-bending area, comprising:
an optical conversion film disposed at the bending area and including a plurality of optical conversion particles converting incident light to improve color gamut; and
an optical film disposed at the non-bending area and preventing reflection of external light;
an adhesive layer attaching the optical conversion film and the optical film with the substrate; and
a protective film covering the optical film and the optical conversion film.

14. The organic light emitting display device according to claim 13 , wherein the plurality of optical conversion particles includes quantum-dots.

15. The organic light emitting display device according to claim 13 , wherein the optical film and the optical conversion film are in direct contact with each other at lateral sides.

16. The organic light emitting display device according to claim 13 , wherein the optical film is thicker than the optical conversion film.

17. The complex film according to claim 13 , wherein the protective film covers a boundary of the optical film and the optical conversion film.

18. The complex film according to claim 13 , wherein the optical film includes:
a wave plate disposed on the first area of the adhesive layer;
a linear polarizing layer disposed on the wave plate; and
a low-reflection layer disposed on the linear polarizing layer.

Assignees

• Lg Display Co Ltd

Inventors

• Park Seongwoo
• Lee Moonsun

Classifications

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K50/115

  comprising active inorganic nanostructures, e.g. luminescent quantum dots · CPC title

• H10K50/868 Primary

  Arrangements for polarized light emission (H10K50/86 takes precedence) · CPC title