Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10725337-B2
Application number	US-201715847653-A
Country	US
Kind code	B2
Filing date	Dec 19, 2017
Priority date	Dec 20, 2016
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

A display device and method of manufacturing the same, in which the display device includes: a first substrate; a transflective layer disposed on a surface of the first substrate; a wavelength conversion layer disposed on the transflective layer; a capping layer disposed on the wavelength conversion layer; a first polarizing layer disposed on the capping layer; and a second polarizing layer disposed on the other surface of the first substrate. The first polarizing layer and the second polarizing layer have different polarization directions.

First claim

What is claimed is:

1. A display device comprising:
a first substrate;
a transflective layer disposed on a surface of the first substrate;
a wavelength conversion layer disposed on the transflective layer;
a capping layer disposed on the wavelength conversion layer;
a first polarizing layer disposed on the capping layer; and
a second polarizing layer disposed on the other surface of the first substrate,
wherein:
the first polarizing layer and the second polarizing layer have different polarization directions; and
the second polarizing layer is a circular polarizer.

2. The display device of claim 1 , further comprising a light blocking filter disposed between the wavelength conversion layer and the first substrate.

3. The display device of claim 2 , wherein the light blocking filter is disposed between the transflective layer and the wavelength conversion layer.

4. The display device of claim 2 , wherein the transflective layer is disposed between the light blocking filter and the wavelength conversion layer.

5. The display device of claim 1 , wherein the wavelength conversion layer comprises a first wavelength conversion layer which emits red light and a second wavelength conversion layer which emits green light.

6. The display device of claim 5 , further comprising a light transmitting layer disposed adjacent to the wavelength conversion layer.

7. The display device of claim 6 , wherein the transflective layer overlaps the wavelength conversion layer and does not overlap the light transmitting layer.

8. The display device of claim 5 , further comprising a light blocking filter disposed between the first substrate and the wavelength conversion layer, wherein the light blocking filter overlaps the first wavelength conversion layer and the second wavelength conversion layer.

9. The display device of claim 5 , further comprising a black matrix disposed between the first wavelength conversion layer and the second wavelength conversion layer.

10. A display device comprising:
a first substrate;
a transflective layer disposed on a surface of the first substrate;
a wavelength conversion layer disposed on the transflective layer;
a capping layer disposed on the wavelength conversion layer;
a first polarizing layer disposed on the capping layer; and
a second polarizing layer disposed on the other surface of the first substrate,
wherein:
the first polarizing layer and the second polarizing layer have different polarization directions; and
the transflective layer comprises a first protective layer, an intermediate layer, and a second protective layer.

11. The display device of claim 10 , wherein the intermediate layer has a thickness of 100 to 200 Å.

12. The display device of claim 10 , wherein the transflective layer has a reflectance of 20 to 70%.

13. A display device comprising:
a first substrate;
a transflective layer disposed on a surface of the first substrate;
a wavelength conversion layer disposed on the transflective layer;
a capping layer disposed on the wavelength conversion layer;
a first polarizing layer disposed on the capping layer;
a second polarizing layer disposed on the other surface of the first substrate; and
a third polarizing layer disposed on the transflective layer,
wherein the first polarizing layer and the second polarizing layer have different polarization directions.

14. The display device of claim 13 , further comprising a second substrate facing the first substrate, wherein the third polarizing layer is disposed between the wavelength conversion layer and the second substrate.

15. A method of manufacturing a display device, the method comprising:
forming a transflective layer on a surface of a first substrate;
forming a wavelength conversion layer on the transflective layer;
forming a capping layer on the wavelength conversion layer; and
forming a first polarizing layer on the capping layer and forming a second polarizing layer on the other surface of the first substrate,
wherein:
the first polarizing layer and the second polarizing layer have different polarization directions; and
the second polarizing layer is a circular polarizer.

16. The method of claim 15 , further comprising forming a light blocking filter between the first substrate and the wavelength conversion layer.

17. The method of claim 16 , wherein:
the wavelength conversion layer comprises a first wavelength conversion layer which emits red light and a second wavelength conversion layer which emits green light; and
the light blocking filter overlaps the first wavelength conversion layer and the second wavelength conversion layer.

18. The method of claim 17 , further comprising forming a light transmitting layer adjacent to the wavelength conversion layer.

19. The method of claim 16 , further comprising etching the transflective layer using the light blocking filter as an etch mask.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Seon Tae
• Kwon Jung Hyun
• Park Ki Soo
• Park Hae Il
• Baek Moon Jung

Classifications

• G02F1/133555 Primary

  Transflectors · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title

• G02F1/133516 Primary

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133541

  Circular polarisers · CPC title