Display device including a circular polarizer and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11531231-B2
Application number	US-202016901153-A
Country	US
Kind code	B2
Filing date	Jun 15, 2020
Priority date	Dec 20, 2016
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

A display device including: 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 wavelength conversion layer disposed over a surface of the first substrate;
a first polarizing layer disposed over the other surface of the first substrate;
a second polarizing layer disposed over the surface of the first substrate; and
a second substrate facing the first substrate,
wherein:
the first polarizing layer is a circular polarizer; and
the second polarizing layer disposed between the first substrate and the second substrate.

2. The display device of claim 1 , the second polarizing layer disposed over a surface of the wavelength conversion layer.

3. The display device of claim 2 , wherein the wavelength conversion layer is disposed between the first substrate and the second polarizing layer.

4. The display device of claim 1 , wherein the first polarizing layer and the second polarizing layer have different polarization directions.

5. The display device of claim 1 , further comprising a transflective layer disposed over the surface of the first substrate.

6. The display device of claim 5 , wherein the transflective layer is disposed between the first substrate and the wavelength conversion layer.

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

8. The display device of claim 7 , wherein the light blocking filter is disposed between the transflective layer and the first substrate.

9. The display device of claim 7 , wherein the light blocking filter is configured to block light only in a predetermined wavelength range.

10. The display device of claim 7 , wherein the wavelength conversion layer is disposed between the first substrate and the capping layer.

11. The display device of claim 1 , further comprising a capping layer over the surface of the first substrate.

12. A display device comprising:
a first substrate;
a wavelength conversion layer disposed over a surface of the first substrate;
a first polarizing layer disposed over the other surface of the first substrate;
a transflective layer disposed over the surface of the first substrate; and
a light blocking filter disposed between the wavelength conversion layer and the first substrate,
wherein:
the first polarizing layer is a circular polarizer; and
the transflective layer is disposed between the first substrate and the light blocking filter.

13. A method of manufacturing a display device, the method comprising:
forming a wavelength conversion layer over a first surface of a first substrate;
forming a first polarizing layer on a second surface of the first substrate opposite the first surface;
forming a second polarizing layer over the first surface of the first substrate; and
forming a second substrate facing the first substrate,
wherein:
the first polarizing layer is a circular polarizer; and
the second polarizing layer is formed between the first substrate and the second substrate.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• G02F1/133541

  Circular polarisers · CPC title

• G02F1/133531

  characterised by the arrangement of polariser or analyser axes · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title

• G02F1/133516 Primary

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

• G02F1/133548

  Wire-grid polarisers · CPC title