Color conversion panel and display device including color conversion panel

Patent metadata

Field	Value
Publication number	US-10948137-B2
Application number	US-201816219845-A
Country	US
Kind code	B2
Filing date	Dec 13, 2018
Priority date	Jan 19, 2017
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A color conversion panel includes a first color conversion layer, a second color conversion layer, and a light wavelength conversion layer. The first color conversion layer includes a first semiconductor nanocrystal set for providing red light. The second color conversion layer neighbors the first color conversion layer and includes a second semiconductor nanocrystal set for providing first green light. The light wavelength conversion layer neighbors the second light conversion layer, may provide blue light, and includes a third semiconductor nanocrystal set for providing second green light.

First claim

What is claimed is:

1. A color conversion panel comprising:
a first color conversion layer including a first particle set configured to convert incident blue light to emit red light;
a second color conversion layer neighboring the first color conversion layer and including a second particle set configured to convert the incident blue light to emit green light; and
a light wavelength conversion layer neighboring the second color conversion layer and configured to emit the green light and transmit the incident blue light.

2. The color conversion panel of claim 1 , wherein the color conversion panel receives incident light emitted from an organic light emitting panel.

3. The color conversion panel of claim 2 , wherein the light wavelength conversion layer is configured to receive the incident blue light from the organic light emitting panel to produce output blue light, and a wavelength of the output blue light is longer than a wavelength of the incident blue light.

4. The color conversion panel of claim 2 , wherein the light wavelength conversion layer is configured to receive incident blue light from the organic light emitting panel to produce output blue light, a wavelength of the incident blue light is in a range of 440 nm to 450 nm, and a wavelength of the output blue light is in a range of 455 nm to 465 nm.

5. The color conversion panel of claim 1 , wherein the light wavelength conversion layer includes at least one of a dye and a pigment.

6. The color conversion panel of claim 1 , further comprising a substrate overlapping each of the first color conversion layer, the second color conversion layer, and the light wavelength conversion layer.

7. The color conversion panel of claim 6 , further comprising a blue light cutting filter positioned between the substrate and at least one of the first color conversion layer and the second color conversion layer.

8. The color conversion panel of claim 6 , further comprising a blue color filter positioned between the light wavelength conversion layer and the substrate.

9. The color conversion panel of claim 1 , wherein at least one of the first color conversion layer, the second color conversion layer, and the light wavelength conversion layer includes a light scattering member.

10. The color conversion panel of claim 1 , wherein the light wavelength conversion layer includes a blue particle set configured to provide blue light.

11. The color conversion panel of claim 1 , wherein the incident blue light is first blue light, and the light wavelength conversion layer emits second blue light, and a wavelength of the second blue light is longer than a wavelength of the first blue light.

12. A color conversion panel comprising:
a first color conversion layer including a first particle set configured to provide red light;
a second color conversion layer neighboring the first color conversion layer and including a second particle set configured to provide green light; and
a light wavelength conversion layer neighboring the second color conversion layer, configured to provide more blue light than each of the first color conversion layer and the second color conversion layer, and comprising a third particle set configured to provide the green light.

13. The color conversion panel of claim 12 , wherein particles of the second particle set are identical to particles of the third particle set.

14. The color conversion panel of claim 12 , wherein the third particle set is less than 20 wt % of the light wavelength conversion layer.

15. The color conversion panel of claim 12 , wherein the light wavelength conversion layer includes a blue particle set configured to provide blue light, and each blue particle of the blue particle set is smaller than each particle of the third particle set.

16. A color conversion panel comprising:
a first color conversion layer including a first particle set configured to convert first blue light to emit red light;
a second color conversion layer neighboring the first color conversion layer and including a second particle set configured to convert the first blue light to emit green light; and
a light wavelength conversion layer neighboring the second color conversion layer and configured to emit second blue light, wherein a wavelength of the second blue light is longer than a wavelength of the first blue light.

Assignees

• Samsung Display Co Ltd
• Samsung Display Co Lid

Inventors

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

Classifications

• H10H20/8513

  having two or more wavelength conversion materials · CPC title

• H10H20/851

  Wavelength conversion means · CPC title

• G02F1/133617 Primary

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F1/1335 Primary

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/25

  as to hue or predominant wavelength · CPC title