Color conversion panel and display device including color conversion panel

Patent metadata

Field	Value
Publication number	US-10184618-B2
Application number	US-201715677471-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Jan 19, 2017
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

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 semiconductor nanocrystal set configured to provide red light;
a second color conversion layer neighboring the first color conversion layer and including a second semiconductor nanocrystal set configured to provide first green light; and
a light wavelength conversion layer neighboring the second color conversion layer, configured to provide blue light, and including a third semiconductor nanocrystal set configured to provide second green light.

2. The color conversion panel of claim 1 , wherein
semiconductor nanocrystals of the second semiconductor nanocrystal set are identical to semiconductor nanocrystals of the third semiconductor nanocrystal set.

3. The color conversion panel of claim 1 , wherein
the light wave length conversion layer is configured to receive incident light to produce output light, and
a wavelength of the output light is longer than a wavelength of the incident light.

4. The color conversion panel of claim 1 , wherein
the third semiconductor nanocrystal set is less than 20 wt % of the light wavelength conversion layer.

5. The color conversion panel of claim 1 , wherein
the light wave length conversion layer is configured to receive incident light to produce output light,
a wavelength of the incident light is in a range of 440 nm to 450 nm, and
a wavelength of the output light is in a range of 455 nm to 465 nm.

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

7. The color conversion panel of claim 1 , 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 1 , 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. A display device comprising:
a transistor panel including a thin film transistor;
a first color conversion layer overlapping the transistor panel and including a first semiconductor nanocrystal set configured to provide red light;
a second color conversion layer neighboring the first color conversion layer and including a second semiconductor nanocrystal set configured to provide first green light; and
a light wavelength conversion layer neighboring the second color conversion layer, configured to provide blue light, and including a third semiconductor nanocrystal set configured to provide second green light.

11. The display device of claim 10 , further comprising
a light unit configured to emit emitted light, wherein
the transistor panel is positioned between the light unit and the light wavelength conversion layer, and
a wavelength of the emitted light is in a range of 440 nm to 450 nm.

12. The display device of claim 10 , wherein
the first green light has a first green light wavelength,
the second green light has a second green light wavelength, and
the second green light wavelength is shorter than the first green light wavelength.

13. The display device of claim 10 , further comprising
a light unit configured to emit emitted light, wherein
the light wave length conversion layer is configured to receive the emitted light to produce output light, and
a wavelength of the output light is longer than a wavelength of the emitted light.

14. The display device of claim 10 , wherein
the third semiconductor nanocrystal set is less than 20 wt % of the light wavelength conversion layer.

15. The display device of claim 10 , further comprising
a light unit configured to emit emitted light, wherein
the light wave length conversion layer is configured to receive the emitted light to produce output light, and
a wavelength of the output light is in a range of 455 nm to 465 nm.

16. The display device of claim 10 , wherein
the light wavelength conversion layer includes at least one of a dye and a pigment.

17. The display device of claim 10 , further comprising
a blue light cutting filter, wherein at least one of the first color conversion layer and the second color conversion layer is positioned between the blue light cutting filter and the transistor panel.

18. The display device of claim 10 , further comprising
a blue color filter, wherein the light wavelength conversion layer is positioned between the blue color filter and the transistor panel.

19. The display device of claim 10 , 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.

20. The display device of claim 10 , wherein
the light wavelength conversion layer includes a blue particle set, and
each blue particle of the blue particle set is smaller than each semiconductor nanocrystal of the third semiconductor nanocrystal set.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• F21K9/64 Primary

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title

• F21V9/40

  with provision for controlling spectral properties, e.g. colour, or intensity · CPC title

• H01L33/50

  Electricity · mapped topic

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F1/353

  Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams · CPC title