Display device having integrated metamaterial lens

Patent metadata

Field	Value
Publication number	US-10416565-B2
Application number	US-201615381932-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Dec 16, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Embodiments related to emissive display device structures having an emissive display element and a metamaterial lens having a plurality of nanoparticles over an emissive surface of the emissive display element to control the angular distribution of light emitted from the emissive display element, displays having such controlled emissive display device structures, systems incorporating such controlled emissive display device structures, and methods for fabricating them are discussed.

First claim

What is claimed is:

1. An emissive display device comprising:
an emissive display element over a substrate;
a transparent buffer layer on an emissive surface of the emissive display element; and
a metamaterial lens on the transparent buffer layer and over at least a portion of the emissive surface of the emissive display element, wherein the metamaterial lens comprises a plurality of nanoparticles.

2. The emissive display device of claim 1 , wherein at least a portion of the plurality of nanoparticles have a cross-sectional shape comprising one of a circle, an oval, a square, a rectangle, a cross, or a boomerang shape.

3. The emissive display device of claim 1 , wherein each of the plurality of nanoparticles comprises at least one of silicon, titanium oxide, gallium phosphide, or diamond.

4. The emissive display device of claim 1 , further comprising:
a second emissive display element over the substrate, the second emissive display element to emit a different band of light than the emissive display element is to emit; and
a second metamaterial lens over at least a portion of a second emissive surface of the second emissive display element, wherein the second metamaterial lens comprises a plurality of second nanoparticles, and wherein the plurality of nanoparticles have one of a different cross-sectional shape or size than the plurality of second nanoparticles.

5. The emissive display device of claim 1 , wherein the emissive display element comprises one of a light emitting diode, an organic light emitting diode, or a vertical-cavity surface-emitting laser and the metamaterial lens comprises a collimating metamaterial lens.

6. The emissive display device of claim 1 , wherein the plurality of nanoparticles comprises a high aspect ratio nanoparticle having an aspect ratio of a height of the nanoparticle to a width of the nanoparticle of at least 2.5.

7. The emissive display device of claim 1 , further comprising:
augmented reality optics optically coupled to the emissive display element; and
an integrated system coupled to the emissive display element and configured to provide image data to the emissive display element.

8. The emissive display device of claim 7 , wherein the augmented reality optics comprise a visual layer having a prism.

9. The emissive display device of claim 7 , wherein the augmented reality optics comprise a waveguide and first and second holographic beam splitters disposed on opposite ends of the waveguide.

10. The emissive display device of claim 1 , wherein each of the plurality of nanoparticles have a cross-sectional shape comprising one of a circle or an oval.

11. The emissive display device of claim 10 , wherein each of the plurality of nanoparticles have an aspect ratio of a height of the nanoparticle to a width of the nanoparticle of at least 2.5.

12. An emissive display device comprising:
a first emissive display element over a substrate;
a first metamaterial lens over at least a portion of a first emissive surface of the first emissive display element, wherein the first metamaterial lens comprises a plurality of first nanoparticles;
a second emissive display element over the substrate, the second emissive display element to emit a different band of light than the first emissive display element is to emit; and
a second metamaterial lens over at least a portion of a second emissive surface of the second emissive display element, wherein the second metamaterial lens comprises a plurality of second nanoparticles, and wherein the plurality of first nanoparticles have one of a different cross-sectional shape or size than the plurality of second nanoparticles.

13. The emissive display device of claim 12 , wherein each of the plurality of first nanoparticles comprises at least one of silicon, titanium oxide, gallium phosphide, or diamond.

14. The emissive display device of claim 12 , further comprising:
a transparent buffer layer on the first emissive surface of the first emissive display element, wherein the first metamaterial lens is on the transparent buffer layer.

15. The emissive display device of claim 12 , wherein the plurality of first nanoparticles have a first cross-sectional shape and the plurality of second nanoparticles have a second cross-sectional shape, and wherein the first cross-sectional shape and the second cross-sectional shape are different.

16. The emissive display device of claim 15 , further comprising:
a third emissive display element over the substrate, the third emissive display element to emit a blue band of light, wherein the first emissive display element is to emit a red band of light and the second emissive display element is to emit a green band of light; and
a third metamaterial lens over at least a portion of a third emissive surface of the third emissive display element, wherein the third metamaterial lens comprises a plurality of third nanoparticles having one of a different cross-sectional shape or size than the plurality of first nanoparticles.

17. The emissive display device of claim 16 , wherein the plurality of first nanoparticles have a first average cross-sectional size, the plurality of second nanoparticles have a second average cross-sectional size, and the plurality of third nanoparticles have a third average cross-sectional size, wherein the first average cross-sectional size is greater than the second average cross-sectional size, and the second average cross-sectional size is greater than the third average cross-sectional size.

18. The emissive display device of claim 17 , wherein the plurality of first nanoparticles have a first cross-sectional shape, the plurality of second nanoparticles have a second cross-sectional shape, and the plurality of third nanoparticles have a third cross-sectional shape, wherein the first, second, and third cross-sectional shapes are different.

19. The emissive display device of claim 12 , further comprising:
augmented reality optics optically coupled to the first emissive display element; and
an integrated system coupled to the first emissive display element and configured to provide image data to the emissive display element.

20. The emissive display device of claim 12 , wherein the second metamaterial lens comprises a plurality of second nanoparticles each having a cross-sectional shape comprising one of a circle or an oval and each of the plurality of first nanoparticles have a cross-sectional shape comprising one of a square or a rectangle.

21. The emissive display device of claim 20 , further comprising:
a third emissive display element over the substrate, the third emissive display element to emit a different band of light than the first and second emissive display elements are to emit; and
a third metamaterial lens over at least a portion of a third emissive surface of the third emissive display element, wherein the third metamaterial lens comprises a plurality of third nanoparticles having a different cross-sectional than the plurality of nanoparticles and the second plurality of nanoparticles.

22. The emissive display device of claim 21 , wherein the first emissive display element is to emit a red band of light, the second emissive display element is to emit a green band of light, and the third emissive display element is to emit a blue band of light.

23. An emissive display device comprising:
an emissive display element over a substrate; and
a metamaterial lens over at least a portion of an emissive surface of the emissive dis

Assignees

• Intel Corp

Inventors

• Ahmed Khaled
• Hicks Richmond

Classifications

• H10W90/00

  Package configurations · CPC title

• G02B27/0172

  characterised by optical features · CPC title

• G02B2027/0174

  holographic · CPC title

• C23C16/301

  AIII BV compounds, where A is Al, Ga, In or Tl and B is N, P, As, Sb or Bi · CPC title

• C23C16/45555

  applied in non-semiconductor technology · CPC title