Light emitting diodes, components and related methods

Patent metadata

Field	Value
Publication number	US-10290777-B2
Application number	US-201715657027-A
Country	US
Kind code	B2
Filing date	Jul 21, 2017
Priority date	Jul 26, 2016
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

Light emitting diodes, components, and related methods, with improved performance over existing light emitting diodes. In some embodiments light emitter devices included herein include a submount, a light emitter, a light affecting material, and a wavelength conversion component. Wavelength conversion components provided herein include a transparent substrate having an upper surface and a lower surface, and a phosphor compound disposed on the upper surface or lower surface, wherein the wavelength conversion component is configured to alter a wavelength of a light emitted from a light source when positioned proximate to the light source.

First claim

What is claimed is:

1. A light emitter device comprising:
a submount comprising an upper surface and a bottom surface;
one or more light emitters disposed on the upper surface of the submount, the one or more light emitters comprising an upper surface and one or more sides;
a light affecting material disposed on the upper surface of the submount and adjacent to the one or more sides of the one or more light emitters; and
a wavelength conversion component disposed on the upper surface of the one or more light emitters, wherein the wavelength conversion component comprises a transparent substrate comprising an upper substrate surface and a lower substrate surface, and a spray-coated phosphor material disposed on at least one of the upper substrate surface or the lower substrate surface.

2. The device of claim 1 , wherein the transparent substrate comprises sapphire.

3. The device of claim 1 , wherein the phosphor material comprises a mixture of phosphor and silicone.

4. The device of claim 1 , wherein the phosphor material is substantially uniformly applied to the transparent substrate and/or is conformal to the transparent substrate.

5. The device of claim 1 , further comprising a clear layer between the wavelength conversion component and the upper surface of the one or more light emitters.

6. The device of claim 5 , wherein the clear layer comprises a silicone and/or an adhesive, and optionally comprises a scatter compound.

7. The device of claim 6 , wherein the scatter compound comprises fumed silica, fused silica, and/or TiO 2 .

8. The device of claim 1 , wherein the light affecting material comprises a reflective material.

9. The device of claim 1 , wherein the light affecting material comprises TiO 2 .

10. The device of claim 1 , further comprising one or more electrically conductive contacts disposed on the bottom surface of the submount.

11. The device of claim 1 , further comprising one or more electrical traces on the submount, wherein at least one light emitter is electrically connected to the one or more electrical traces.

12. The device of claim 1 , wherein the spray-coated phosphor material is further disposed on a sidewall of the transparent substrate.

13. A wavelength conversion component, comprising:
a transparent substrate having an upper surface and a lower surface; and
a spray-coated phosphor material disposed on the upper surface and/or lower surface, wherein the phosphor material is configured to alter a wavelength of a light emitted from a light source when positioned proximate to the light source.

14. The component of claim 13 , wherein the transparent substrate comprises sapphire.

15. The component of claim 13 , wherein the phosphor material comprises a mixture of phosphor and silicone.

16. The component of claim 13 , wherein the phosphor material is substantially uniformly applied to the transparent substrate and/or is conformal to the transparent substrate.

17. A light emitter device comprising:
a submount comprising an upper surface and a bottom surface;
one or more light emitters disposed on the upper surface of the submount, the one or more light emitters comprising an upper surface, and one or more sides;
a light affecting material disposed on the upper surface of the submount and adjacent to the one or more sides of the one or more light emitters;
a wavelength conversion component disposed on the upper surface of the one or more light emitters; and
a lens disposed over and/or affixed to the upper surface of the submount and extending above the one or more light emitters, wherein the lens encloses and surrounds the light affecting material.

18. The device of claim 17 , wherein the wavelength conversion component comprises a transparent substrate comprising an upper substrate surface and a lower substrate surface, and a phosphor material disposed on at least one of the upper substrate surface or the lower substrate surface.

19. The device of claim 18 , wherein the phosphor material comprises a mixture of phosphor and silicone.

20. A light emitter device comprising:
a submount comprising an upper surface and a bottom surface;
one or more light emitters disposed on the upper surface of the submount, the one or more light emitters comprising an upper surface and one or more sides;
a light affecting material disposed on the upper surface of the submount and adjacent to the one or more sides of the one or more light emitters; and
a wavelength conversion component disposed on the upper surface of the one or more light emitters, wherein the wavelength conversion component comprises a transparent substrate comprising an upper substrate surface and a lower substrate surface, and a phosphor material disposed on at least one of the upper substrate surface or the lower substrate surface;
wherein the submount further comprises electrical traces that are electrically connected to the one or more light emitters, and one or more contacts that are electrically connected to the electrical traces and wherein the one or more contacts are uncovered by the light affecting material.

21. The device of claim 20 , wherein the one or more contacts comprise at least one cathode and at least one anode for the light emitter device.

22. The device of claim 20 , further comprising a quick response (QR) code or a bar code arranged between the one or more contacts and that is configured to contain information about the light emitter device.

23. A light emitter device comprising:
a submount comprising an upper surface, a bottom surface, and a first contact and a second contact on the upper surface;
one or more light emitters disposed on the upper surface of the submount, the one or more light emitters comprising an upper surface and one or more sides;
a light affecting material disposed on the upper surface of the submount and adjacent to the one or more sides of the one or more light emitters, wherein the first contact and the second contact are uncovered by the light affecting material;
a wavelength conversion component disposed on the upper surface of the one or more light emitters; and
a quick response (QR) code arranged on the upper surface of the submount.

24. The device of claim 23 , wherein the QR code is arranged between the first contact and the second contact.

25. The device of claim 23 , wherein the wavelength conversion component comprises a transparent substrate comprising an upper substrate surface and a lower substrate surface, and a spray-coated phosphor material disposed on at least one of the upper substrate surface or the lower substrate surface.

Assignees

• Cree Inc

Inventors

• Andrews Peter Scott
• Reiherzer Jesse Colin
• Abare Amber C

Classifications

• H10W90/724

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H10W90/00

  Package configurations · CPC title

• H01L2933/0058

  Electricity · mapped topic

• H01L25/0753

  Electricity · mapped topic

• H01L33/505

  Electricity · mapped topic