IP Library › Granted Patent US 9,816,691
Granted Patent B2
US 9,816,691 · App. 15/228,924 · Granted Nov 14, 2017

Method and system for forming LED light emitters

Inventor: Xiantao Yan (Palo Alto, CA)
Assignee: LedEngin, Inc.
F21V19/003F21K9/90F21V5/007F21V5/04F21V9/16F21V21/14F21V23/005F21V29/70H01L25/0753H01L33/08H01L33/48H01L33/647H05K1/0204H05K1/0278H05K1/0283H05K1/0306H05K1/144H05K1/189H05K3/0061H05K3/0097H05K3/4688F21Y2101/00F21Y2105/10F21Y2115/10H01L33/58H01L2924/0002H05K3/4626H05K2201/042H05K2201/0909H05K2201/09127H05K2201/09263H05K2201/10106H05K2201/10121H05K2203/0143H05K2203/171
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Quick Facts
Patent No.
US 9,816,691
App. No.
15/228,924
Granted
Nov 14, 2017
Kind
B2
Abstract

A flexible sheet of light-emitting diode (LED) light emitters includes a support substrate having a thermally conductive material. The flexible sheet of LED light emitters also has an LED emitter sheet overlying the support substrate, and the LED emitter sheet including a plurality of LED light emitters. The flexible sheet of LED light emitters also has a flexible circuit sheet overlying the LED emitter sheet, and a phosphor sheet overlying the flexible circuit sheet. The phosphor sheet includes a wave-length converting material. The flexible sheet of LED light emitters also has a lens sheet overlying the phosphor sheet. The lens sheet includes a plurality of lenses.

Claims (42)

1. A flexible sheet of light-emitting diode (LED) light emitters, comprising:

a flexible support substrate including a thermally conductive material;

a plurality of LED light emitters overlying the flexible support substrate;

a flexible circuit sheet coupled to the plurality of LED light emitters;

a phosphor layer overlying the plurality of LED light emitters, the phosphor layer including a wave-length converting material; and

a plurality of lenses overlying the phosphor layer.

2. The flexible sheet of LED light emitters of claim 1 , wherein each of the plurality of LED light emitters comprises multiple LED dies.

3. The flexible sheet of LED light emitters of claim 1 , wherein the flexible sheet of LED emitters is also stretchable.

4. The flexible sheet of LED light emitters of claim 1 , wherein the phosphor layer comprises a plurality of phosphor regions, each of the phosphor regions is aligned to a corresponding one of the plurality of LED light emitters.

5. The flexible sheet of LED light emitters of claim 1 , wherein each of the plurality of lenses is aligned to a corresponding one of the plurality of LED light emitters.

6. The flexible sheet of LED light emitters of claim 1 , wherein the plurality of lenses are singulated from a lens sheet comprising pre-formed notches between adjacent lenses.

7. The flexible sheet of LED light emitters of claim 6 , wherein the lens sheet comprises separate lenses.

8. The flexible sheet of LED light emitters of claim 1 , wherein the plurality of LED light emitters are singulated from an LED emitter sheet comprising a ceramic substrate with pre-formed notches between adjacent emitters.

9. The flexible sheet of LED light emitters of claim 1 , wherein the plurality of LED light emitters comprises separate LED emitters.

10. The flexible sheet of LED light emitters of claim 1 , wherein the plurality of LED light emitters are inorganic solid-state based LED light sources.

11. A flexible sheet of light-emitting diode (LED) light emitters, comprising a flexible support substrate, a flexible circuit layer, a flexible phosphor layer, a plurality of LED light emitters, and a plurality of lenses, wherein:

the flexible support substrate includes a thermally conductive material;

the flexible circuit layer includes conductive wires;

the plurality LED light emitters overlies the flexible support substrate;

the plurality LED light emitters are electrically coupled to the flexible circuit layer;

the flexible phosphor layer overlies the plurality LED light emitters; and

the plurality of lenses overlies the plurality LED light emitters.

12. The flexible sheet of LED light emitters of claim 11 , wherein each of the plurality of LED light emitters comprises multiple LED dies.

13. The flexible sheet of LED light emitters of claim 11 , wherein each of the plurality of lenses is aligned to a corresponding one of the plurality of LED light emitters.

14. The flexible sheet of LED light emitters of claim 11 , wherein the plurality of lenses are singulated from a lens sheet comprising pre-formed notches between adjacent lenses.

15. The flexible sheet of LED light emitters of claim 11 , wherein the plurality of LED light emitters are singulated from an LED emitter sheet comprising a ceramic substrate sheet with pre-formed notches between adjacent emitters.

16. The flexible sheet of LED light emitters of claim 11 , wherein the flexible sheet of LED light emitters is also stretchable.

17. The flexible sheet of LED light emitters of claim 11 , wherein the flexible circuit layer is also stretchable.

18. The flexible sheet of LED light emitters of claim 17 , wherein the flexible circuit layer comprises conductive wires that are in zig-zag form.

19. The flexible sheet of LED light emitters of claim 11 , wherein the plurality of LED light emitters are inorganic solid-state based LED light sources.

20. The flexible sheet of LED light emitters of claim 11 , wherein the flexible circuit layer is disposed under the plurality of LED light emitters.

21. The flexible sheet of LED light emitters of claim 11 , wherein the flexible circuit layer is disposed over the plurality of LED light emitters.

22. The flexible sheet of LED light emitters of claim 11 , wherein the flexible circuit layer is disposed under the plurality of LED light emitters, and a second flexible circuit layer is disposed over the plurality of LED light emitters.

23. A flexible sheet of light-emitting diode (LED) light emitters, comprising:

a flexible circuit sheet, the flexible circuit sheet including conductive wires;

a plurality of LED light emitters electrically coupled to the flexible circuit sheet;

a phosphor material overlying each of the plurality of LED light emitters, the phosphor material including a wave-length converting material; and

a plurality of lenses, wherein each of the plurality of lenses is aligned to a corresponding one of the plurality of LED light emitters.

24. The flexible sheet of LED light emitters of claim 23 , wherein each of the plurality of LED light emitters comprises multiple LED dies.

25. The flexible sheet of LED light emitters of claim 23 , further comprising a flexible support substrate.

26. The flexible sheet of LED light emitters of claim 25 , wherein the flexible support substrate comprises a thermally conductive material.

27. The flexible sheet of LED light emitters of claim 25 , wherein the flexible support substrate is disposed under the flexible sheet of LED light emitters.

Assignments (2)
MERGER Recorded Jul 28, 2026
From: LEDENGIN INC.
To: OSRAM SYLVANIA INC.
Reel/Frame 076077/0285 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 5, 2016
From: YAN, XIANTAO
To: LEDENGIN, INC.
Reel/Frame 039358/0910 →
Continuity (6)
Continuation 14940025 · Nov 12, 2015
Continuation 14712734 · May 14, 2015
Continuation 14539863 · Nov 12, 2014
Division 13781095 · Feb 28, 2013
Provisional Application 61606355 · Mar 2, 2012
Related Publication 20160341402A1 · Nov 24, 2016