Fun look at the question if the LED lamps that are going in all the LED TV platforms can cut it in general lighting applications.

1. Will Your TV Light Your House?
Mark_McClear@cree.com
October 27, 2010

2. Copyright © 2010 Cree, Inc. pg. 3
Major New LED Application

3. Copyright © 2010 Cree, Inc. pg. 4
Cool, But Can This Class of LED Light Your House?
• What features are needed
for general illumination?
– Brightness/efficiency
– Lifetime (LM-80)
– Chromaticity
• Right color (ANSI)
• Stay the right color
• Right binning
– Low thermal resistance
– Standards conformance
– Application-specific
(some apps)
• Compatibility with
secondary optics
• High color rendering
– Right support
• Distribution, applications eng,
app notes, data, data, data…

4. Copyright © 2010 Cree, Inc. pg. 5
Cool, But Can This Class of LED Light Your House?
• What features are needed
for general illumination?
– Brightness/efficiency
– Lifetime (LM-80)
– Chromaticity
• Right color (ANSI)
• Stay the right color
• Right binning
– Low thermal resistance
– Standards conformance
– Application-specific
(some apps)
• Compatibility with
secondary optics
• High color rendering
– Right support
• Distribution, applications eng,
app notes, data, data, data…
What’s Happening…
LM-80 @ 85˚C, IF max
•L70 vs. L50
L70
L50
Package
Degradation
Chip
Degradation

5. Copyright © 2010 Cree, Inc. pg. 6
☼ Brightness

6. Copyright © 2010 Cree, Inc. pg. 7
☼ Brightness

7. Copyright © 2010 Cree, Inc. pg. 8
☼ Brightness

8. Copyright © 2010 Cree, Inc. pg. 9
☼ Brightness

9. Copyright © 2010 Cree, Inc. pg. 10
…What Else is Happening…?
• What features are needed
for general illumination?
– Brightness/efficiency
– Lifetime (LM-80)
– Chromaticity
• Right color (ANSI)
• Stay the right color
• Right binning
– Low thermal resistance
– Standards conformance
– Application-specific
(some apps)
• Compatibility with
secondary optics
• High color rendering
– Right support
• Distribution, applications eng,
app notes, data, data, data…
?
?

10. Copyright © 2010 Cree, Inc. pg. 11
☼ Hue

11. Copyright © 2010 Cree, Inc. pg. 12
☼ Hue

12. Copyright © 2010 Cree, Inc. pg. 13
☼ Hue

13. Copyright © 2010 Cree, Inc. pg. 14
☼ Hue

14. Copyright © 2010 Cree, Inc. pg. 15
ANSI C78.377A~7-step MacAdams
~2-step MacAdams
Must Match Incumbent Color Consistency
Cree EasyWhite™
~2/4-steps
XLamp MC, MP
~4-step MacAdams
XLamp ML, MX, XP

15. Copyright © 2010 Cree, Inc. pg. 16
Long Learning Curve
in Binning…
2007
2009
2006
ANSI C78.377-2008 3000K Quadrangle
2010
2-step
4-step

16. Copyright © 2010 Cree, Inc. pg. 17
150mm
2x increase in die
per wafer
Cost is a Learning Curve Also…
100mm

17. Copyright © 2010 Cree, Inc. pg. 18
FIXTURESLAMPS
Lighting Is Not One Application
Fitting the LEDs to the application yields better
results than forcing the application to the LEDs…
MX-6 MC-E
MP-L
MP-L
MX-3 MX-6
ML-E
ML-EXP-G
XP-G
XP-G
XP-E XP-EXP-E
XP-E
XP-E
XP-C
XM-L
LMR4
Lighting-Class LEDs are Not One Product

18. Copyright © 2010 Cree, Inc. pg. 19
How About This Other Stuff…?
• What features are needed
for general illumination?
– Brightness/efficiency
– Lifetime (LM-80)
– Chromaticity
• Right color (ANSI)
• Stay the right color
• Right binning
– Low thermal resistance
– Standards conformance
– Application-specific
(some apps)
• Compatibility with
secondary optics
• High color rendering
– Right support
• Distribution, applications eng,
app notes, data, data, data…
?
10x higher Rth (˚C/W)
Product breadth
Don’t Underestimate
this one!!
Not Trivial ?
?
?

19. Copyright © 2010 Cree, Inc. pg. 20
• No.
• Lighting-class LEDs will
• New suppliers will enter the
space, but be cautious as
they come down the learning
curve to Lighting-class
– New chips
– New packages
– New phosphors
– New standards
– New applications
– New support requirements
So, Will Your TV Light Your House?
XLamp XP-E
XLamp MC-E
XLamp XR-E
XLamp XP-G
XLamp MP-L
XLamp XP-C
XLamp MX-6 XLamp ML-E“Welcome To The Party, Pal”
(No remote button for that…)

20. Copyright © 2010 Cree, Inc. pg. 21