Industry and University Partnership:
Solid State Lighting and Display Center
Steven DenBaars, Shuji Nakamura, Umesh
Mishra, Jim Speck, Evelyn Hu, Claude
Weisbuch, Chris Van de Walle, Pierre Petroff,
Tony Cheetham, Fred Lange
Solid State Lighting and Display Center
Materials and ECE Departments
University of California, Santa Barbara
10 Industrial Partners
UC Santa Barbara
Solid State Lighting & Display Center
Industry Partners
Matsushita Electric Industrial Co., Ltd.
SSLDC Faculty
Shuji Nakamura
-Inventor GaN blue LED & laser
Umesh Mishra
- Device fab
James Speck
-MBE/TEM
Evelyn Hu
-Nanostructures
-Photonic X’tal
Steven DenBaars
-Epitaxial growth
Chris Vandewalle
-Elec. Theory
Pierre Petroff
-QDots
Claude Weisbuch
-Photonic X’tal
Fred Lange
-ZnO
Tony Cheetham
-Phosphors
Solid State Lighting (LED-Based) Goal
•
High efficiency lighting system for
general illumination
•
Solid-state light >80% theoretical
energy efficiency
•
Luminous efficacy
of 200 lm/watt
luminaire
GaN
LED or LD
GaN LED Historical Development
White LED (133)
lm/W
L u m in o u s E fficien cy
(lm /W )
100
Fluorescent
Compact Fluorescent (55LPW)
AlInGaP/GaP
(red,orange,yellow)
AlInGaP/GaP
10
1
0.1
Unfiltered incandescent (13LPW)
AlGaAs/GaAs
GaAsP:N (red)
InGaN
(green)
Thomas Edison’s
first bulb
GaAsP
SiC
(blue)
InGaN
(blue)
InGaN
(blue)
1965 1970 1975 1980 1985 1990 1995 2000 2005
Time (years)
Energy Usage Comparison
Power Used (Watts)
LED and Compact Fluorescent vs. 60Watt Light Bulb Comparison
60
50
60W Bulb
40
30
Compact
Fluor.
LED
20
10
0
Light Source
Large markets > $15 Billion/yr
Cellphones
Traffic signals
Large Displays
TVs (RP & LCD)
Streetlights
Automotive
Center Membership- Company Benefits
• Center member companies will be offered
licensees on a co-exclusive basis for a
period of twelve (12) months from disclosure
of the invention to the University.
• First year Patent costs will be paid by SSLDC
• Member Company chooses its own research
goal
• Member Company can send one Visiting
Researcher a year.
• Board Seat on Industrial Advisory Board
New GaN Inventions by Fiscal Year:
14 new Patents in FY05 plus 14 in FY06
(38 SSLDC patents to date)
25
20
15
SSLDC
10
Total (including nonSSLDC GaN, ZnO)
5
0
2002
2003
2004
2005
2006
SSLDC Key Technologies for Energy Efficient White LED
Conversion Efficiency
Electrical Efficiency
New phosphors
Contacts, semi-polar
Light Extraction Eff.
Internal Q. Efficiency
New ZnO
Semi,nonpolar
ZnO mega-cone
Photonic crystal
SLEO low defect
Inventions per Research Dollar
Research Institution Average1
$2.4 million expended per invention disclosure
Tech Company Rule of Thumb2
$500k expended per invention disclosure
SSLDC
$370k expended per invention disclosure
•
More Productive than Most Universities and Tech Companies!
1. Average from 2001-2003 AUTM licensing surveys.
2. The Economist, October 22, 2005.
Solid-State Lighting
& Display Center
SSLDC ANNUAL REVIEW 2005
Agreement Types
Co-Exclusive vs. Non-Exclusive
• Co-exclusive
SSLDC inventions will only be available to
member companies.
• Non-exclusive
Non-members may also license or option
SSLDC inventions.
Solid-State Lighting
& Display Center
SSLDC ANNUAL REVIEW 2005
Global Warming/Energy Savings Potential
If a 150 lm/Watt Solid State LED source were developed, then
in the United States alone we would:
• Realize $115 Billion cumulative savings by 2025*
• Alleviate the need for 133 new power stations*
• Eliminate 258 million metric tons of carbon*
• Save 273 Tera-Watt-hours/year in energy**
* “The Promise of Solid State Lighting” OIDA Report , 2001, http://www.netl.doe.gov/ssl/PDFs/oida_led-oled_rpt.pdf
**A. D. Little, “Energy Savings Potential of SSL” Report for Dept. of Energy,
http://www.eere.energy.gov/buildings/info/documents/pdfs/ssl_final_report3.pdf