This is the 1st FREE Webinar in our brand NEW 2016 Smart Cities Series. We have started a new series of Webinars to highlight the innovative Smart City Technology now coming to market and the cities implementing it. We discuss the future of Smart Lighting with of one of the world’s leading innovators in LED lighting technology, Plessey Semiconductors and are joined by Plessey’s CEO Michael LeGoff and CTO/COO Dr Keith Strickland.

1. Memoori Webinar – LED’s Lighting the Way
towards smart Cities
Semiconductor approach to integrated lighting
solutions
MICHAEL LEGOFF (CEO)
DR KEITH STRICKLAND (CTO)
11TH MAY 2016

2. 2COMPANY CONFIDENTIAL
Plessey is an innovative technology design and manufacturing company
• Globally recognised British brand
• Innovation and technology centres in Swindon and Plymouth
• Significant manufacturing facilities in Plymouth
• Strong management team and experienced advisory board
World class GaN-on-Silicon light emitting diode (“LED”) manufacturing
technology for the growing solid state lighting (“SSL”) market
• In March 2013 Plessey launched world’s first available GaN on 6-inch silicon LED
products
• GaN on Silicon USPs in conjunction with silicon / IC industry advanced packaging
• Differentiated SSL solutions – Integrated Inteligent (i2LED) approach
• Provides integration solution for smart LED lighting
• Cost advantage over traditional LED manufacturing technologies
• Demonstrating LED performance at >60% WPE
Executive Summary

3. 3COMPANY CONFIDENTIAL
Global Presence
HQ R&D centre Sales office
Plymouth
Swindon
Philadelphia
Florianópolis
Shenzhen
Delhi
Shanghai
Munich
Milan

4. 4COMPANY CONFIDENTIAL
2016 AND ONWARDS
Acquisition of CamGaN provides access
to ground-breaking LED technology
Market-leading sensor technology
developed alongside legacy product sales
Plessey doubles efficacy within the year,
from 32 to 64lm/W
Plessey produces world’s first commercial
LEDs manufactured on 6” (150mm)
diameter silicon substrates
Transfer of experimental recipe onto
production tool completed
Plessey re-launched from the Swindon
and Plymouth facilities
Mainstream GaN-on-Si production
Expanded product range – Power LEDs
Efficacy at 130lm/W, and higher in lab
2013201220112010 2014
Advanced packaging solutions
i2LED technology
14 reactors installation plans
Plessey: An innovative technology company
2015

5. 5COMPANY CONFIDENTIAL
Si
HEAT
GaN on Silicon – Inherent Unique Selling Points
• Better Thermal Performance that provides 3 degrees of leverage
• Lower LED operating temp Higher reliability
• Simpler heat sink  Lower system cost
• Higher drive current  cost down through more lumens per die area
• Improved Hot-Cold factor
• Focussed light emitting surface (smaller etendue)
• Surface emitter V.S. volume emitter: How “spread out” the light is
• Simpler and lower cost optical system
• Better lm/W maintenance when scaling up die size
• Better uniformity
• Better process control for target wavelength
• Higher wavelength binning yield Lower cost for LEDs with tight
binning requests
• Sharper wavelength peak for big die
• Better colour control for a high power LED
Si 149 W/m·K
Sapphire 27 W/m·K
LIGHT
Si
Light absorption
→ Efficiency loss~20% efficiency drop ~2% efficiency drop
Our GaN-on-Si
Typical GaN-on-Sapphire
Wavelength Std Dev
Consistent PL wavelength standard deviation of < 3nm, typical 2.5nm.
Wafer bow is within a tight range of 0 um  10um
Si
Si
Si
mirror
Simple mesa Vertical Thin Film

6. 6COMPANY CONFIDENTIAL
n-up VLED Chip
on Si
Chip Scale
Packaging
Wafer Level
Packaging
GEN 1: Vertical LED
GEN 2: Segmentation/ Chip Scale Optics and
Advanced Packaging
GEN 3: Wafer Scale Packaging
&TSV
Intelligent LED
Monolithic
Si-Integration
GEN 4: Active
Sub-mount
• Double bottom contacts
• Active bonded wafer
• Addressable arrays
• Zener Diode
• Low Power regulation
• Photodiodes• Mount on Silicon
• n-Up VLED with wire bond
• Two bottom contact
• Wafer level phosphor
dispense
• TSV-Through Silicon Vias
• Wafer scale LED to sub-
mountHV
Segmentation
• VHA process
• Segmented LED on chip
On-Chip Diagnostics & Controls for
• Temperature
• Intensity
• Spectrum
• ESD
Connectivity & Communications
Micro displays
Hi-Voltage (>48V) DC / AC LEDs for
system level benefits in
• Retrofits (space constraint)
• Driver efficiency
• Automotive
High Density LED Arrays for
• Automotive Headlamps
• Intelligent LED Displays
• Power Projection Sources
• Cost Reduction by Scaling to 8” Si
• Large Area LEDs
• Surface Emission
• Superior Thermal Performance
• Competitive performance
• No Wire Bonds (Hi Reliability)
• Flat Top for Direct Optical Attach
• Optimized Active Area Usage
• No Far Field Wire Bond Shadow
• Low Contact Resistance,
• Good thermal resistance
Technology Roadmap
Chip Scale Optics
and Reflectors
• White light beam shaping
• Reduced secondary optics
• Size and format
• System cost advantages
• Greater design freedom
• Spots
• Hi Bays
• Stadiums
• On Chip white light
• Collimation potential down
to 10 degrees

7. Thank You