1. Tony Oram, UK Sales Manager - Seoul Semiconductor Evaluating LED lighting solutions

2. Who/Where are Seoul Semiconductor 3 corporate (Japan/Germany/USA) 25 sales offices 90 distributors Seoul Semiconductor Europe GmbH Seoul Semiconductor Inc. Japan Seoul Semiconductor Co.,Ltd Outlets Factories Subsidiary (SOC) HQ (Seoul Semiconductor) Subsidiary (Seoul Optodevice) Tian Jin Factory Ansan Factory Seoul Factory Shenzhen Shanghai Taiwan Nagoya Tokyo LA Detroit New Jersey SET Atlanta Spain Italy Numberg Poland Denmark UK Frankfurt France Netherlands

3. Worldwide- *4th LED manufacturer 3rd White LED manufacture * Strategies unlimited EPA recognized test lab Revenue2010: US$ 1019M Employees: 2932 New Ansan factory, Ramp up May 2011 Who/Where are Seoul Semiconductor

4. Acriche, Power LED, Side View LED, Top View LED, Radial LED, Chip LED, high flux LED, deep UV, near UV, Customized module 3) Broad Portfolio 2) Cost competitiveness Volume production (3.5 billion chips per month) 4) Worldwide production capabilities Technology centers and factories in USA, Korea and China 1) Vertical integration from chip to package EPI growing → FAB (fabrication) → PKG → Custom modules Who/Where are Seoul Semiconductor

5. LED ChipsPackage Module/ Light engine Fixtures SSC Philips, Cree, Osram, Sharp, … Citizen, Everlight Epistar Focus component level SSC will not compete with customers Strategy in LED Value Chain

6. 1.Recent developments within LED industry 2.Testing standardisation by market leaders 3.Assessing light quality by CRI and bin indexing Presentation Overview

7. Lumens per watt current and future Package changes and harmonisation Patents and licensing Recent Developments in the LED Industry

8. Lumens per Watt is a simple ratio of output of luminous flux to input of electrical power Luminous flux Electrical power This measurement can be applied to any light source and finished lighting fixtures From this measurement we can also calculate Lux and Candella values http://www.element-14.com/community/docs/DOC-21394/l/light-conversion-tool Lumens per Watt

9. ParameterSymbol Value Unit MinTypMax Luminous Flux VV 80100120lm Luminous IntensityIVIV 1.01.52.0Cd * Luminous Flux (  V ) - Lumen [lm] * Luminous Intensity (  V ) -Candela [Cd] (lm/sr) Integrating Sphere Buffer Detector LED Detector Measuring Output

10. Current maximum production values are between 100 – 120 lm/W Expected values by end of 2011 using existing technology are 150 lm/W Some press release values are claiming over 200 lm/W however this is not available in the market place Theoretical limit is between 260 and 300 lm/W (dependant on who you talk to) Steady increase in efficacy from 20 lm/W in 2002 Some leaps in technology needed to get to theoretical limit For lighting the efficacy levels are now ‘GOOD ENOUGH’ LED Lumens per Watt

11. Package changes and harmonisation 2010/11 has seen a move away from traditional LED packages Packages with smaller footprints based around ceramic sub-straights are now becoming standard There is also and emergence of footprint compatibility between LED manufactures

12. Patents and Licensing Apart from a few minor issues, Patent and Licensing agreements amongst the big 6 are now in place. Collectively they hold over 90% of all LED Patents Big 6: Seoul Semiconductor Cree Osram Philips Nichea Toyoda Gosei Some issues are still to be resolved on driver and heat management patents. Beware of non patented product or 2012 could get very nasty for YOU

13. Cross license A/C LED lawsuit Patents and Licensing

14. White LED Cross License White and housing patent cross-license agreement Cross-license agreement Strategic Cooperation Patents and Licensing

15. + UCSB in USA And Others +  Global Leading with over 5,500 patents Material Patent Manufacturing/ Methodology Patents Design Patent Exclusive License Nonexclusive License Patents and Licensing

16. Testing standardisation by market leaders LM80 Efficiency rating and Minimum values

17. LM80 There is now universal adoption of LM80 testing by the major LED manufactures LM80 allows direct comparison of expected LED lifetimes and failure rates. LM80 calls for 6000 hours real time testing and projects when an LED will reach the end of its useful life LM80 testing completed at 25, 55 and 85 Deg C Useful life is generally accepted as L70 (70% of original output) for lighting LM80 gives readings over lifetime for: Forward Voltage change Flux (light output) depreciation Colour Shift

18. IF=100mA where R(t)= LED Operating time till “t” λ = Failure rate t = Lifetime λ 1 = Failure rate (TJ = T 1 ) λ 2 = Failure rate (TJ = T 2 ) E A = Vitalization Energy ( eV ) k = Boltzmann's constant (8.617×10 -5 eV/°K) T = Junction temperature °K(°K = ℃ + 273) R(t)=exp(- ג t) LM80

19. Efficiency Rating and minimum values Direct comparison between LED sources is now possible using LM80. As a result LED manufactures are now quoting minimum vales instead of typical values – This is delivering transparency in the market. However comparison between lighting types and lighting fixtures is still a problem UK building regulations in now place for lighting efficiency of 55 lm/W – not just for new build. Refurbishment threshold covered have been lowered from 1000 M/sq to 100 More standards and legislation will be coming into legislation over the next 12 months possible including: EPC – improvements to Energy Performance Certificates Harmonisation of energy calculations and communication Carbon creation calculation, offset and trading. EU ban on traditional incandescent lighting

20. Fluorescent Incandescence Metal Halide Compact Fluorescent Halogen LEDs Relative Lamp Size 46~95 ㏐ /W CRI 62~85 Lifetime 12,000hrs 60~80 ㏐ /W CRI 65 Lifetime 9,000~12,000hrs 20~80 ㏐ /W CRI 82 Lifetime 10,000hrs 8~15 ㏐ /W CRI 100 Lifetime 1,000hrs 16~22 ㏐ /W CRI 100 Lifetime 2,000hrs 60 - 120 ㏐ /W CRI 70~95 Lifetime 50,000hrs Efficiency Rating and minimum values

21. We are all used to seeing Energy rating on electrical goods. Moves are now underway to classify lamps in a similar way. This should include lifetime based on LM80 or similar calculation Will allow a direct comparison between lighting sources and manufactures Once implemented for lamps it is expected that it will be expanded out to non domestic lighting. Efficiency Rating and minimum values aaaaaaa CRI Colour temp 85 3000K 175 Lumens/Watt65 45000 hours lifetime

22. Binning CRI (colour rendering index) Assessing light quality by bin indexing and CRI

25.  6 sub-bins/ ANSI bin  3-Step McAdams Energy Star A B C D E F G H Cold White Neutral White Warm White Various CRI solutions: - Minimum CRI 70 - Minimum CRI 80 - Minimum CRI 90 Assessing light quality by bin indexing and CRI

26. The Colour rendering index (CRI), is a measure of the ability of a light source to reproduce the colours of various objects faithfully in comparison with an ideal or nat ural light source. Light sources with a high CRI value have traditionally been desirable in colour critical applications such as photography and cinematography. High CRI light sources are now been demanded for lighting applications especially for retail and consumer lighting. Assessing light quality by bin indexing and CRI

27. - sunlight CRI 100 - LED CRI 60~95 Ra = average R1 to R8 Assessing light quality by bin indexing and CRI