1. ПАНКРАШКИН АЛЕКСЕЙ ВЛАДИМИРОВИЧ 196105, Россия, г. Санкт-Петербург, ул. Свеаборгская д.12, 50H pankrashkin@intech-eng.ru www.intech-eng.ru

2. Defining Ultraviolet Radiation 280 315 10010400 LED Regions © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV MARKET OVERVIEW DEFINING ULTRAVIOLET RADIATION

3. Defining Ultraviolet Radiation © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV MARKET OVERVIEW TRADITIONAL Hg UV SOURCE

4. Defining Ultraviolet Radiation © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV MARKET OVERVIEW Hg ARC LAMP SPECTRAL INTENSITY

5. Defining Ultraviolet Radiation © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV MARKET OVERVIEW UV CURING POLYMERIZATION Base Material UV curable material (oligomer, monomer and photo initiator) Liquid UV Light Source UV LED Lamp Base Material UV Curing Photopolymerization Liquid Base Material UV Cured Material Solid UV curing is application and material specific UV radiation

6. Defining Ultraviolet Radiation © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV MARKET OVERVIEW WHY UV LEDS? UV LEDs Benefits : Discrete Wavelength Longer lifetime/minimal maintenance Consistent/uniform output Instant turn on/off No heat generated as infrared No mercury Low voltage Small footprint to enable design flexibility and portable devices No VOC and odor

7. 4/28/2009 7 UV MARKET OVERVIEW UV MARKET SIZE: UV LED vs UV LAMP

8. LED Chip Package: 2 nd Generation Proposal UV APPLICATION SUMMARY UV APPLICATIONS © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV-C UV-B UV-A Curing (ink, adhesive, coatings) Inspection (anti- counterfeiting UV watermark) Photo Catalyst White LED (UV LED + RGB phosphors) Tanning Medical and Cosmetics Aquariums Medical Phototherapy Drug discovery Reptile Disinfection Sterilization Analytical instruments

9. LED Chip Package: 2 nd Generation Proposal UV APPLICATION SUMMARY UV APPLICATIONS: CURING © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. PrintingCoatings AdhesivesIndustrial Dental 3D Printing Nail Gel Typical wavelengths: 365-420nm

10. LED Chip Package: 2 nd Generation Proposal UV APPLICATION SUMMARY UV APPLICATIONS: INSPECTION/FLUORESCENCE © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SemiconductorsForensics CounterfeitAquarium StructuralEntertainment Typical wavelengths: 365-400nm

11. LED Chip Package: 2 nd Generation Proposal UV APPLICATION SUMMARY UV APPLICATIONS: MEDICAL/HEALTH © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. Phototherapy Surface Sterilization Lab DiagnosticsWater Purification CosmeticAir Purification Typical wavelengths: 254-420nm

12. SEMILEDS’ TECHNOLOGY CHIP STRUCTURE OVERVIEW © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. © 2004 – 2012 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. Sapphire Carrier Horizontal LED chip Structure Traditional LED Structure Low Cost Low Thermal Conductivity Higher Vf Low current threshold Requires more handling (WB) Flip LED chip Structure Good Thermal path High cost Higher UV absorption Capable of high current drive operations High handling/operations difficulty No Wire bond needed Good for high density packaging Vertical LED chip Structure High Light extraction Ideal for high current drive operations Ideal thermal path One directional light emission No UV absorption Ideal for optics

13. SEMILEDS’ TECHNOLOGY UNIQUE CHIP STRUCTURE © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. -Cross section of SemiLEDs Vertical structure on metal alloy chip (Figure not to scale) Advantages: 1.Patented technology 2.Metal substrate Low thermal resistance (<0.25°C/W) 3.Vertical structure Limited side emission ideal for a) flat packages and b) optical control 4.In-house production Stable supply Latest technology © 2004 – 2012 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. Copper Alloy

14. SemiLEDs chip substrate has higher thermal conductivity than commonly seen substrates in the market SemiLEDs metal alloy substrate’s composition consists mainly of copper. © 2004 – 2012 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ TECHNOLOGY SUBSTRATE COMPARISON

15. Others- Sapphire SemiLEDs Vertical The side emission reflecting off package housing Vertical emission increases optical control- more light at target © 2004 – 2012 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SemiLEDs Vertical on Metal Others- Sapphire © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ TECHNOLOGY LIGHT EMISSION SemiLEDs vertical chips exhibit no light loss thorugh the sides, unlike sapphire based chips. This characteristic also maximizes the efficacy of any optical coupling.

16. ModelsPictureSizeWpRadiant powerForward current High Power N3535L-UNx1/ C3535L-UNx1 3.5mm x 3.5mm380-420nm 200-600mW 380-1300mW 350mA 700mA N5050-UNx2 5.0mm x 5.0mm, 4 chips in series 380-420nm 800-2200mW 1400-3300mW 350mA 700mA T9090-UNL2 9.0 mm x 9.0 mm 9 chips in series 380-420nm 1000-5400mW 1800-9500mW 350mA 700mA T7070U-VNG2 7.0mm x 7.0mm, 4 chips in series 365-375nm1000mw~1600mw700mA Modules IUVCOB-xxWxxx 25mm x 30mm x 2.6mm 49 Chips in 7 series/7 Parallel 365-410nm 6-22W/cm 2 at maximum rating 12A UV LED Product List SEMILEDS’ PRODUCTS UV LED Packaged Components © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent.

17. N35/ 60deg (Preliminary) CharacteristicSpecification Wavelength380-420nm (5nm binning) Output PowerUp to 1300mW* Overdrive capability1 - 3.5W Drive current up to 1A Thermal ResistanceRth=4.4°C/W@350mA View angle60 degree primary optics Ideal for UV curing, spot curing, inkjet and digital printers, biotech/medical, counterfeit detection, cosmetic, horticulture, industrial (i.e. photoresist, coatings) *Output power is depends on wavelength *Output power is dependent on wavelength © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ PRODUCTS N3535L: UV LED with 60  Lens

18. S50N-U CharacteristicSpecification Wavelength365-375nm (5nm binning) Output Power150-400mW* Overdrive capability1 - 3W applications Drive current up to 700mA Low Thermal ResistanceRth=4.4°C/W@350mA High ReliabilityUses a glass cover, no silicone degradation Ideal for UV Curing, spot curing, biotech/medical, counterfeit detection, sterilization and purification *Output power is dependent on wavelength © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ PRODUCTS N3535U-VNB1: UV LED with Flat Glass

19. T7070U/60deg CharacteristicSpecification Wavelength365-375nm (5nm binning) Output PowerOver 1600mW @700mA* Overdrive capability9 - 11W applications Drive current up to 700mA Low Thermal ResistanceR th = 3.2 °C/W High ReliabilityGlass lens, no silicone degradation View angle60 degree primary optics Ideal for UV Curing, spot curing, biotech/medical, counterfeit detection, sterilization and purification *Output power is dependent on wavelength © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ PRODUCTS T7070 UV LED with Glass Lens

20. N5050 CharacteristicSpecification Wavelength380-420nm Output Power Over 3300mW* High power density Overdrive capability 5 – 10W Applications Drive current up to 700mA Thermal ResistanceR th < 1.5 °C/W Ideal for UV curing, spot curing, biotech/medical, counterfeit detection, cosmetic, horticulture, printing – inkjet, digital, offset *Output power is dependent on wavelength © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ PRODUCTS N5050 High Power UV LED

21. N5050 CharacteristicSpecification Wavelength380-420nm Irradiance Output Power 6-25W/cm 2* Power20-30W Thermal ResistanceR th < 1.5 °C/W Ideal for UV curing applications (ie: offset and digital printing) requiring high dosage and irradiance. Module design allows for even light uniformity and ceramic submount is ideal for water cooled thermal management systems. *Output power is dependent on wavelength © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. SEMILEDS’ PRODUCTS IUVCOB: High Irradiance UV COB Module

22. LED Chip Package: 2 nd Generation Proposal 2015 PRODUCT ROADMAP SEMILEDS’ PRODUCTS © 2004 – 2015 SemiLEDs Corporation. All rights reserved. Do not distribute without consent. UV System Integration Services UVC LEDs 365nm UV LED 60  Beam Angle, Silicone lens Independently controlled 4 chip package Improve costs Improve efficiencies T7070U- Multi Wavelength /4s1P T7070U- 380-420nm /4s1P T7070U- 380-420nm /1s1P 10W UV LED 10W UV LED with narrow lens