Philips Lumiled 2001

• 1. High Power White LED Technologyfor Solid State LightingPaul S. MartinJ. Bhat, C.-H. Chen, D. Collins, W. Goetz, R. Khare, A. Kim, M. Krames, C. Bhat, C.-Khare,Krames, Lowery, M. Ludowise, G. Mueller, R. Mueller-Mach, S. Rudaz, D. Steigerwald, Ludowise,Mueller-Rudaz,S. Stockman, S. Subramanya, S-C Tan, J. Thompson, T. TrottierSubramanya, S- 1Copyright (c) Lumileds Lighting LLC Company Confidential

2. High Power White LEDsWho is Lumileds Fully integrated light source supplier that co-develops optimized system solutions! LED dice Luxeon Power Light Sources Arrays of High Flux LEDs on a metal core PCB Automotive, Traffic Signals, Signage & Contour Solutions 2 Copyright (c) Lumileds Lighting LLC Company 3. High Power White LEDsOutline Competition in the market for Illumination, Incandescent & Fluorescent Bulbs. LED Metrics Options for making white light from LEDs Lumileds power white LED performance Some interesting demos3Copyright (c) Lumileds Lighting LLC Company 4. Illumination Markets How Much Energy is Used for Lighting In 1999 the US used 3 Trillion kWhr of Electricity! 20% or 600 Billion kWhr of Electicity generated was used in Lighting! Incandescent/Hal. lamps burn 40% of electricity to produce 15% of light! Fluorescent/HID lamps use 60% to produce 85% of light! Illumination market is $60Billion/yr and growing slowly, ~2%/yr 4 Copyright (c) Lumileds Lighting LLC Company 5. Illumination Markets Incandescent Bulbs Incandescent = hot light, emitted from a (tungsten) filament at around 2800oK Disadvantages: mostly infra-red infra- glass vacuum envelope & filament both break easily 1.0 Talk 4445-19 08:30 8/1/2001 32 Copyright (c) Lumileds Lighting LLC Company 33. High Power White LEDs Lumileds LuxeonTM Series B Cyan LED Single Series B Cyan LED can replace an 80W bulb in an 8 traffic ball!130 lm/bulb30 lm/W0.20? $/lm 33Copyright (c) Lumileds Lighting LLC Company 34. High Power White LEDsLumileds LuxeonTM Ring Fixture design by Philips Lighting and Lumileds. 12 Luxeons, ~240 lumens. Ring available Now! 34Copyright (c) Lumileds Lighting LLC Company 35. High Power White LEDs Outline Competition in the market for Illumination, Incandescent & Fluorescent Bulbs. LED Technology and metrics Comparison of options for making white LEDs Lumileds power white LED performance Some interesting demos35Copyright (c) Lumileds Lighting LLC Company 36. High Power White LEDs Evolution of LED Package Technology Power LEDs can handle ~50x power of an Indicator LED!Pmax~0.6-4.0WPmax~0.2-0.4W 9-14 K/W 50 K/W 1998 LumiLeds LuxeonTM1994LumiLeds SnapLEDTM Todays Power LEDPmax~0.1W 150-200 K/W First Power LED 1970 Standard 5mm Lamp1962 First Packaged LEDIndicator LED Indicator LED 36 Copyright (c) Lumileds Lighting LLC Company 37. High Power White LEDsLumileds LuxeonTM Power LED Packages designed to handle 1-5W! High-Power Package: Improved thermal properties Heat sink body with good thermal interface Soft gel inner encapsulant Including power AlInGaN or AlInGaP or Phosphor Converted AlInGaN Chip: qjc~ 12C/WHigh optical efficiency > 95% 37Copyright (c) Lumileds Lighting LLC Company 38. High Power White LEDsPotential Power Savings vs. Traditional Lighting Todays white LEDs are in the ~20-30lm/W range, but still low flux! 100 Incandescent 80 Power Saved (%)Halogen 60CFL 40Fluorescent 20 0 025 5075 100125 150 175200 225 250LED Efficiency (lm/W)38 Copyright (c) Lumileds Lighting LLC Company 39. LED TechnologyIndicator LEDs vs. Power LEDs Indicator LEDs have output powers < ~50mW and Thermal resistances > 50K/W 0 10 InGaN LEDsOperating Point -1 ~450 nm 10Output Power (W) Power LED-2 10Operating Point-3 10"5 mm" LED -4 10-3 -2 -10110 10 1010 10Input Power (W) 39 Copyright (c) Lumileds Lighting LLC Company 40. High Power White LEDs Indicator LEDs vs. Power LuxeonTM LEDs! Luxeons are designed for low thermal resistance & high current density!20InGaN LEDs120 InGaN LEDsd ~530 nmd ~530 nm100 Wall Plug Efficiency (%)16 Power LED Luminous Flux (lm)801260 Power LED 840 "5 mm" LED 420"5 mm" LED 0 0 0 50 100 150 200 0 50 100 150 200 22 Current Density (A/cm )Current Density (A/cm ) 40Copyright (c) Lumileds Lighting LLC Company