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LED 2009.11.03
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LEDLED
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19831997LED
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Total Solution for LEDsHigh Power LEDsSurface Mount LEDsLED Lamp AssemblySignage LEDsPhoto couplerLight BarLED ModulesLED Lamps and DisplayInfrared (IR) Components
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LED LEDLED
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LEDLEDLED MR16LED
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LEDLED
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1962 1970 ~ 1991 1995 1996 2002.09 2004.11 2006 2007Shuji NakamuraGaN1995GaNLEDLED1996InGaNLEDLEDLEDLED
GELED5mm LAMPAlGaInPLED(HP+)InGaNLED(Nichia)YAGLED(Nichia)LEDLCD TV100lm/WLED(Nichia)LED(Lexus)
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LEDLED19931996LED1983LED 1975 1983 1993 1996 2000 2003 2005.12 2007.3 2008 2009LED
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LEDECEVEgECEVEgl=1240Egl=1240EgP-cladding(AlXGa1-X)0.5In0.5P N-claddingCurrent SpreadingContact Active Layer(Junction)EpiSubstrateBasic LED StructureEnergy Release
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LED Chip structureLED structureCathode LeadFlat Spot Anode Lead Lead Frame Wire Bond Epoxy Lens SemiconductorChip Epoxy CaseReflective CupLED
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LEDLED
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LEDLAMPSMD
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LEDChip & PhosphorWhite LightGenerationCRISingleChipBlue LEDInGaN + YAGBlue light + Yellow phosphor60-75%UV LEDInGaN + RGB phosphorUV + RGBphosphors90% upBlue LEDInGaN + RG phosphorBlue + RG phosphors90%MultiChipRGB multi-chip LEDAlInGaP +InGaN + AlGaAsRGB compensation 80% up
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Chip AbilityPhosphor EfficiencyEncapsulation Refractive IndexReflective Material ReflectancePackage DesignEX : Different Current SpreadingEX : Different Particle SizeRI=1.4 RI=1.5LED
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Sulfidizing GasCrackDelaminationFailed orOver 5% brightness decayAg frame color changes(over 5% brightness decay)Failed orOver 5% brightness decayPPAPPA color changes (over 5% brightness decay)LED
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Test package : 50215 (3014)Sulfur & Water prevention How to prevent sulfur & moisture penetrationSilicone with higher hardness & higher refractive index can prevent moisture & sulfur penetration.RIO2 (cm3 / m2 / 24h / atm )CC / 241HardnessADA0A100D0D100
RI1.41.41.51.51.5HardnessA 50A 70A 55 D 35D 75H20 (g/m2/24h)1008050202O2 (cm3/m2/24h/atm)36000220005500900130Sulfur test
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Substrate SolutionCeramicPPA Al2O3 or AlNLowBestCostReflectanceNormalLevel 3 ~ Level 2StabilityMSLHighGoodCostReflectanceBestLevel 2 ~ Level 1StabilityMSLProduct TypeProduct Type
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Everlight ability to reduce CIE difference at different viewing angle.200820092010~70lmOld TypeShuenTop ViewSide View120lmImprove over 10%Ceramic300lm @350mA10.5V (3.5W)C07FCeramic540lm @600mA13V (8W)C16TCeramic + Spray coating + silicone moldingPhosphor coating technology
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2009LED TV65LEDSonySharpLGVizioTCLLED TVLED TV
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LED LEDCCFL LEDCCFL LED 2010LED 85%2010LED 5%2010LED 10%Notebook160,000K Monitor170,000KTV150,000KLED
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LED BacklightCCFL Backlight1,000,000:11,000:1LED1cmLEDNTSC>105%~75%30%~50%
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LEDLED2009LED TV2010LEDTVLED630(115 (34 (12 (: Macquare Research 2009/JulyLED
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LED2007 LED NT480LED
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LEDLEDCan incorporate heatsink and secondary opticsLEDLight engines incorporate additional optics, LED driver, wire, and circuitryLEDComplete lighting unit including light source and housingIncorporate software, dimmer, and bus systemLED
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