LED LED ((//))

Whats LED ?LEDLED Backlight

LED

Prepared by Chen Chin-nan 2006

Whats LED?

LEDLEDLEDLEDEx. Ex. RR..GG..BB.. Ex. Ex. UVUV & & IRIR

1. III-VII-VIIV-

IVI-II-VI2. ()

3.

: nm (=10-9m,DNA)

Applications of LED

LEDLCD(Backlight)

2003 2004 2005 2006 2007

PSP

PDA

LED Notebook

LED Monitor

LED TV

LED in Backlight

(CCFL)(LED)

CCFLCCFL LEDLED

(70~100 cd/m

2) 6~10

(R.G.B.)

36

70~80 lm/w 50~60 lm/w (>100 lm/w)

300V 5V

CCFL

Key PointKey Point

Key PointKey Point(1) Chip (1) Chip (2) Package(2) Package(3) Phosphor(3) Phosphor

LED

(, )

(+)

()

(or)

P & N

Microsoft PowerPoint

Adobe Acrobat Document

Adobe Acrobat Document

Q & A

QQororchipchip??

AA(ex. UV or(ex. UV or)),,

(lm/w)

(;lm)

Junction Temp.

Junction Temp.()

White LED Color Shift

0.270

0.280

0.290

0.300

0.310

0.320

0 10 20 30 40 50 60 70 80 90 100 110

Temperature

Chr

omat

icity

Coo

rdin

ate

Ccx

Ccy

, (X,Y)- Ccx : 0.000417/degree- Ccy : 0.000429/degree

Source: Unity Opto.

LiteonGE LightingJun. 2006

LED HID

Lm/US$ 15 1,000 1,000 750 500

LED (lm/w) 10 15 55 85(K hrs.) 3 3 100 15

LED vs. OLED

LEDLED OLEDOLED

() ()

LED

100nm

LEDTFT

OLEDOLED()

OLED

(HTL) (ETL)

(-)

(+)

substrate

ITO Layer

OLED

LED (/)Whats LED?Applications of LEDLED in BacklightLEDQ & AJunction Temp.White LED Color Shift LED vs. OLEDOLED

LED (/)

Whats LED ?LEDLED Backlight LED

Prepared by Chen Chin-nan 2006

Whats LED?

III-VII-VIIV-IVI-II-VI()

LED

LED

Ex. R.G.B.

Ex. UV & IR

: nm (=10-9m,DNA)

Applications of LED

2003

2004

2005

2006

2007

LEDLCD(Backlight)

PSP

PDA

LED Notebook

LED Monitor

LED TV

LED in Backlight

(CCFL)(LED)

Key Point

CCFLLED (70~100 cd/m2)6~10(R.G.B.) 3670~80 lm/w50~60 lm/w (>100 lm/w)300V5V CCFL

Key Point(1) Chip (2) Package(3) Phosphor

LED

(or)P & N

(, )

(+)

()

(LPE)(MBE)(MOCVD)MOCVD ( Metal Organic Chemical Vapor Deposition ) MOVPE , OMVPE , OMCVD

MOCVD

Wafer

-(750C~1100C)

-(10~100 Torr)

(Substrate)GaAs, Sapphire, InP(MO)TMA, TMG, TMINH3(Hydride)PH3, AsH3CP2Mg, DMZn, SiH4(Carrier Gas)H2(Purge Gas)N2(Epitaxy)(Substrate)300~350um(Doping) P(N)()(Active layer) (Buffer layer)

Q & A

Chip Basic Structure

MOCVDLED

4~5 hr90(), 1~21()LED,LD,HBT

Q & A

Qorchip?

A(ex. UV or),

(lm/w)(;lm)

Junction Temp.

Junction Temp.()

White LED Color Shift

, (X,Y)

- Ccx : 0.000417/degree

- Ccy : 0.000429/degree

Source: Unity Opto.

Chart120203030404050506060707080809090100100CcxCcyTemperatureChromaticity Coordinates0.31066666670.30733333330.3090.30566666670.30533333330.30266666670.30233333330.29933333330.29866666670.29633333330.29433333330.29266666670.28933333330.28666666670.2840.28066666670.27733333330.273Sheet1Package:MSL-299SWResult:123AVGTemp.CcxCcyCcxCcyCcxCcyCcxCcy200.3060.30.3120.3110.3140.3110.3110.307300.3050.2990.310.3090.3120.3090.3090.306400.3010.2960.3070.3060.3080.3060.3050.303500.2990.2930.3040.3040.3040.3010.3020.299600.2950.290.30.30.3010.2990.2990.296700.2910.2870.2950.2960.2970.2950.2940.293800.2860.2820.2910.290.2910.2880.2890.287900.2810.2750.2860.2850.2850.2820.2840.2811000.2750.2680.2790.2770.2780.2740.2770.273CcxCcyMax-Min.0.0330.03480800.00041666670.00042916670.00416666670.0042916667From:Kent 12/22/05Sheet1TemperatureCcxSheet2TemperatureCcySheet3CcxCcyTemperatureChromaticity Coordinates0.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.280.290.30.280.290.30.290.30.310.290.30.310.280.290.30.290.30.290.30.30.310.30.310.290.3S-VP-DW-HX-NColor Coordinate Comparison0.270.290.310.320.280.30.320.330.290.310.330.340.280.30.320.330.270.290.310.320.260.280.30.310.270.290.310.320.280.30.320.330.270.290.310.320.260.280.30.310.250.270.290.30.260.280.30.310.270.290.310.320.260.280.30.310.250.270.290.30.240.260.280.290.250.270.290.30.260.280.30.310.250.270.290.30.240.260.280.290.250.270.280.260.280.290.270.290.30.260.280.290.250.270.280.260.270.270.280.280.290.270.280.260.2720203030404050506060707080809090100100CcxCcyTemperatureChromaticity Coordinates0.31066666670.30733333330.3090.30566666670.30533333330.30266666670.30233333330.29933333330.29866666670.29633333330.29433333330.29266666670.28933333330.28666666670.2840.28066666670.27733333330.2730.270.280.290.30.31066666670.270.280.290.30.3090.280.290.30.310.30533333330.280.290.30.310.30233333330.270.280.290.30.29866666670.270.280.290.30.29433333330.270.280.290.30.28933333330.280.290.30.310.2840.280.290.30.310.27733333330.270.280.290.30.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.270.280.290.30.270.280.290.30.280.290.30.310.280.290.30.310.270.280.290.30.280.290.30.280.290.30.290.30.310.290.30.310.280.290.30.290.30.290.30.30.310.30.310.290.3S-VP-DW-HX-NColor Coordinate Comparison0.270.290.310.320.30733333330.280.30.320.330.30566666670.290.310.330.340.30266666670.280.30.320.330.29933333330.270.290.310.320.29633333330.260.280.30.310.29266666670.270.290.310.320.28666666670.280.30.320.330.28066666670.270.290.310.320.2730.260.280.30.310.250.270.290.30.260.280.30.310.270.290.310.320.260.280.30.310.250.270.290.30.240.260.280.290.250.270.290.30.260.280.30.310.250.270.290.30.240.260.280.290.250.270.280.260.280.290.270.290.30.260.280.290.250.270.280.260.270.270.280.280.290.270.280.260.27

LiteonGE LightingJun. 2006

LEDHIDLm/US$151,0001,000750500LED(lm/w)10155585(K hrs.)3310015

LED vs. OLED

LEDOLED()() LED100nmLEDTFTOLEDOLED()

OLED

(HTL)

(ETL)

(-)

(+)

substrate

ITO Layer

OLED

60.unknown62.unknown

Microsoft

PowerPoint

Adobe Acrobat

Document

0.270

0.280

0.290

0.300

0.310

0.320

0102030405060708090100110

Temperature

Chromaticity Coordinates

Ccx

Ccy