pdp 개론 및 구동원리 - sadkr.tistory.com · kwangwoon univ. electrophysics kwangwoonuniv. /...

Kwangwoon Univ. Electrophysics/ PDP Research Center0 All contents remain the property of Displaybank and the author Kwangwoon Univ. / PDP research center

/ PDP

[email protected]

http://pdpcenter.kw.ac.kr

PDP PDP

2007 FPD

Kwangwoon Univ. Electrophysics/ PDP Research Center1 All contents remain the property of Displaybank and the author Kwangwoon Univ. / PDP research center 1

1. PDP

1-1. PDP 1-2. PDP 1-3. PDP 1-4. PDP

2. PDP

2-1. PDP 2-2. ADS

3. PDP

4.


Home of tomorrowdisplays are everywhere!


Display Devices

CRT LCD

Rear Projection PDP

http://www.lgeshop.com/jsp/jseip_PrdItm.jsp?ecpid=1171694http://www.lgeshop.com/jsp/jseip_PrdItm.jsp?ecpid=1250402


1-1. PDP

1. Plasma Display Panel


PDP

PDP PDP: Plasma Display Panel

- - 1964 Bitzer and Slottow (Illionis Univ.) .

(AC-PDP . DC type .) gas-discharge devices (1927)

? : .

- Langmuir . (weakly ionized gas) ionization degree

- < 10-4 : weakly ionized plasmas (cold plasmas)- > 10-4 : strongly ionize plasmas (hot plasmas)

PDP: < 10-5

: 4

ee e

ee


. . .

, DC . .

, AC .

PDP

[ DC ]

[ AC ]

[ AC ]


History


Plasma Display Panel

Dielectric layer

MgO layer

Addressing electrode

Sustaining electrode(ITO)

Barrier Ribs

Front glass

Phosphors(RGB)

Bus electrode

PDP

He-Ne(26 %)-Xe(4 %)/Ne-Xe(4 %) 400 torr


(ITO)

(MgO)

SiO2

Bus

()

AC PDP


What is a PDP?

( 1.8 lm/W) PDP :

PDP (40 )

160

A Flat panel display using phosphor luminescence by UV photons emitted from discharge plasmas.

White light emission

DischargeDischargeDischarge


Operation & Research issues

PDP cell uses the mixture gases of Xe, Ne, and He at the pressure rangeof 400 ~ 500 Torr.

Research issues of present PDPs

Low luminous efficiencyHigh power consumptionImage qualityLifetimeHigh price

Present PDPs

1.5 lm/W

CRTs

5.0 lm/W

Future PDPs

Over3.0 lm/WPhosphor layer

Xe* Xe* Xe* Xe*

VUVvisiblelight


What are the merits of PDP?

40 inch40 inch60 inch60 inch

80 inch80 inch

1/10 of CRT1/10 of CRT

1/6 of CRT1/6 of CRT

160160oo or moreor more

Uniformity Uniformity

NN

CRTCRTPDPPDP

SS


Power consumptionPDP is

better !

Image qualityPDP is

better !

Average brightness ~ 500 cd/m2 Peak brightness ~ 1100 cd/m2

LCD TV vs PDP TV


PDP LCD Main Zone

FHD(19201080)

HD(1280768)

SD(640480)

10 15 20 30 40 50 60

Current LCD-TV

Future LCD-TVFuture PDP

Current PDP

70 inch

Main zone of PDP is Larger than that of TFT-LCD - PDP : 40~50 / TFT : 30

Maximum size of PDP is unlimited (PDP 100 / TFT 50)


Display PDP Device.

102nchPDP

102nch102nchPDPPDP

PDP TV (SDI)-102 inch


Power Consumption of PDP and LCD TV


1-2. PDP



ITO-glass

ITO coating .(cf. ITO

) , NaOH Wet-station

ITO

ITO . . DFR PR

( )

, , Wet-station

BUS

BUS ( ) . (Ag paste), (Ag

paste), Cr/Cu(Al)/Cr (, lift-off )

FODEL : paste ( )

Black Stripe

, , BUS

AC-PDP ( )


. . PbO(-SiO2-B2O3) .

: P2O3, B2O3, ZnO, SiO2, Al2O3 .

Green-sheet laminating .

SealingFrit glass

.frit glass .

. (PbO,SiO2,B2O3) + Vehicle(+) Dispenser .

MgO

MgO (7,000) 2

MgO . E-beam evaporation , Ion-sputtering

, Ion-plating .

AC-PDP ( )


Glass

. , NaOH Wet-station

. . BUS . , ,

Wet-station .

. . ZrO2, B3N4, TiO2 .

: P2O3, B2O3, ZnO, SiO2, Al2O3 , green-sheet , ,

.

Black Stripe

. (Pb-B-Si-Al-O) filler

( ) . , , , lift-off

, , . : (-) 10~15

.

AC-PDP ( )


R, G, B .

(Pb-B-Si-Al-O) filler ( ) .

, , , lift-off, , .

: (-) 10~15 .

AC-PDP ( + )

gas

tip-offAging

[]

torch


1-3. PDP (PDP gas discharge)



He

( ~ ns)

E = hv = h/c

(V) (V) (V)

He 21.2

16.5

11.6

9.98

8.45

19.8 58.4 24.6

Ne 16.62 74.4 21.6

Ar 11.55 107 15.8

Kr 9.91 124 14.0

Xe 8.32 147 12.1

Metastable( ~ ms)


Plasma Generation

1) Gases

(eV)

(nsec)

(eV)m

(sec)

(nm)

(eV)

He

Ar

Kr

Xe

Hg

Ne

21.21

16.85

11.61

10.02

8.45

4.89

0.56

20.70

10.20

4.40

3.80

19.80

16.62

11.55

9.91

8.32

4.67

70.8

1.3

1

58.4

73.4

107.0

124.0

147.0

253.7

24.58

21.56

15.76

14.00

12.13

10.43

(6105,210-2)

Xe*(147nm), Xe+Xe*Xe2* (173nm) (Excited Dimer Rad.) Hg : Evaporation temp.(40~140) depends on pressure(10Torr~100Torr)


Elastic Collision &Inelastic Collision

Elastic Collision Cross Section


Impact Ionization Cross Section


R V

Gas

N ~ N0exp(D) : =

A

r

IiIi+J

J

I0A(Ii+J)

I0 = A(I1 + J)J = rA(I1 + J)I0 = [A/(1-rA)]xI1rA = rexp(D) = 1

AC PDP


Secondary Electron Emission Coefficient ()from MgO Protective Layer

i

e

IItCoefficienEmissionElectronSecondary =

Augers potential neutralizationmechanism for law ion energy Eicathode

+

Secondary electron

Ii

Ie=Ii


Einzel Lens

MFC(He,Ne,Ar,Xe Gas)

AcceleratedIon Beam

Thermal or Cold CathodeElectron Source

Heating Filament

Ionized region &Accelerated region

Anode

Source P/S Electric Field

MgOGlass

+100 ~ -100V

A

QuadrupoleDeflector Collector

Copper Pad (Electrode for Discharge)

Gamma-FIB (Focused Ion Beam) Device


lawbreakdownsPashenBpdApdVFinally

energyionizationwhereVBApand

d

eMwhereM

B

iBi

d

'

)11ln(ln

,

:)/exp(

)11ln(

11,1)1(

+

=

=

+=

+===

Cathode (sustain) X Y anode (sustain/scan)

e 1 electron M electrons

d

Volume ionization(avalanches)

(M-1) ions

Secondaryelectronemissionfrom MgO layer

(M-1) electrons

PDP Plasma Breakdown and Self-sustaining Condition


PaschenPaschen Breakdown Characteristics on Electrode gapBreakdown Characteristics on Electrode gap

0 100 200 300 400 500 600 700200

220

240

260

280

300

320

340

360

380

Pressure(Torr)

Firin

g V

olta

ge(V

)

He+Ne+Xe 80m 110m 140m The breakdown voltage

in the PDP cell increases as the electrode gap is increased for given operating gas pressure.

AC-PDPs Breakdown Voltage Paschens Law


Paschen Paschen Breakdown Characteristics in Breakdown Characteristics in NeNe--Xe Xe and Heand He--NeNe--Xe Xe Mixture GasMixture Gas

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0200

240

280

320

360

400Frequency = 50 kHzElectrode Gap =80m

He + Ne 27% + Xe 3%

Ne + Xe (10%)

Ne + Xe 7%

Ne + Xe 4%

Ne + Xe 2%

Ne + Xe 1%

Ne onlyFirin

g V

olta

ge [V

]

Pd [Torr-cm]

The minimum breakdown voltages

are found to be raised up as the Xe

gas mixing ratio to Ne is increased.

AC-PDPs Breakdown Voltage Paschens Law


Experimental results for various gases @ 80 eV ion energy

6 8 10 12 14 16 18 20 22 24 260 .00

0 .02

0 .04

0 .06

0 .08

0 .10

0 .12

0 .14

E io=8 .43eV

H e(E i=24 .58eV )

N e(E i=21 .56eV )

A r(E i=15 .76eV )

N 2(E i=14 .54eV )X e(E i=12 .13eV )

ion ized energy [eV ]

o f M gO s ing le crys ta l

80eV ion energy


1-4. PDP



Monochromator & SFICCD Camera Exp- setup

SFICCD Camera

(V - Tek)

Monochromator (Acton Research co.)

AC-PDP Electro-Optical Characteristics


400 500 600 700 800 9000

10000

20000

30000

40000

50000

60000

70000

Ne 703.2nm

Xe 828nm

Xe 823.2nm

Ne 585nm red phosphor

green phosphorblue phosphor

Ne+Xe(4%)

Inte

nsity

(arb

.uni

ts)

Wavelength (nm)

140 145 150 155 160 165 170 175 180

70000

600Torr

400Torr

200Torr

Wavelength (nm)

Pres

sure

(Torr)

Inte

nsity

(arb

. uni

ts)

Spectral emission from PDP cells : VUV (147, 173nm), IR (823, 828nm)

IR (823, 828nm) Spectrum VUV (147, 173nm) Spectrum

- 49 -

AC-PDP Electro-Optical Characteristics


0 2 4 6 8 10

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

Ion

Den

sity

(x10

11cm

-3)

Xe Mixture Ratio (%)

f = 100 kHzp = 400 Torr

0 2 4 6 8 100.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

pressure = 400 Torrfrequency = 100 kHz

VU

V E

ffici

ency

(arb

.Uni

ts)

Xe Mixture Ratio (%)

Ion density VUV Efficiency

VUV 147nm


Ion density and electron temperature across the gap distance (Y-axis) under He(70%)+Ne(26%)+Xe(4%) mixtures

120m

50m

50m

-150 -100 -50 0 50 100 1500

2

4

6

8

Distance(um)

Tem

pera

ture

(eV)

-6

0

6

12

18

24

30

Density( x10

11cm-3)

Temperature Density

-150 -100 -50 0 50 100 1500

2

4

6

Distance(um)

Tem

pera

ture

(eV)

Temperature Density

2

4

6

8

10

12

14

16

Density( x10

11cm-3)

Ion density and electron temperature across the gap distance (Y-axis) under Ne(96%)+Xe(4%) mixtures

GasIon density

(x1011 cm-3 )Te (eV)

Ternary gas 3.81 ~ 20 1.77 ~ 3.73

Binary gas 8.3 ~ 11.1 1.2 ~ 1.6

PDP (3)


Xe Xe (823.1nm)

0 100 200 300 400 500 600 700 800

0.0

3.0x10116.0x10119.0x10111.2x10121.5x10121.8x10122.1x10122.4x10122.7x10123.0x1012

Exc

ited

Xe

Ato

m D

ensi

ty [

cm-3]

Positon [um]

Ne-Xe (1%) Ne-Xe (4%) Ne-Xe (10%)


700 ns

750 ns

800 ns

900 ns

600 ns

Stripe Barrier rib Closed Barrier ribSustain

Electrode

ITO ITO

710 ns

Anode AnodeCathode Cathode

Spatiotemporal behavior of excited Xe(1s5) atoms density

1000 ns

1200 ns

1300 ns

1400 ns

1500 ns

1100 ns

1600 ns

1700 ns

1800 ns

1900 ns

2000 ns

1.28 x 1013 cm-3 1.45 x 1013 cm-3


2/3 VUV Efficiency

0 2 4 6 8 10 12 14 16

0

5

10

15

20

25

30

VUV

Effic

ienc

y (a

rb. U

nits

)

Xe mixture ratio (%)

400 Torr Ne-Xe (%) He(70%)-Ne-Xe (%)

VUV Efficiency versus XMF at 400 Torr

200 300 400 5000

5

10

15

20

25

30

35

40

45

The relative VUV efficiency has been obtained by dividing the sum of VUV intensities from 140 nm to 180 nm by the discharge power

VUV

Effic

ienc

y (a

rb. U

nits

)

Pressure (Torr)

Xe 15% Ne-Xe(%) He(70%)-Ne-Xe(%)

VUV Efficiency versus pressure at XMF 15%


Decay time of VUV versus gas pressure

The Decay time of VUV 147 nm of Ne-Xe The Decay time of VUV 173 nm of Ne-Xe

200 250 300 350 400 450 5001.51.61.71.81.92.02.12.22.32.42.52.62.7

Dec

ay ti

me

(s)

Pressure (Torr)

4 % 7 % 10 % 15 %

200 250 300 350 400 450 5001.0

1.2

1.4

1.6

Dec

ay ti

me (

s)

Pressure (Torr)

4% 7% 10% 15%


2-1. PDP



Gray scale

Frame

Frame

Frame

Oddfield

Evenfield

FrameSF-1

SF-3SF-2

SF-8

Movies(24 frames/sec)

1 Frame ; 1 1 Frame = 16.7msec ( T=1/f ) 1/60 () .

TV(Interlace scan)(60 frames/sec = Odd + Even field)

Matrix Panel(8sub-field)(60 frames/sec)

Frame

Frame

256 (28)

05 PDP winter school, C. W. Lee, Plasma lamp


Matrix Panel (PDP)

Vd

R

D1 D2 D3 D4

S1

S2

S3

S4

S5

Vs

(threshold)

Vf

Vs

I

V

Ex) Vf = 120 V, Vd, Vs=?

|Vd - Vs | Vf| Vd |, | Vs | < Vf

R=0

700



S1 -Vs0

S2 -Vs0

S3 -Vs0

S4 -Vs0

S5 -Vs0

D1Vd

0

D2Vd

0

D3Vd

0

D4Vd

0

t0 t1 t2 t3 t4 t5 t6 t7 t8

1 Frame

Vd

RD1 D2 D3 D4

S1

S2

S3

S4

S5

Vs

Time duty ratio (m x n cells ; 1/n)- 1 Frame = 16.7 msec (1/60 ; t0 ~ t5)- = duty 1- 4 x 5 cells = duty 1/5- 640 x 480 = 1/480


Memory Type PDP

Refresh Type PDP

1.0

0.1

0.01

0.0011 10 100 1000

Line

Brightness Current, Time

Brightness vs Current, Time


1H 1 frame

Device

1Frame 0.1us 60us 16.7ms

CRT


Display pixel pixel dwell time .Pixel dwell time ; frame time pixel .Ex) m x n display device ,

1) Pixel - at - a - time Pixel dwell time =frame time / (m x n)2) Pixel - at - line - time Pixel dwell time =frame time / n

Display


Sequence (AC-Type)

; Cell ; Scan Addr. data ; X-Y

Fujitsu 42

2.3

7.0

160V

-120V

-360V

130

20 2.5 7180V

0.8

20-356V

-160V

170V

-222V3.55

-160V-122V

8.2 5.3174V

Pioneer 50

Matsushita 42-207V

-125V

420V5

187V

-200V

-270V2.2

VY-VX-VA


Wall charge / wall voltage by a square voltage pulse

VfV appliedV wall

lightcurrent

2. Wall charge growing

+e

+

+

e

e+ e

+ e

+ e+ + ee

+ e+ e

1. Discharge initiation 3. Wall voltage set-up

+ e+ + ee+ e+ e

+e

1 2 3

VVcellcell = = VVappliedapplied ++VVwallwall

V

05 PDP winter school, J. J. Koz, FTLab


Memory Effect Wall Charge Memory

+- ++ ---+

X-

+

Y

A

+-++

---+

X-

+

Y

A

+

-

++

--- +

X-

+

Y

A

+

-

++

-

-

-

+

X-

+

Y

A

Qw+- ++--- +

X+

Y

A

- + -+ + ---X

+Y

A

Qw

-+

X

A

Y

X

A

Y

X

A

Y

Selection by the discharge btw Y and A electrode

Memorization by the wall charge accumulated on the dielectric surface

Display by the discharge btw X and Y electrode

1 2 3 4 5 6

1 3

4

5 6

2

05 PDP winter school, J. J. Koz, FTLab


X

Y1

Y2

Y3Y4

Y5

Y6

A1 A2 A3 A4 A5

A1A2A3

A4

A5

Addressing Method


2-2. ADS



1 2 3 4

Y1

Y2

Y3

step

Xn

ADS(Address Display Separation)


Separating the address period and sustain period of each sub-field

SF1 SF2 SF3 SF4 SF5 SF6 SF7 SF8 Orig

inal Im

age

1.....2

480128T64T32T16T8T4T2T1T

1TV field (time)

scan

line

address

sustain

sub-field

8 Subfield in 1 TV-Field (ADS)

Color imaging

Courtesy of SAIT, Dr. S.-H. Son


8 !

- 2

SF1 20=1SF2 21=2SF3 22=4

Ex) 3 -> 8 (23)8 -> 256 (28)


Y1Y1

Y2Y2

Y3Y3

Y4Y4

Y5Y5

Y6Y6

Y7Y7

Y8Y8

11 22 33 44 55 66 77 88

Level 1Level 1

Level 3Level 3

Level 5Level 5

Level 7Level 7LevelLevel SF1SF1 SF2SF2 SF3SF311 onon offoff33 onon onon55 onon77 onon onon

offoffonononon

offoffoffoff

Ex) A 4 ,


Y1Y1

Y2Y2Y3Y3Y4Y4Y5Y5Y6Y6Y7Y7Y8Y8

A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1

X2X2X3X3X4X4X5X5X6X6X7X7

X8X8

Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

22

SF1SF1

XXYY


Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

A6A6

Y1Y1


A1A1A2A2

A3A3A4A4

A5A5 A7A7A8A8

X1X1


X8X8

44

SF2SF2

YY XX


Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

Y1Y1


A1A1A2A2

A3A3A4A4

A5A5A6A6

A7A7A8A8

X1X1


X8X8

A2A2 A4A4 A6A6 A8A8

Y1Y1


A1A1 A3A3 A5A5 A7A7

X1X1


X8X8

88

SF3SF3

YY XX


3. PDP


Power dissipated(Normalized) 100W

UV emission 8W

UV reaching phosphor 4W

Visible emission by phosphor 160 lm (0.8W)

Useful visible light 80 lm (0.4W)

8% (discharge)

50% (geometrical effect)40 lm/watt( 20%)(photoluminescence)50% (geometrical effect)

Global Efficiency 0.8 lm/W (0.4%)

AfterAfter: H.: H.DoyeuxDoyeux(Thomson)(Thomson)

AC-PDP Model Luminous Efficiency


PDP

5 lm/W(800 cd/m2, 250 W)

(1024 X 1024), , image sticking

/ ($ 40/inch), (10),


Pioneer T Waffle


Cell Structure

Deep Cell Pixel Structure (Pioneer)


MgO Layer130m

ElectrodeDielectric

Glass Electrode

Phosphor

100m

70m

Glass

1,080 m

Most popular PDP structure !

AC-PDP Model Fujitsu PDP


???

AC-PDP Model New PDP Cell for 10 lm/W


Breakthrough

Fujitsu

3 El. Surface Discharge Type

ADS Driving

ALiS El. & Driving

Meander Rib

Panasonic

Fence Type El. St.Asymmetry Barrier

RibRamp ResetPlasma AI

T-Shape El.

Waffle type Barrier Rib

CLEAR

Pioneer

KOREA

Cell Structure ?

Driving Method

?

Efficiency

Unique !

Brightness !

Power consumption !


1. PDP is based on the gas discharge plasma characteristics.

2. Both PDP & LCD display are very important and essential for growing engines of Korea.

3. PDP & LCD will have the same or similar picture quality, efficiency in perfomancecharacteristics to each other now .

4. Price will be main key factor for consumers to select PDP or LCD in large sized flat TV over 40.

HistoryWhat is a PDP?Operation & Research issues Plasma GenerationColor imagingBreakthrough

pdp 개론 및 구동원리 - sadkr.tistory.com · kwangwoon univ. electrophysics kwangwoonuniv. /...

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