PDP Seminario

8/10/2019 PDP Seminario

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1. Introduction to PDP

PhosphorUV radiation

Visibleemission

Generation

Power supply

P/S

Drivingci

rcuit

TransportationConversion

Concepts of PDP

R G B

R G B

Visible Light

* UV : ultraviolet ()


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Principle of PDP light emission isthe same as fluorescent lamp.

2 pieces of glass plates are placed with a small gap of 0.1mm, which isfilled with discharge gas, and one of the glass plate has a transparent

electrode. When 100 and several ten V of voltage is applied to the

electrodes, discharge starts and generates UV light. This UV light

reaches to the other glass plate on which phosphors (R,G,B) are pasted,

and the phosphors convert UV light to visible light.

< Fluorescent lamp > < PDP >

Fluorescent Lamp and PDP*


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History of PDP

Size : 20 inch

Price : $30~$50/inch

Efficiency : 0.5-1 lm/w

Use : Business

Upgrading Basic

Technique

Size : 20-50 inch


Efficiency : 1-1.2 lm/w

Use : High-Income

bracket

Upgrading MassProduction Technique

Definition : PJTV

FAN Noise : 35-45 db

/ Business Establishing Mass

Production Technique

Size : 30-80 inch

Price : Under $10/inch

Efficiency : 2-5 lm/w

Use : Public

New Production

Technique

Definition : CRT Grade

FAN Noise : No Fan

1st Generation

Preceding

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

2nd Generation

3rd Generation

2006 2007

Size : 30-60 inch


Efficiency : 1-2 lm/w

Definition : CRT Grade

FAN Noise: Under 30db / No Fan

Use : High-Income bracketBusiness


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< Merits >

- Thin Type TV

- Large Scale : 80 possible

- Light Weight (42 Scale)

: PDP 30kg / CRT: over 100kg

: LCD 40 32Kg- Wide Angle-viewing

- High Definition

: cell pitch 0.1mm

- Not-Sensitive to Magnetic Field

- Full-color

- Good Non linearity

: No need for TFT like LCD

< Demerits >

- High Power Consumption

- Low Brightness

- High Cost

- Low Lighting Efficiency

- Image Retention*

- Operation Temperature high

- Acoustic Noise of Driving

Merits & Demerits of PDP

*


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Manufacturing &

Structure of Panel


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2. Manufacturing & Structure of Panel

Cell Structure of Panel

Bus electrode

Dielectric

ITO electrodeMgO layer

Barrier Phosphors

Address

Electrode

Front panel

Back panel


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Cell Structure of Panel


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Electro Arrangement of PDP(SDI Panel - SD)

- A1,A2, , ,:AddressElectrode

- Y1,Y2, , , :Scan&SustainElectrode

- X :Common &SustainElectrode

Y1

Y2

Y480

X

R1 G1 B1 R2 G2 B2 R3

X

R852 G852 B852

Reference

Black Stripe


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Driv ing Circui t

- Discharge Switching

MgO Thin Fi lm

- 2ndElectron Radiation- Forming wall charge

Dielectr ic Layer

- Current Limiting

- Transmitting visible Light- Storing wall charge

Phosph or Layer

- Conversion ofUV Visible Light

Gas- Discharge- UV Generation

Bus Elect rode

- Path of DischargeCurrent

- PreventingVoltage Drop

Transparent Electrod e- Forming Electric Field- Transmitting visible Light

Address Elect rode

- RGB Data Signal Input

Function of each PDP Cell Components


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Process of Panel Manufacturing


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Process of Panel Manufacturing


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X Y

X Y

X

Y

0V

0V

Vex

Vw1

Vw2

X Y

Vex+Vw1 >Vf : Discharge

X Y

Vex-Vw2 < Vf : No discharge

X Y X Y

Vex < Vf : No discharge

Effect of Wall Charge

Different Result with same input pulse Vex according to Wall Charge state


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Reset Address Sustain

Function

Sustain Erase

Wall Charge Set

Issue

Operation marginContrast

Short Time

Function

Select On Cell

Issue

High SpeedLow Voltage

Low Failure

Function

Discharge On Cell

Issue

High EfficiencyLow Voltage

ERC Performance

1 Sub-Field Image Process(ADS Address Data Separate)


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Y rising

Ramp

Y falling

Ramp

Y scan

ulse

Y sustain

ulse

X sustain

ulse

ddress

ulse

A1,2..... Address =Data) Electrode

X Common Sustain Electrode

Y1,2.... Scan Sustain Electrode

Vs 85V Ve 110V

Vset 95V Va 79V

Vscan 85V

Driving Waveform Specification (P3 Alexander)

Reset Address Sustain


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In order to display picture,

select the cells.

Address Operation


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Display cells through strong

Sustain discharge.

Sustain Operation


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RED 4096 Levels

68.7 Billion Colors

1 - Pixel

Level of Luminance

Combination of R,G,B Light

Green 4096 Levels Blue 4096 Levels


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Number

of Pulses

Lights

1 2 4 2048

1 2 4 2048

Luminance Control


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1 Picture Structure by 12 Sub-Field - 1


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1 Picture Structure by 12 Sub-Field -


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PDP S t Bl k Di


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PDP Set Block Diagram

PDP Panel

852 X 480 Pixels

853 X 3 X 480 Cells

Logic B d

Display

Data

Driver

Timing

Scan

Timing

Input

Data

Processor

Clock :

27MHz

Data

Controller

Clock :

60MHz

DRAM

Driver

Timing

Controller

Clock :

20MHz

40MHz

Y Main B d

Row

Driver

Y Pulse

Generator

X Main B d

X Pulse

Generator

Column Driver

Power B d

Power Supply

main Board

LVDS

AC Power

Source

220V

Image

Enhance

r

mage

Scalar

AD

Converterr

TMDS

Receiverr

Video

Decoder

De

interlacer

Micom

Tuner

Audio

Processor

Video

S/W

Comb

Filter

[Whole Block Diagram]


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PDP Dot Module SPEC SDI module

Item

A Zone B Zone Remark

Product Type

42

SD )

Dark

1 6

Bright

0 1

Flickering

0 1

TOTAL

7

42

HD )

Dark 3 8

Bright

0 1

Flickering

1 2

TOTAL

10

50

Dark

3 8

Bright

0 1

Flickering

1 2

TOTAL 10

63

Dark 3 8

Bright

0 1

Flickering

1 2

TOTAL

10

Special Management Items

1) It is Cell-Defect if there are dark, bright,flickering cells over 2 pointswithin

1.5cm in the boundary section.

2) Before vibration/dropping test, it should

be decided whether the module is good/ badness first.

And after vibration/dropping test,

if Cell-Defect happens more than

preceding descriptions on Specification,

it is Cell-Defect module.


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W

H

H/ 4

W /4

Z o n e A

Z o n e B

H/ 4

H/2

W /4 W /2

Figure-5. Measuring Area

A-Zone / BZone Size


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Documents

PDP Seminario