DIGITAL TV DEVISION DIGITAL TV DEVISION DAEWOO ELECTRONICS CO., LTDDAEWOO ELECTRONICS CO., LTD
PLASMA DISPLAY PANEL (PDP)
DAEWOOD I G I T A L
2002. 5
1
WHAT IS PLASMA DISPLAY PANEL?
1. PDP refers to plasma display panel. It was named as PDP by the faculty of University of Illinois(UIUC) as they first made it. It was made by combining physical phenomenon called 'plasma' and electric device into a form of panel.Generally speaking, plasma refersto ionized gas. However, it means 'glow discharge' in PDP business.
2. In the past, PDP was monochromatic(orange), nowadays it can generate full color by glowdischarge in the 'excited spaces'.(UV from excited spaces react with fluorescent materialswhich then emit visible rays)
3. PDP let us watch figures or letters through image process and digital&analogue drivingcircuits. In PDP, material science and high technique are combined together.
4. In 1927, a plasma display panel was applied to TV rather than CRT. and its concept was established. In 1964, AC PDP was made by University of Illinois for the first time. In early1970's, George Dick invented 'surface type discharge' which is mainly used
for current AC PDP.From early 1990’ s, many companies have developed the AC PDP that can be selled inconsumer market.
2
< The Principle of PDP>
1. The plasma display panel(PDP) can be thought of as a descendant of the neon lamp.
2. The term plasma refers to a gas that consists of electrons, positively charged particles known as ions, and neutral particles.
3. The PDP has sometimes been referred to as a gas-discharged display because itoperates by passing electricity through neon gas, causing it to become 'charged' temporarily : light is produced when the gas spontaneously discharges.
4. Plasma display panels can also be viewed as a series of fluorescent lamps. The displays operate at high voltages, low currents, and low temperatures, resulting in long operating lifetimes (typical 15000 hours, max 30000 hours).
5.Inside the plasma panel, as series of red, green, and blue cells are grouped in a precise matrix.These cells are activated individually, unlike standard CRTs or LCDs,this means that they emit light individually creating a precise pixel on the viewing area.
3
Plasma
UVPhosphor(R,G,B)
Front Glass Substrate[*]
Visible LightAddress Electrode
Back Glass Substrate
Sustain Electrode
Dielectric Layer
Protection Layer(MgO)
Dielectric Layer
Visible Light
Bus Electrode
Under Layer
Barrier rib
Barrier Rib
(Front Glass Substrate)
Sustain Electrode
Dielectric LayerProtection Layer(MgO)
Dielectric Layer
Bus Electrode
Under Layer
Phosphor(R,G,B) Address Electrode
(Back Glass Substrate)
< The Structure and Principle of AC-PDP >
4
< The Driving Method of AC-PDP >
1. As of early 1990, PDP was used as monochromatic monitors with simple X-Y matrix driving system and 'Refresh'method.
2. Nowadays, PDP can display natural colors through sub-field driving method.That is called “ ADS (Address Display Seperated) Method” .
3. 1 TV field consists of 8 sub-fields (SF1-SF8).And each sub-field has different ratio of brightness( 1, 2 , 22 23, 24, 25, 26, 27 ).
4. While the brightness of CRT is determined by the intensity of electron beams,the brightness of PDP is determined by controlling the frequency of glow dischargeduring the time interval called "1 TV frame".
[ Brightness display types of PDP and CRT ]
[ Driving of sub-field ]
Display Device Mechnism of brightness(gradation) display
1 TV Frame
1 SF 2 SF 3 SF 4 SF 5 SF 6 SF 7 SF 8 SF
1 TV Frame
AddressDuration
1 2 4 8 16 32 64 128
Brightness
PDP
CRT
Brightness
Time 1/60 sec
Time 1/60 sec
Simulation Movie
5
6
Why Digital?
• High Quality Video and Audio • Interactive Services
AnalogAnalog
Normal Quality Video
Unilateral InformationPassive Info Service
1 program per channel Multiple programs per channelDatacasting
Interactive Info ServiceT-CommerceInternet
DigitalDigital
Better PtictureBetter SoundWide Screen (16:9)
8
Comparison Chart
CRT Monitor
LCD Monitor ViewingAngle
MagneticInterference
PowerConsumption
Brightness
Contrast
Gray scale
Color reproducibility
ColorTemperaturePoint
DefectImageSticking
Uniformity
Resolution
Depth
Weight
LargeScreen
SmallScreen
Good Bad
5 4 3 2 1
PDP Monitor
Rear Projection
Projector
10
Type LCD CRT PDP Projection Projector
Size 2" ~ 21" 14"~38" 42"~65" 45"~65" 100"~300"
Purpose PersonalPurpose
PublicPurpose
Small &Medium size All
Medium &Large size
Size
Remark Good forSmall Screen PDP will dominate
Good forPublic
Purpose
Home & Semi Public Purpose
Trend
Overview of Display Device
11
The Outlook
5 15 25 35 45 55 65 Over 100
CRT Direct-ViewCRT DirectCRT Direct--ViewView
LCDLCD PDPPDP
Rear ProjectionRear ProjectionRear Projection
ProjectorProjector
LCDLCDLCD
CRT DirectCRT Direct--ViewView
PDPPDPPDP
Rear ProjectionRear Projection
(Screen Size)
ProjectorProjector
5 15 25 35 45 55 65 Over 100
12
Display Market Forecast
Display Market(K units)
18,480
198,900
200LCD
CRT
PDP
'99 01 03
31,400
225,730
700 49,000
244,000
2,600
217,580
257,830
295,600
Source : IDC, EIAJ
13
Plasma Panel Driver ModuleA/V+Power Module
Plasma Display Module
DisplayDevice
DispayDriver
OperatingParts
PDP Type PlasmaPanel
DreiverModule
A/V + PowerModule
CRT Type CPT DYElec./Gun Main PCB
PLASMA DISPLAY PANEL
14
Panel Makers
FHP
Panasonic
Pioneer
NEC
DAEWOODAEWOO
LG
Samsung
Established Japanese Manufacturers
The only “proven” Korean manufacturer
Extensive Pre-Marketing; butProducts yet to be proven.
There are numerous set makers,but only a handful of Panel + Driver Module Manufacturers.
15
Competitive Priority
1. Ultra-Slim & Light Design- Excellent heat transfer by self air circulation flow- High efficiency power supply module- No fan- Attachable speaker system
2. Outstanding Picture Quality- Adaptive sustain control for optimized picture contrast- image processing for better grayscale expression- Optimum weight pattern for False contour correction- 3D comb filter ( NTSC )- PLE ( Peak Luminance Enhancement )
16
3. High Quality Sound- 8W+8W Hi-Fi Stereo Speaker Output
4. Various Picture Control- Available for very kinds of inputs(Video, PC, DTV/DVD)- OSD : 9 Language- Zoom up- Freeze Picture- Scaling (DVD, Video): Normal, Wide, Panorama, Letter Box
5. Program Upgrade Available
6. Reliability- Safety Standards: UL, CSA, CE, CCIB, etc- High temperature & Humidity test- Test for each development step- Power ON/OFF Test: Over 100 thousand times- Mechanical Test: Drop, Vibration, etc
17
Daewoo PDP Business History
• 1994 Start PDP Business
• 1996 Developed Prototype PDP Module with OEC(Orion Electronics)
• 1997 Start Product Development (42 inch, More than 500 Patents)
• 1998 Launched 1st Model (DSP-4260W, PDP-TV)
• 1999 Mass Production for KOREA (DSP-4260W, PDP-TV)
• 2000 Developed 2nd Model (DSP-4210GM, PDP-Monitor)
• 2001 Mass Production (DSP-4210GM, PDP-Monitor)
• 2001 Developing 3rd Model (MP Start 1Q 2002)