PLASMA DISPLAY PANEL (PDP) DAEWOO D I G I T A L 2002. 5 DAEWOO ELECTRONICS CO., LTD DIGITAL TV DEVISION
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 refers to 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 glow discharge in the 'excited spaces'.(uv from excited spaces react with fluorescent materials which then emit visible rays) 3. PDP let us watch figures or letters through image process and digital&analogue driving circuits. 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 in consumer market. 1
< 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 it operates 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. 2
< The Structure and Principle of AC-PDP > Bus Electrode (Front Glass Substrate) Protection Layer(MgO) Sustain Electrode Dielectric Layer (Back Glass Substrate) Barrier Rib Visible Light Dielectric Layer Phosphor(R,G,B) Under Layer Address Electrode Protection Layer(MgO) Barrier rib Phosphor (R,G,B) Front Glass Substrate[*] Plasma UV Visible Light Dielectric Layer Bus Electrode Sustain Electrode Address Electrode Dielectric Layer Back Glass Substrate Under Layer 3
< 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, 2 2 2 3, 2 4, 2 5, 2 6, 2 7 ). 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 discharge during the time interval called "1 TV frame". 4
[ Brightness display types of PDP and CRT ] Simulation Movie Display Device Mechnism of brightness(gradation) display Brightness PDP Time 1/60 sec CRT Brightness Time 1/60 sec [ Driving of sub-field ] 1 TV Frame Address 1 SF 2 SF 3 SF 4 SF 5 SF 6 SF 7 SF 8 SF Duration 1 2 4 8 16 32 64 128 1 TV Frame 5
Why Digital? High Quality Video and Audio Interactive Services Analog Digital Normal Quality Video Better Pticture Better Sound Wide Screen (16:9) Unilateral Information Passive Info Service Interactive Info Service T-Commerce Internet 1 program per channel Multiple programs per channel Datacasting 6
Display Types Orga -nic EL 7
Comparison Chart LCD Monitor CRT Monitor Small Screen Viewing Angle Magnetic Interference PDP Monitor Rear Projection Large Screen Power Consumption Projector Weight Brightness Depth 5 4 3 2 1 Good Bad Contrast Resolution Gray scale Uniformity Color reproducibility Image Sticking Point Defect Color Temperature 8
Advantages of Plasma Display 9
Overview of Display Device Type LCD CRT PDP Projection Projector Size 2" ~ 21" 14"~38" 42"~65" 45"~65" 100"~300" Purpose Personal Purpose Home & Semi Public Purpose Public Purpose Trend Small & Medium size Medium & Large size All Size Remark Good for Small Screen PDP will dominate Good for Public Purpose 10
The Outlook CRT Direct-View Rear Projection LCD PDP Projector 5 15 25 35 45 55 65 Over 100 (Screen Size) 5 15 25 35 45 55 65 Over 100 CRT Direct-View Rear Projection Projector LCD PDP 11
Display Market Forecast Display Market (K units) 295,600 PDP LCD 217,580 200 18,480 2,600 257,830 700 49,000 31,400 CRT 198,900 225,730 244,000 '99 01 03 Source : IDC, EIAJ 12
PLASMA DISPLAY PANEL Plasma Display Module Plasma Panel Driver Module A/V+Power Module PDP Type CRT Type Display Device Plasma Panel CPT Dispay Driver Dreiver Module DY Elec./Gun Operating Parts A/V + Power Module Main PCB 13
Panel Makers There are numerous set makers, but only a handful of Panel + Driver Module Manufacturers. FHP Panasonic Pioneer Established Japanese Manufacturers NEC DAEWOO The only proven Korean manufacturer LG Samsung Extensive Pre-Marketing; but Products yet to be proven. 14
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 ) 15
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 16
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) 17