Which Display Will Win? Bruce Berkhoff (LPL) …We will swamp the PDPs …. ….. 30-40 TFTs will displace plasmas … …. (plasmas) dont have the brightness, they have burn in problems …… Kazuya Yamamoto, an analyst with UFJ Tsubasa Securities Co: ….In the U.S. demand for plasma displays televisions is exceeding liquid crystal displays …. ….Fujitsu Hitachi had no choice but to build a new PDP plant, with rival companies accelerating production Source: Drawing by Bonnie from The Clock
PROJECTION – THE NEW WAVE ? Rear projection becomes new TV battleground, according to iSuppli…… Major Taiwan Flat Panel Manufacturers focusing on LCOS TV Technology……. Lower-Priced Projection TV Outshines Plasma Hype… Thomson RCA/InFocus - 61-inch RPTV that is only 6.85 inches deep TV makers such as Philips Electronics and Sony Corp. (SNE) have dabbled in LCoS chips for their own TVs…… Intel - Unveiled its LCOS technology for RPTVs….and left….
Samsung developed high-definition PDP televisions of 80-inch and 102-inch diagonal size Resolution of 1,920×1,080 pixels, a brightness of 1,000-candela-per-square-meter and a contrast ratio of > 2,000:1
Luminance lifetime of PDP 60,000 hours in video mode Guaranteed by 3 companies
Luminance maintenance of 50-inch PDP (Pioneer, SID04),compared with a 37-inch LCD (Sharp)
0H2000H5000H displaying image Much darker areas near four corners seven dark lines(14-15 CCFL lamps) 7000H (Mura) Conditions: peak luminance 400 cd/m2, 140 W, 23C no power saving, 24 hours, 7 days per week switched 168 times every week Full white Darker screen Dark gray Burn-in images on a 37-LCD-TV
LCD makers compare LCD and PDP by the value of maximum power consumption. Maximum power consumption is a measure for power-line safety (line capability /safety breaker), but it is not a measure of actual (effective) power consumption. The actual power consumption however is determined by the annual power consumption,as defined in Japan. This measure should be applied to compare the power consumption of displays. Annual power consumption = ((Operating power) - (Save power by power saving mode) x 1/4) x 1642.5 + (Stand-by power) x 7117.5 The average power consumption for TV use is calculated as follows; Operating power = (White display power + Black display power) x 1/2 Stand-by power = (Power at main switch off + Power at remote switch off) x 1/2 Save power by power saving mode = Operating power - Power at saving mode) Power Consumption
0152230344350(diagonal 2 ) Screen Area 600 550 500 450 400 350 300 250 200 150 100 50 0 Annual power consumption (k hour/year ) Lower than LCD-TV Same screen size Relation between screen area and power consumption 3 Gen Pioneer 4 Gen Pioneer LCD
LCD-TV Improvement of Image Defects requires higher power consumption and higher cost Large Screen : Same size LCD-TV will not be lower power consumption than PDP TV. High Image Quality Improvement of Image retention requires: Black screen insert = Decrease of luminance Increase of back light number Increase of power consumption Increase of lamp luminance Shorter lamp lifetime Back light blinking = Decrease of luminance Increase of lamp luminance Shorter lamp lifetime or higher cost (LED) Increase of peak luminance: (Peak luminance of TV picture does not reach the value of catalogue spec.) Increase of lamp luminance Increase of power consumption Shorter lamp lifetime Improve luminance uniformity: (low luminance on outer screen area) Increase of back light number Increase of power consumption & Cost up Improvement by optical diffuser Cost up
Technology Surface discharge Two-electrode type Front phosphor layer He-Xe Three-electrode type Reflective phosphor layer Ne-Xe Xe (5 ) Low Xe content (1 )High Xe (>10 ) L (experiment) L (product) η(experiment) η(product) This figure shows that luminous efficacy will increase continuously in the near future. 19851980198519901995200020052010 10 5 2 1 0.5 0.2 0.1 Panel luminous efficacy (lm/W) 1000 500 200 100 50 20 Panel peak luminance (cd/m 2 ) Improvement of luminous efficacy of PDP (panel power reduction)
When does LCD seem to be beautiful? In brightly illuminated show rooms A bright environment hides the gradation in a dark picture. Appealing thanks to low ambient light reflectivity. H ome use: A picture with perfect black is important for watching movies Customers in Japan are not satisfied when they purchase an LCD-TV and watch movies at home. The LCD black surface seems bluish and a human face seems pale-white PDP has perfect black at home LCD is Not a high quality display for movies at home !
Contrast of an LCD-TV The quality of the image of PDPs does not change with viewing angle. The quality of an LCD changes with viewing angle. Such a display is not good for large area TV in a living-room ! For LCD, in dark environment black image seems whitish and from oblique direction the effect becomes large. For LCD, in bright environment black image seems whitish from oblique direction.
Response time of LCD versus PDP PDPLCD Company P (43-in) Company A 30-in.) 8ms (scene independent) 40 50ms Small change of luminance High change of luminance 5 16ms (but 40ms including after response
COM (Chip On Metal) 2nd generation TCP (Tape Carrier Package) 4th generation New driver ICs for PDP with 192 outputs: $2 per IC. The total cost of data driver ICs for a High Definition PDP is now only $ 60 New generation PDP address driver modules (address power reduction)
Gen 7 Magic ? So what magic will result from even larger substrates in Gen 7 ???? New PDP factories already uses that substrate size (180 x 230 cm)! Two years ahead of LCD! LCD Materials cost is dominant and this will not be reduced by Gen 7 lines !
COST 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1.8 1.6 0203 04 05 06 07 08 09 10 Year PDP TV LCD-TV Source: JEITA Cost Roadmap 42-inch HDTV PDP-TV and LCD-TV (relative values) Result: 8 million PDP panels in 2007 (LCD curve adapted to include the effect of 7G-LCD lines)
PDP will be the Winner of the 42-inch Battle Between PDP and LCD Luminance life Power consumption Image quality Production cost Summary,from any point of view:
Acknowledgement & Disclaimer Many people have contributed to this comparison of PDP with LCD I thank especially Dr Uchidoi of Pioneer for providing data from Pioneer and Larry Weber for providing a critical analysis of PDP versus LCD Adaptation of the original material has been done by Harm Tolner and the compilation presented here is the copyright of Harm Tolner, and can only be further used by referring to this publication. Any conclusions from the data in this report is at the sole responsibility of the reader. Harm Tolner, nor any one else mentioned in this report, can be held liable for the correctness or completeness of the information given in this report. Harm Tolner invites readers to send additional data for further comparison of PDP and LCD Eindhoven, 3 February 2005