(Nikkei BP Group)
(No.1 High-Tech News Site in Japanese)
| Fujitsu Develops Lower-Cost, High Resolution Wall TV Panels
August 28, 1998 (TOKYO) -- Fujitsu Ltd. developed an innovative technology
to produce lower-cost plasma display panels (PDP) with a high resolution,
a company spokesman said.
the new panel driving technology called Alternate Lighting of Surface
(ALiS), the company can produce PDPs for high-definition televisions
(HDTV) with about 1,000 scanning lines using a conventional process
and the same number of driver microchips used to produce the previous
model with about 500 scanning lines.
On the previous panel, in order to prevent malfunctions, the manufacturer
put a space between two scanning electrodes to light and not light alternately.
The ALiS technology limits this mutual interference and makes all the
spaces light. In other words, there are twice as many scanning lines
on the new PDP as the previous model, even though the number of scanning
electrodes is the same on the both models.
In addition, the luminance of the new PDP is 1.5-times higher than that
of the previous model. The entire lighting area on the new model with
scanning electrodes placed uniformly is larger than that on the previous
one, whose lighting area was smaller than the non-lighting area.
Shunsuke Matsuyama, general manager of the firm's PDP division, expects
the new technology to allow lower-cost, high-definition PDPs to be more
widely used at households.
While the darkroom contrast ratio of the prototype is 250:1, lower than
that of the previous model, the company aims to widen the contrast ratio
to 500:1 in preparation for its volume production. It will do so by
Power consumption has remained the same as the previous model at 250W.
In the future, the maker will cut the consumption by improving the efficiency
of light emission.
In April 1999, using ALiS technology, Fujitsu plans to release a 42-in.
PDP model with 1,024 x 1,024 pixels for TVs. It also plans to commercialize
55-in. and 36-in. panels.
The company is also considering adopting the technology as well to produce
a VGA-quality PDPs, in addition to a high-definition television PDP.
More information is available in English at: http://www.fujitsu.co.jp/hypertext/news/1998/Aug/25-2e.html