Briefing On The Operation Principle Of The Plasma Tv Series Ps And Ph - Prima PS-42D8 B Service Manual

Briefing on the operation principle of the plasma TV series PS and PH

Plasma plane screen technology represents the state-of-the-art and it's also the best choice for
high quality picture and large purely place screen. Plasma display screen PDP is a display unit
employing gas discharge. This screen uses plasma tube as its light emission component. The faceplate
(panel)of PDP consists of many image elements (plasma tubes) for example, the series PS ,PH pdp
now on the market consists of 852*480 image elements. Each image element in turn consists of three
kinds of image sub-elements. Each image element is actually a plasma tube. These tubes are present
respectively in red, green and blue colors, as shown in fig. I. Each small chamber that corresponds to
each plasma tube is filled with neon and xenon gases. After applying high voltage between the plasma
electrodes, the gases in the small chambers of the plasma tubes sealed in the two layers of glass will
produce ultraviolet so as to excite the three basic color (red, green and blue) fluorescent powder to emit
visible light. Each plasma tube acts as an image element. From the composition of these image
elements in different brightness, darkness and colors result the pictures and images of various grays
and colors, which is very similar to the light emission of display tube. Plasma technology is obviously
different form other display methods and is more advanced in structure and formation. Its working
principle is similar to normal daylight lamp. The TV color picture is composed of the light emitted from
various independent fluorescent powder image elements and therefore the picture is fresh and gaily
colored, bright, clean and clear. Furthermore the most outstanding feature of plasma TV is that it can be
made super thin and it's easy to make TV sets of more than 40" with completely plane big screen but in
thickness less than 100 mm (Our Model PS-42D8 is only 79mm thick and it's the thinnest in the market
at present.)
Plasma TV model PS-42D8 B/S and PH-42D8 series of XOCECO is designed and developed by
XOCECO itself. In terms of the main CMOS chip this series of TV set employs PW181 made by
Pixelworks Company.
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