How do plasma displays work?
top Gas-plasma display panels consist of gas in a plasma state, sandwiched between two plates of glass. Each plate is coated with conductive print; one contains vertical conductive lines and the other, horizontal lines. Together, the two plates form a grid and at the intersection of each line, the gas is stimulated to glow, creating a point of light, or`pixel`.There are over a million such pixels in any screen. Each pixel consists of three small cells of neon or xenon gas packed closely together. Each cell has an ultra-thin electrode on the top and bottom. When a voltage is applied, the electrodes generate an electrical discharge that causes the gases to emit ultra-violet rays. These rays then excite red, green and blue phosphor at the bottom of the cells. As these phosphors return to their natural state, they emit visible light,producing the appropriately coloured pixel on screen. Over 16 million colours can be produced this way, resulting in high-definition image.
Plasma display technology is a new “emmissive” flat panel display technology which gives you the rich, accurate color fidelity of conventional Cathode Ray Tube (CRT) monitors in a large display that is thin enough to hang on the wall. It’s the best way to achieve flat panel displays with excellent image quality and large screen sizes viewable in any environment. This technology known as “plasmavision” is an array of cells, known as pixels, which are composed of 3 sub-pixels, corresponding to the colors red, green and blue. Gas in a plasma state is used to react with phosphors in each sub-pixel to produce colored light (red, green or blue). These phosphors are the same types used in conventional cathode ray tube (CRT) devices such as televisions and standard computer monitors. You get the rich, dynamic colors you expect. Each subpixel is individually controlled by advanced electronics to produce over 16 million different colors. You get perfect images that are easily viewable in a displ
PDPs are fabricated with tiny channels to create columns, which are then coated with phosphors in alternating columns of red, green and blue. A transparent top layer is sealed over these channels, and the space is filled with a mix of inert gases such as neon and xenon. Column electrodes behind the channels and row electrodes are contained in the top layer. Current applied to the top electrodes is triggered by the column electrode to create a plasma discharge from the top layer. This pulse consists of ultraviolet light, and is invisible. The light is directed down into the channel, where it strikes the phosphor layer, which in turn emits visible light.
Plasma TVs employ thousands of sealed, low-pressure glass chambers filled with a mixture of neon and xenon, behind which are colored phosphors (one red, one blue, and one green) for each chamber. When energized, these chambers of “plasma” emit invisible UV light. The UV light strikes the red, green, and blue phosphors on the back glass of the display, which makes them produce visible light.
