What is PLasma?

[apollo2011]

OK. That's what I thought.

[apollo2011]

According to HowStuffWorks.com, Plasma is also the light emitting atoms (or ions) in florescent lights.

[VendingMenace]

yeah, the way a plasma TV works is like this...

 

IN the TV there are thousands (million?) of tiny wells. IN these wells are placed a chemical that exists as a liquid (or gas, i forget now). There are three types of wells. WElls that contain chemicals that emit red, green, or blue light. These corespond to red green or blue pixels. Then when the TV needs that area to be, lets say blue, it runs a small current through the blue well. This current ionizes the chemicals and they emit blue light.

 

This is the same way that neon signs work, or flourecent lights. It just it is on a really small scale and the emission is quite sharp (meaning that it emits at roughly one wavelegnth).

[YT2095]

VW`s quite right, it works very much on the same principals at a TV or Monitor screen, the "phosphor" coating on the inside of the display is made up of 3 different chems, each one emits a different color, namely Reg, Green and Blue.

the principal is basicly a modified Cathode Ray tube, with the difference being that is has millions of electron guns (one for each pixel) as opposed to 3 guns and focusing coils and the depth needed to accomplish this.

the Blue (sometimes green) display on your video recorder is an example of of a gas plasma display, although it`s very simple and uses little single color icons (rewind, FF, SP/LP) and 7 segment digital readout.

the tube is heated internaly by an array of mono filements but just under red hot so they last for ages.

the back plate has the cathode emiter array, one per pixel and digitaly multiplexed into a smalled wire bundle, that part goes to the driver chips in your computer.

a mesh positively charges is lain just above these heater wires close to the phoshor display screen, that has the effect of accelerating the electrons from the activated cathode emiter directly past the grid and hits the phosphor, you see a light

 

and that`s about it really

[apollo2011]

Cool *_*