Plasma display.
  Each pixel is a small plasma gas cell (think tiny fluorescent light).

  Pixel cell is a chamber of gas with a chemical coating.
  Electrical charge across cell causes the gas to emit UV-rays that are 
    absorbed by the coating, which releases it as a colored photon (light)
  Different chemicals release different colors.
  Not all chemicals have same lifespan, so certain colors, especially blues
    don't last as long.

  + Economical for large displays > 30" 
    * 2010 Panasonic introduced a 152" model. 14.5 ft.
  + Better black/white contrast than most LCD.
  - Uses as much power as CRTs. Newer models and modes can reduce power by 1/2.
      50" 200-400 Watts
  + Offers larger viewing angle than LCDs.  
  - Early devices had short lifespan, newer devices > 15 Yrs.
  = Device thickness fairly good - 1 - 4" common 
  + Fast refresh rate, low motion blur.
  - Burn in, newer displays slightly shift display over time to avoid.
  - Blocks of certain colors may appear to shimmer.
  - doesn't work well at high altitudes.
  - interferes with AM, ham, and shortwave radio
  - resolution fixed, so non-native images may not scale well.

OLED