Raster Refresh systems:
Electron beam is swept across the screen, one row at time, from top to bottom. Each row is referred to as a scan line. As the electron beam moves across a scan line, the beam intensity turns on and off to create a pattern of illuminated spots.
Vector Refresh Systems:
The system cycles through the set of commands in the display file, drawing each component line in turn. After all line drawing commands have been processed, the system cycles back to the first command in the list.
Plasma Panels:
Constructed by filling the region between two glass panels with a mixture of gases that usually includes neon, a series of vertical conducting ribbons is placed on one gas panel and a set of horizontal conducting ribbons is built into the other glass panel.
LCDs:
Operating by producing a picture by passing polarized light from the surroundings or from an internal light source through a liquid-crystal material that can be aligned to either block or transmit the light.