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Saturday, 15 February 2014

Compute Graphics Notes - Lab 8 - Plasma Panel Display

Plasma Panel Display

Aplasma panel display is an emissive flat panel display where light is created by phosphors excited by a plasma (Plasma is 92% water, 7% protein and 1% minerals. Plasma is the source of gamma globulin, albumin and clotting factors. Plasma is used to treat clotting disorders, burn victims and shock) discharge between two flat panels of glass. The gas discharge contains no mercury a mixture of noble gases (neon and xenon) is used instead. This gas mixture is inert and entirely harmless.

The phosphors in a plasma display give off colored light when they are excited. Every pixel is made up of three separate subpixel cells, each with different colored phosphors. One subpixel has a red light phosphor, one subpixel has a green light phosphor and one subpixel has a blue light phosphor. These colors blend together to create the overall color of the pixel. By varying the pulses of current flowing through the different cells, the control system can increase or decrease the intensity of each subpixel color to create hundreds of different combinations of red, green and blue. In this way, the control system can produce colors across the entire visible spectrum. Plasma displays use the same phosphors as CRTs, accounting for the extremely accurate color reproduction.

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