How a Color CRT TV Works Beam of electrons are sent from the cathode/anode setup Directed beam sweeps the screen many times per second The eye sees it.

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Presentation transcript:

How a Color CRT TV Works Beam of electrons are sent from the cathode/anode setup Directed beam sweeps the screen many times per second The eye sees it as continually changing picture Each “dot” on the screen one of three types of phosphor – chemicals that emit red, green, or blue light when hit with an electron These combine to make any possible color Diagrams and legends taken from:

Close Up Pictures of CRT Screen Hexagon Screen Pattern Rectangular Grid Pattern Each of the screens has a repeating pattern of red, green, and blue phosphors that together can make any color. Picture taken from Picture taken from content.answers.com/.../img/CDE/DOTPITCH.GIF

Spectra Taken from a CRT TV This data was taken from a Mitsubishi Diamond Plus 74SB-BK Computer Monitor

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