Post on 17-Jan-2016
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: http://www.howstuffworks.com/tv.htm
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 www.dansdata.com/images/753df/closeup320.jpg
Picture taken from content.answers.com/.../img/CDE/DOTPITCH.GIF
Spectra Taken from a CRT TV
Red CRT Screen
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Red CRT Screen
Blue CRT Screen
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Blue CRT Screen
White CRT Screen
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)White CRT Screen
Green CRT Screen
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Green CRT Screen
This data was taken from a Mitsubishi Diamond Plus 74SB-BK Computer Monitor