Question

There is no picture tube in LED TV then how do we see the visuals?

Answer 1

in picture tube  ,where the image is made, is coated with phosphor. when the phosphor is struck by an electron beam, it glows as in the  light LED tvs utilize light-emitting diodes set behind the television screen, allowing for regional dimming while delivering more vibrant color. 



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Answer 2

the latest tv with well developed facilities are led which came up from lcd. An led  tv works with it's lcd panel with leds. We knew that led are made up of semi conductors which glow in even small amount of current.