Answer to Question #88262 in Electric Circuits for Shivam Nishad

Question

State with reasons whether the following statements are True or False.
i) Flat screen displays allowed advent of HDTV

Answer 1

HDTV merely means that the image will be of High Definition, i.e. the image on an HD panel will have more pixels or lines than on some average screen. HDTV technology can be thus either analog (first appeared in 1949) or digital.

Why were old screens so bulky? Because they worked on cathode-ray tubes which received analog signal and turned it into image, and there were screens with a flat-faced cathode-ray tube and their panels were thus flat too. If you design a panel which could show HDTV, and transmit analog signal to this CRT, you'll get HDTV on a CRT. But this is expensive and not effective.

Modern flat panel displays work on digital signals and they are lighter, less dangerous, and more effective.

And since what you see is what the input signal (digital or analog) and the resolution of the screen (or number of lines) allows you to see, historically the flat panel displays did not introduced HDTV.