What is a DISADVANTAGE of LCD displays?

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1

Answer 1

Mechanism of LCD:

The LCD consists of a large number of pixels, or picture elements, consisting of liquid crystal molecules held between two sets of transparent electrodes.
The liquid crystals react in predictable ways when the electrical charge running between those electrodes is changed — meaning they twist and move in ways that let different amounts (and colors) of light through the crystals.
When compared to the other type of flat-panel display (plasma), LCDs tend to be found on the smaller size of the spectrum.

Advantages of LCD	Disadvantages of LCD
Extremely high resolution	In high-temperature environments, there is a loss of contrast
It has no geometric distortion	Limited viewing angle and brightness
It is very compact, thin, and light CRT displays	It requires an additional light source
It does not affect by the magnetic fields	It consumes a lot of electricity which produces a lot of heat
Due to low power consumption, small heated emitted during operation	It has individually liquid crystals which can’t complete all block of the backlight