Difference Between CRT and LCD

The main key difference between CRT and LCD exist in their image forming technique. CRT displays images on the screen by making use of an electron beam while in LCD utilizes liquid crystals for the formation of an image on the screen. Here we will discuss some other important main key difference between CRT and LCD to better understand this topic.


Definition of CRT

CRT stands for a cathode-ray tube. It is a display device used in the television set and computer monitors. It is a one kind of vacuum tube that contains one or more electron guns, electrostatic deflection plates, and a phosphor target which is located at the back of the glass screen.

Definition of LCD

LCD stands for liquid crystal display. It monitors a computer monitor or display that uses LCD technology to show clear images and is found in many laptop computers and flat-panel monitors. This device is available to display arbitrary images or some fixed images with low information content. Which can be displayed or hidden such as preset word, some digits, and seven-segment display and also a digital clock.

The main key difference between CRT and LCD

  • CRT stands for cathode rays tube, while LCD stands for liquid crystal display.
  • A CRT is somewhat large in size and bulky while in LED support flat screen and is light in weight as compared to CRT.
  • CRT and LCD both are display devices. The power consumed by LCD is approximately around the 1/3rd of that of the CRT. CRT consuming high power compared to LCD.
  • A major component of CRT is phosphor screen, electron gun, vacuum glass tube, deflection plate. While in The main component of LCD was an internal light source, glass plate, nematic liquid crystal.
  • CRT is weighted, bulky, and large in size, while in LCD light, compact and thin in size.
  • CRT supports a better viewing angle from all direction as compared to LCD.
  • LCD provides a much good and greater image quality as compared to a CRT screen.
  • The external supply provided to a CRT is usually an analog signal whereas LCD makes use of a digital signal for the same.
  • As the demand for LCD was increased considerably nowadays, this affected the cost of CRT thus made it less expensive as compared to LCD devices. 
  • CRT has a good response compared to LCD.
  • CRT resolution is quiet lower than LCD.
  • One of the excellent properties of LCD over CRT is its an antiglare property. LCD screen more efficiently reduces the glare generated by light as compared to the CRT.
  • CRT is more dominant in flickering as it possesses a low refresh rate that causes a drop in image brightness that is easily recognized by makes eyes. While flickering is not that much higher in LCD due to its high refresh rate.
  • CRT is like black, while in LCD is like white.
  • The electron gun is used to form an image, while in a liquid crystal is used form images in LCD.
  • CRT is used on television and was used in old computer monitor, while LCD is used in a flat-screen.
  • Image retention is never present in CRT. There is image retention in LCD.
  • CRT  can be affected by the external magnetic field, while extreme temperature levels can severely affect the operation of LCD.
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