Difference between LCD and LED

The main difference between the LCD and LED is that display of LED consumes less power and is the best for the picture quality when compared with the LCD  display, This post gives the main key difference between LCD and LED  to a better understanding of this topic.

LCD :
  • LCD stands for liquid crystal display.
  • LCD consumes less power. 
  • LCD can be driven directly from IC chips. Driver circuits are not required.
  • LCD has a moderate brightness level.
  • Comparatively less temperature limit. The temperature range is limited to -20 to 60-degree Celsius.
  • Due to chemical degradation, the lifetime is 50000 hours.
  • The viewing angle for LCD is 100 degree.
  • Operating voltage range is 3 to 20 VDC.
  • LCD is less expensive than LED. If you want to compromise a bit with a quality you can go for an LCD.
LED:
  • LED stands for a light emitting diode.
  • LED consumes more power than LCD.
  • Due to the high power requirement, LED require an external interface circuit when driven from ICs.
  • The brightness level is very good for LEDs.
  • Lifetime is around 100000hours.
  • Commercially available LEDs have an operating temperature range of -40 to 85-degree celsius
  • LED has a wide viewing angle.
  • Operating voltage range 1.5 V to 5 VDC.
  • If you are going to purchase LED, its expensive than LCD but have the quality of picture and better features than LCD.

A key difference between LCD and LED:

Here we will discuss the main difference between LCD and LED, specifically in reference to TVs based on the technology, picture quality, contrast ratio, resolution, viewing angle etc.

  • LCD stands for liquid crystal display while LED stands for the light emitting diode.
  • The cost of the LED is more than LCD.
  • The resolution of LED is much better than that of LCD.
  • The LED is a PN junction diode which emits visible when the forward bias applies across it while in LCD uses liquid filaments which are filled between glass electrodes for the emission of light.
  • The direct current reduces the life span of LCD while in LED has no effect on it.
  • The switching time of the LED is less than LCD.
  • The LCD uses mercury which pollutes the environment whereas the LED does not use mercury.
  • LED is a faster response time compared to LCD.
  • The display area of the LED is less compared to the LCD.
  • The LED comes with a wider viewing angle than the LCD.
  • LED display gives good quality than LCD.
  • LED provides better color accuracy than LCD.
  • The LED consumes more power as compared to the LCD.
  • The LED uses gallium arsenides which when heated emits light whereas LCD uses a liquid crystal which is energized and provides light.
  • LCD is not good to create black area hence not good have contrast as LED while in LED has better contrast and black level as it produces better black areas which give a better quality of the image.
  • The LCD uses cold cathode fluorescent lamp which provides the backlight of the screen whereas the LED uses the P-N junction diodes for the displaying the light.