Difference Between LCD and LED TVs


Main Difference

The main difference between LCD and LED TV is regarding the back lighting. LED TV is not lit using fluorescent tubes, but rather a series of light emitting diodes (LEDs). LED TV’s use an array of tiny and efficient LED (light emitting diode) to get the screen illuminated whereas the ordinary LCD TVs make use of the cold cathode fluorescent lamps for back lighting. Back-lighting technology LED TV’s have an edge over the simple LCD television.

What is LCD TV?

LCD stands for Liquid Crystal Display. These televisions are the offer like the slim design and a flat viewing surface. It consists of two polarizing transparent panels with a liquid crystal solution between them. Liquid crystals are basically rod-shaped molecules and possess the ability to bend light when an electric current is passed through them. A backlight is required to light up the screen, and then only one can see the image. In the case of LCD TV’s, this backlight is a cold cathode fluorescent lamp (CCFL). These lamps spread a white light across the back portion of the LCD. This portion is then colored to form the images. One of the major limitations of this technology is that fluorescent tube lights the full screen evenly. Thus, one cannot play much with the backlighting intensities for different parts or portions of the screen.


What is LED TV?

LED stands for Light Emitting Diode. It can also refer as LCD televisions with LED technology. The technique of image formation remains the same in both the cases. However, instead of using the technology of CCFL, it uses the LED technology for backlighting. In this case, light emitting diodes are used. LED technology consumes less energy and space than conventional bulbs. LED TVs are of two types- Edge-lit LED TVs and back-lit LED TVs.

Key Differences

  1. LED smart TV prices are higher than the LCD
  2. LCD brightness is not uniform across the screen. Less contrast than LED smart TV
  3. LCD consumed low energy as compared to LED smart TV
  4. LED picture quality is better than LCD
  5. LED choice in the size is limited as compared to LED
  6. Picture resolution is better in LED
  7. More Slim structure in LED
Harlon Moss

Harlon currently works as a quality moderator and content writer for Difference Wiki. He graduated from the University of California in 2010 with a degree in Computer Science. Follow him on Twitter @HarlonMoss