what is the difference between led lcd plasma displays


Display technology has come a long way since the first CRT monitors and televisions. Nowadays, we have a wide range of options to choose from, including LCD, LED, and plasma displays. But what exactly are the differences between them, and how do you know which one to choose? In this article, we'll take a closer look.

The basics of display technology

Before we dive into the differences between the different types of displays, let's first talk about how they work. All displays use a combination of pixels, which are tiny dots that can change color, and backlighting, which illuminates the pixels. Here's how each technology works:

- LCD (Liquid Crystal Display): An LCD display consists of a layer of liquid crystals that sit between two layers of polarizing material. When an electric current passes through the crystals, they either align or block the polarized light, creating the colors and images you see on the screen.

- LED (Light Emitting Diode): An LED display works similarly to an LCD, but the backlighting is provided by a series of light-emitting diodes. This allows for a more energy-efficient display that can produce deeper blacks and brighter whites.

- Plasma: A plasma display uses small cells filled with a mixture of noble gases and a small amount of mercury. When an electric current is applied, the gas inside the cell becomes ionized and emits ultraviolet light, which then interacts with phosphors on the screen to produce the colors you see.

Now that you have a basic understanding of how each technology works, let's look at the differences.

Brightness and Contrast

One of the most noticeable differences between LCD, LED, and plasma displays is their brightness and contrast. LED displays tend to be the brightest of the three, with the ability to produce deep blacks and bright whites. LCD displays tend to be a little dimmer, and can have issues with contrast ratio, which is the difference between the brightest and darkest parts of an image. Plasma displays, on the other hand, have excellent brightness and contrast, which is one of the reasons they were popular for home theater setups.

Color Reproduction

Another important factor to consider when choosing a display is color reproduction. LED displays tend to have the most accurate color reproduction, with the ability to produce a wide range of colors. LCD displays have come a long way in recent years, but they can still struggle with color accuracy, particularly in blacks and grays. Plasma displays have excellent color reproduction and can produce deep blacks, but can sometimes have issues with color banding.

Energy Efficiency

If you're looking for a display that won't break the bank when it comes to your energy bill, LED displays are the way to go. They are the most energy-efficient of the three, due to their use of light-emitting diodes for backlighting. LCD displays are slightly less efficient, and plasma displays are the least efficient of the three, due to their use of gas discharge to create an image.

Black Levels and Motion

If you're a movie buff, you may be concerned about black levels and motion blur. LED displays tend to have the best black levels, due to their ability to turn off individual pixels completely. LCD displays can sometimes struggle with black levels, particularly in darker scenes, and can have issues with motion blur. Plasma displays, on the other hand, have excellent black levels and can handle motion very well, making them popular for home theater setups.

Size and Price

Finally, when choosing a display, you'll need to consider the size and price. LED displays are available in a wide range of sizes, from small computer monitors to massive 90-inch TVs, and can be relatively affordable. LCD displays are also available in a wide range of sizes, but can be slightly more expensive than LED. Plasma displays, on the other hand, are becoming increasingly rare and are generally only available in larger sizes. They can also be more expensive than LED or LCD displays.


So, what is the difference between LED, LCD, and plasma displays? Ultimately, it comes down to your specific needs and preferences. LED displays are the most energy-efficient and can produce bright, accurate colors, but may struggle with black levels. LCD displays are improving all the time and can be a good mid-range option, but may struggle with contrast and color accuracy. Plasma displays are becoming harder to find, but offer excellent black levels and motion handling, making them a popular choice for home theater setups.


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