What is the difference between LCD and ice TV: technology, use

One of the most frequently asked questions of buyers who want to purchase a TV is the difference between LCD and LED.

And this makes sense, since at first it seems that they are no different, the products look identical. And when studying technology, it also turns out that it is the same for both options. A two-plate liquid crystal matrix is used, which distributes light depending on the degree of voltage.

However, if we consider a little more in detail the properties of each device, it turns out that there is still a difference. In order to understand the degree of their significance for yourself, you need to decide on the purpose of acquiring a TV.

Use cases

If you want to use a television receiver as a home theaterOf paramount importance to you will be image quality.

Reference. This concept combines the brightness and contrast of colors, picture clarity, support for HD and Full HD formats.

If you buy a TV as a screen for video gameswill be more important for you the ability to connect modern consoles and consoles, as well as the response speed of the matrix.

For many buyers, the combination of a TV with a common interior design is of great importance. In this case, they will pay attention to the diagonal, curvature, specularity or dullness and many other visual parameters.

Having decided on the priorities, you can proceed to the choice. First, consider the features of each species.

LCD TVs

They have a longer service life than their kinescopic predecessors. They do not flicker, so they do not strain the eyes, are endowed with lightness, and the screen is protected from dust sticking.

Design features of such displays are liquid crystals located between two plates under pressure. Under the influence of electric current, they transmit the necessary color through special filters.

But in order for the image on the screen to become visible, you need a backlight. The LCD display is characterized by the use of cold cathode lamps, from which light falls on the entire surface. therefore such TVs cannot completely darken any part of the image and lighten another.

LED TVs

Their design also includes liquid crystals. And in general, the color rendering technology is the same, but the backlighting is completely different.

Reference. LED stands for Light Emitting Diode, that is, a diode emitting light.

Such diodes are located around the entire perimeter of the screen, and each is able to work autonomously from the other. Due to this, certain areas of the screen can be lit more and others less. This "deepens" the picture, visually making it more voluminous. The effect occurs because dark tones without backlighting become much darker, and light tones in contrast appear even brighter.

The difference between LCD TVs and LED devices

The main difference

The only difference between the devices is, as mentioned above, in the used form of backlighting. In all other respects, they are identical, but due to the properties of the backlight, important operational differences can be distinguished.

Due to the ability to local dimming on LED TVs, blacks will be truly black, not dark gray, as in LCDs.

reference. This technology has its drawbacks, for example, the presence of a colored halo in contrasting places.

This happens because the light from the light areas partially falls on the dark. However, it is almost imperceptible to the eye.

Other differences

Cathode lamps of LCD devices operate continuously, while LED diodes consume electricity only in bright areas. Respectively, The second option is more economical in terms of energy consumption.
Customers for whom the design of the TV matters, should pay attention to the fact that the use of LED backlighting technology has allowed to produce much thinner models.
In terms of sustainability, marketers often point out that LED displays do not contain mercury, but gallium and arsenic are present in them, so both options are not completely harmless to the environment.
The main positive difference between LCD devices and LEDs is their lower cost.

Therefore, if the depth of black in the image does not matter to you, you are unlikely to lose anything if you want to save money and purchase a TV with an LCD screen.