Difference between plasma and LED.

Plasma panels, according to marketers, are the ultimate dreams of any modern person. More recently, liquid crystals were such a limit, and the abbreviations LED and LCD have firmly entered our life. Along with them came the confusion, which worsened with the appearance and spread of plasma. In our understanding, LED TVs, for example, have LCD screens that hide LED backlighting. This terminology is a feature of the Russian market, which freely replaces concepts and creates new ones. It is not worth looking for differences between the technology of plasma screens and the features of the backlight, and the LCD screen and the plasma panel placed side by side for comparison will not cause interest: the devices are obviously different in class and characteristics. But LED screens and plasma are quite comparable technologies, and the differences between them can help in choosing or finally avoid constant confusion of concepts.

Definition

Plasma screens, or panels - screens for displaying information based on the properties of the ionized gas.

LED-screens - screens for displaying information, which are based on LED matrices.

Comparison

As can be seen from the definitions, the difference between LED-screens and plasma panels consists in the use of completely different technologies. The basis of a plasma screen is a matrix filled with gas, most often xenon or neon. The electrodes are energized by ionizing the gas and resulting in a plasma, in which a high-frequency discharge causes ultraviolet radiation, which causes the luminescent substance to glow. This glow in three primary colors passes through the surface of the screen and becomes visible to the eye. LED-matrices are built on the basis of LEDs: a group of them forms a separate pixel. Unlike LCD screens, neither plasma nor LEDs require additional backlighting.

The structure of the plasma screen

LED-screens are often used for outdoor displays and billboards. They are reliable and durable, and have a remarkable advantage: in case of damage, parts of the screen do not fail, continuing to display the picture. Plasma, by the standards of modern electronics, serves indecently little: it is believed that it is about nine years, if technologically not provided with prolonged operating time. Plasma panels burn out quickly when exposed to high temperatures. True, the durability of screens can be considered a marketing characteristic, because, for example, most people prefer to change their home TV more often than once a decade.

With regard to image quality, the subjective advantage remains with the LED. Contrast, brightness and naturalness of color reproduction of both technologies are approximately at the same level, however, the pixelation of plasma is much higher than that of LEDs, viewing angles are smaller, and LEDs have the ability to create huge screens (really huge, on a scale, for example, in squares and stadiums). The resolution of LED matrices is often low, and this affects the picture in a negative way.

The structure of the LED-screen

On the other hand, LED-screens are an expensive pleasure, and as a home solution they are not sold en masse. Plasma panels are already well domesticated, and even the cost, in comparison with LCD monitors and TVs, no longer ruins budgets. But the plasma is very energy-intensive, and besides, the heat release rates for such devices go off scale beyond any boundaries. The undoubted advantage of plasma is its compactness. LEDs still have a physical minimum size, because the matrix of screens based on them is quite large. However, this problem was solved with the help of OLED - screens on organic light-emitting diodes, only for use as a home TV OLED still offers too small diagonals. Thus, LED screens are used primarily as a means of public broadcasting of images, for example, in advertising, and plasma panels are quite successfully beginning to crowd out conventional LCDs.

Conclusions TheDifference.ru

  1. The operation of plasma panels is based on the properties of ionized gas, while LED is a light-emitting diode matrix.
  2. LEDs are stronger and theoretically last longer, plasma life is limited.
  3. Brightness, contrast, natural color reproduction and wide viewing angles are the advantages of LED, high resolution is the advantage of plasma.
  4. LED is objectively more expensive, plasma is readily available today.
  5. LED-screens can reach enormous sizes, the creation of plasma panels of multi-meter diagonals is extremely difficult.
  6. Plasma panels are energy intensive, LEDs are much more economical.
  7. LED is more often used for public display screens, plasma is used for household screens.
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