Choosing a modern TV, the buyer is faced with many questions, including, and what is the difference between LCD and LED TVs. After all, at first glance, these flat panel panels are no different. And the technology they use is the same - LCD matrix, consisting of two plates. Liquid crystals, located between them, under the action of electric current, like a camera shutter, transmit or obstruct light. Depending on the level of applied voltage, an image is formed on the screen. However, each type of TV has its own characteristics, allowing to determine, which one is better.
Functions of modern TV
Before we move on to consider the advantages and disadvantages of these types of TVs, it is necessary to determine the importance of modern television equipment. The variety of models allows you to meet the different needs of users. Today TVs perform in different qualities.
- Home cinema. LCD and LED are ideal for watching high-definition video and today's popular HD and Full HD formats. Any diagonal solutions, light weight, which allows you to mount the panel on the wall, wide model range, excellent image quality (color rendering, contrast) - all this applies to the considered types of TV.
- Game screen. According to statistics, more 10 million. Russian citizens are fond of computer games, most are active players. To enjoy video games, you need the ability to connect to the widescreen panel of the latest game consoles and consoles (find out, how to connect xbox to tv), support for HD and 3D functions. Matrix response rate, viewing angle and color transfer is also not the last place when choosing a TV for games.
- Design element. The latest achievements and developments will help to complement the chosen interior style or become its highlight. Narrow TV panels, whose width can reach only a few millimeters, stylish curved displays, mirror screens, in which you can easily see your reflection - all this is present in modern TV models.
Before buying a TV is worth it, primarily, to be determined, what needs it must meet. If you look at the price criterion, then LCD models will be slightly cheaper than similar LED TVs. But is it worth saving in this case, and how these TVs are fundamentally different?
Features of LCD TVs
As already mentioned, the basis of the liquid crystal TV is a multilayer structure (glass plates with polarizing filters and a layer of liquid crystals). Light from sources - in this case thin fluorescent lamps with a cold cathode, which are located behind the matrix, passes through the LCD grille. It consists of many cells, each of which, depending on the voltage, transmits different amounts of light (polarization). So, due to the combination of basic colors (green, red and blue) a picture is formed on the screen.
The LCD grille needs backlighting, It is to her that LCD models differ (LCD) and LED.
With the advent of LCD TV on the market, they immediately gained the trust of consumers. Their advantages over previous types of TVs were obvious:
- narrow TV panels which are easy to mount on a wall or a ceiling by means of an arm;
- low energy consumption (specific figures are given in the article on energy consumption of different types of TV);
- no flicker and statistical screen voltage;
- correct image geometry;
- support for Full HD resolution.
Features of LED TVs
Thanks to the good work of marketers, ice technology is positioned as innovative. Although, in fact, it's just a kind of LCD TV, which differs in illumination. More advanced RGB LEDs are used as light sources. To date, LED TVs are the most popular and sought-after models. They use two types of lighting: Direct LED і Edge LED.
In the first case, the LEDs are located directly behind the matrix, like lamps in LCD models. In the second backlight is located at the edges of the screen and is evenly distributed thanks to a special scattering film. Depending on the diagonal, LEDs can be installed on one side, and for two. In models with a large diagonal, the backlight can be installed ??around the perimeter.
Direct LED technology avoids side lights and uses Local Dimming technology. At the same time, Edge LED side type is more energy efficient and allows you to create models less than a centimeter thick.
The main advantages of LED TVs:
- light weight and slim body;
- clear, contrasting picture, with rich color reproduction;
- three-dimensional and realistic image, without distortion;
- premium models use a local screen dimming system (Local Dimming), which greatly improves the picture quality.
LED TV can be considered an advanced type of LCD TV. But in addition to those used in lighting devices, there are other differences.
What is the difference between LCD and LED
- In LED models, due to the lack of lamps, mercury is not used. This makes them environmentally friendly and safe to dispose of.
- LEDs energy efficiency lamps. According to statistics, such light sources save up to 40% electricity, which is used for TV operation.
- LCD TVs are not always inferior to updated models. Example, they win over some budget LED devices. Due to cheaper technology, they have difficulty controlling diodes.
- Possibility of uniform distribution of light-emitting diodes gives only illumination of Direct LED - such models win at usual LCD. Local eclipse, which gives a certain advantage to LED models, with Edge technology is impossible.
- As for video games, then both devices support modern game consoles and consoles.
- In terms of service life, LED also wins in LCD, because fluorescent lamps burn out faster during service. Thanks to RGB LEDs, the accuracy of color reproduction in LEDs lasts much longer.
Which TV is better after all? Certainly, LED models win over LCD. But image quality depends not only on the type of backlight, it should not be the deciding factor. It is important to pay attention to screen resolution and additional technologies, affecting the video signal. Therefore, some models of LCD TVs with CCFL lamps in the presence of a good video processor may well compete with LED TV.