Despite the external similarity, the different types and models of flat-panel TVs are so seriously different from each other that their optimal choice is a very difficult task. Some are better suited for watching terrestrial television, others as a monumental “monitor” for connecting computers, gaming consoles and media players, while others, in terms of their capabilities, may well give odds to some computers.
You should begin the selection of a flat-panel TV with determining the type of screen that best suits your needs. Today, manufacturers offer two main technologies, each with its own set of advantages and disadvantages.
LCD / LED TVs
This is the most common type of TVs to date, the screen of which is a conventional liquid crystal display (LCD), similar to that used in monitors, laptops, etc. The principle of its work is based on the fact that liquid crystals are used as a kind of “gate”, passing in the right place and at the right time part of the radiation from lamps or backlight LEDs, forming an image of millions of miniature pixel elements. However, even a completely “closed” crystal transmits some part of the world, with which the main problem of LCD panels is connected – their black color is not too deep. Typical for LCD and a small angle – when looking at the screen from the “side seats”, color distortions and loss of contrast are possible, the degree of which depends on the type and quality of the used LCD matrix (TN + film is worse than IPS) and the backlight circuit (CCFL or LED ). Also, LCD panels are characterized by a rather long response time, which results in the appearance of loops and a decrease in the clarity of moving objects in dynamic scenes. Despite these drawbacks, most manufacturers consider “liquid crystals” more promising and consistently working to improve the performance of such screens, successfully fighting the weaknesses of the technology. So, already today, top-end models of LCD-TVs have almost reference image quality, providing a number of undeniable advantages over displays on other technologies.
LED TVs that appeared on the market three years ago, contrary to popular belief, are not a new type of display, but just a kind of LCD technology in which cold cathode fluorescent lamp based backlight (CCFL) lamps have been replaced with LEDs (LED) – light emitting diode). The main advantage of this replacement was an even greater reduction in the thickness of the TV (up to 3 cm or less) and its energy consumption, as well as improved color reproduction and image contrast.
At the level of perception, the AMOLED screen wins the LED only in one, but very important property: it is able to show you the true black color.
Such flat TVs appeared on the market more than 10 years ago, and received the sonorous name “plasma” (PDP – plasma display panel) due to the special design of the screen, consisting of an array of cells, each of which is a miniature camera filled with an inert gas.
When a voltage is applied to such a cell, the gas contained in it passes into the aggregate state of “plasma”, which is accompanied by light emission (the process is similar to that occurring in fluorescent lamps). Passing through the transparent part of the camera, covered with the phosphor of one of the primary colors (RGB – red, green, blue), this light forms the image.
The appearance of televisions based on OLED technology, the public has been waiting for the last five years. In these models, the image is formed by a matrix with organic light-emitting diodes (OLED – organic light emitting diode). These microscopic elements created on the basis of light-emitting organic materials do not require third-party illumination, so you can create displays a few millimeters thick at their base. At the same time, they are distinguished by the highest contrast, absolute black color (in the off state, the LED cell does not emit light at all), excellent viewing angles, improved color reproduction and almost instant response. However, difficulties in manufacturing and some imperfect performance characteristics of OLED for a long time prevented their use in televisions, although they have been successfully using screens on mobile devices for several years.
You can talk for a long time about each of the functions, but I want to give one, as it seems to us, very important advice: when choosing a TV, be sure to trust your feelings! TV is almost impossible to choose on one only characteristics. You should like the picture, the OS should be comfortable, when viewing 3D eyes should not strain. Well, and who will choose the design of your TV better than you?