Modern TV models are very different from those that were just five years ago. This is no longer just a “picture box”, it is a complete system with various functions and capabilities. Technology moves so fast that it’s hard to keep up with it. How to understand all the innovations in the development of TVs, and how to choose the right model. You will learn about all this from this article.
Diagonal size and types of television signals
To begin with, you need to decide on a budget and decide what is preferable for you to a large diagonal or high-tech TV class. If all you need is a large screen size, then go for the models with the lowest specs. If you want your TV to have all the modern features, and the budget is limited, then it makes sense to save on the size of the diagonal.
But you can find a middle ground and buy a TV with a good screen size and, albeit not with the latest developments, but still with modern technologies.
TV signal in your home
Before buying a TV, check the quality of the signal source in your home. Today there are several types of television.
- terrestrial television (SD) usually has a poor signal quality, so if you plan to watch mostly only such television, then you don’t need a big faucet. On the contrary, due to the low quality of the original signal, the large screen can only emphasize all the flaws in the image.
- High definition image (HDTV) is becoming more and more common, more and more satellite and cable channels are broadcasting in a high-definition format of 1920 × 1080 pixels. In this format, a large screen size can only emphasize all the advantages of the image.
- Ultra High Definition Television (UHDTV). The Ultra HD format is the newest and still rare. The picture resolution of 3840 × 2160 pixels allows you to watch TV from a very close distance without loss of quality, since even close you will not see the individual dots that make up the image.
See also a video on how to choose a TV:
TV screen types
Since plasma TVs have been phased out, there are two main types of TVs left: LCD TVs and OLED TVs.
LCD TVs (LED LCD)
Liquid crystals are the most common technology today. TVs with such displays are lightweight and low power consumption. LCD displays are easy to produce, which means they are low cost and have a wide variety of models.
Organic LEDs (OLED)
A relatively new technology that uses organic light emitting diodes in the form of a panel, each LED is an independent light source. That is, there is no need for a backlight unit, as in LCD displays, which makes the picture better, and the cases even thinner. Such screens are very expensive and are represented by a narrow range in our market, at the moment you can only find TVs with a diagonal of 55 inches.
Due to the lack of plasma TVs on the market and the high cost of OLED technology, your choice will most likely fall on LCDs, so we will tell you more about them.
Varieties of matrices and backlights in LCD displays
The matrix and the type of its backlight are the main factors that are responsible for image quality.
To date, such a matrix can only be found in TVs of the lowest class with a screen size of up to 32 inches. The picture is characterized by normal brightness and contrast, but viewing angles are very limited, especially vertically. The advantage of this matrix is its low cost.
It is used both in high-end TVs, and in the middle and lower class. In all respects, it is better than the previous matrix, it has greater brightness, contrast, has wider viewing angles, which are better only with an IPS matrix. The image looks good in a room with dim light.
Of all the types of matrices designed for LCD displays, the IPS matrix has the widest viewing angle. In bright light, the image looks good. In terms of contrast, it is inferior to the VA matrix.
Many modern TVs use the last two matrices, they are very similar in their characteristics and price category.
The following types of backlights are used in LCD screens:
- Side lighting (EDGE LED) occurs quite frequently. Light sources are located only on the sides of the screen, which saves electricity consumption. This type of backlight allows you to make TV cases as thin as possible. The disadvantages include the uneven distribution of light, which can lead to the formation of brighter areas in the image.
- Direct illumination (DIRECT LED) rarely used. This type of backlight eliminates the uneven distribution of brightness, but the TV screen will no longer be as thin as with side lighting.
- Dynamic local illumination is the most efficient type of backlight for LCD displays. The backlight consists of a group of LEDs that can change the degree of illumination, adjusting to the image. This improves the image contrast and the backlight becomes more uniform. There are very few models with local illumination on the market, it can be found only in high-end models at a very high price.
3D format and Smart TV
Three-dimensional imaging technology is found in TVs of different classes, moreover, there is a decrease in demand for this format for home television. Today you can find modern models where this function is already excluded.
Two 3D imaging technologies are used:
- active technology.
The main difference is that glasses for watching TV must have their own power source, batteries or a rechargeable battery. The image is formed at double frequency, the image is displayed for each eye in turn, and the 3D glasses transform the image so that we see it as three-dimensional.
The negative point is that the glasses require recharging or changing batteries, the image flickers slightly, which can tire your eyes when viewed for a long time. The brightness of the picture is reduced, but at the same time, it is distinguished by high definition. This technology is well suited for home viewing in a dark room.
- passive technology.
This technology is also called polarization, because the principles of work are based on this physical phenomenon. Two images are displayed on the screen at the same time, thereby dividing the screen into even and odd sections. Special glasses have a different polarization in each lens, thus a person sees two images at once, which are superimposed and form a three-dimensional picture.
Due to the fact that the picture does not flicker, viewing is not so tiring to the eyes. The brightness is better than with active technology, which allows you to watch movies in bright light. The glasses do not require any power supply. But the image is reduced clarity and detail.
Translated into Russian as «smart TV» — this is a technology for integrating a TV and the Internet, found in most modern models. Connecting to the World Wide Web expands the capabilities of the TV, making it more like a computer. You can use the browser to search for the necessary information, download and use various applications, watch online movies without using a TV signal.
When choosing a Smart TV, we recommend paying attention to the following points: simplicity and ease of control; work speed; what applications are installed; whether there is voice control and a built-in webcam.
Popular TV models
Belongs to the low class, has a low cost on average 160$. 31-inch diagonal, direct backlight type, IPS matrix, supports Full HD, stereo sound. All this allows you to enjoy viewing images in good quality and with excellent sound. This model is well suited for those who believe that 3D and Smart TV are superfluous for a TV and do not want to overpay for it.
A 40-inch LCD display with Full HD support and 20 W stereo sound are just the first pluses of this model. Its main feature is the new Smart TV system, which can be controlled by gestures. The quad-core processor improves performance by boosting speed even when multitasking. And the 3D format will expand your idea of home movie viewing. The average cost is .
Stylish design, 42 inch large screen, Edge LED backlight, VA matrix, let you enjoy a great picture. X-Reality PRO technology allows you to make any image close to Full HD quality. Watch your favorite movie in 3D and use various applications using Smart TV. The cost of this model is considerable, about 370$, but it’s worth it.
Choose the right TV, do not hesitate to ask the consultant about unfamiliar names in the characteristics, progress does not stand still and new features appear every day that can significantly improve and diversify the viewing experience.