Types of TVs and what is their difference

Types of modern TVs and their typical classification on certain grounds are quite diverse. So, deciding to buy new TV equipment, many consumers face difficulties in choosing. After all, this is a complex device, which is purchased for a long time, therefore it must have a high degree of reliability. Choosing this type of device, I want to, that even in some years it had an actual set of necessary functions and high technical equipment. To correctly choose the right model with the necessary parameters and optimal functionality, important to understand, what is the difference between the types of TVs.

What are the parameters of TVs

There is no specific generally accepted classification of these devices. Most experts share TVs:

• technologies, with which the image is built on the screen;
• functional features of the device;
• screen resolution capabilities.

TV image creation technologies

This group of TVs is divided into five types:

• CRT;
• projection;
• plasma;
• liquid crystal;
• thin OLED.

Кінескопні телевізори

Although today in stores you can hardly find such devices, but in many homes they still function. CRT technology was widely used in the 90's - 2000's. As the advantages of CRT equipment can be noted:

• budget price (compared to modern devices);
• possibility of repair;
• wide viewing angle;
• natural colors;
• long service life.

Disadvantages of TVs based on cathode ray tubes:

• impossibility of digital broadcasting (many models do not even provide for the installation of a TV set-top box);
• large size and weight;
• image distortion;
• consume more electricity, compared to modern models;
• limited functionality.

The technology of CRT TVs has been studied and developed to the limit.

Проекційні телевізори

They are based on the optical system, which projects a small picture on the main screen (RPTV). There are two types:

• based on cathode ray tubes;
• based on liquid crystals.

The first type of projection TV has three small CRTs (lamps). Everyone has their own color: red, green and blue. Their rays, before projecting the image onto the big screen, pass through a complex system of lenses, prisms, mirrors. This type of TV is very similar to CRT, only has a larger diagonal (to 80 inches), better image quality and lower power consumption.

Flat screen TV, whose work is based on liquid crystals, have either one tricolor matrix, or three (corresponding to the colors of the lamps). These types of TVs weigh much less, have a high resolution, improved picture. During operation, such equipment becomes very hot, therefore, most models have a fan to protect against overheating. More about the device, read the pros and cons of such TVs in the article on projection technology.

Plasma technology (PDP)

These are thin panels with a perfectly flat screen and excellent image quality (bright and juicy colors) significantly different in appearance from previous types. The source of the image is a large number of small pixel cells. There are no problems with focusing in this equipment, TVs have a wide viewing angle without losing quality. But in PDP - TVs on a small diagonal (Less 42 inches) it is quite problematic to use the current Full HD resolution. We are not talking about innovative 4K and 8K. Besides, even the smallest plasma panel consumes more electricity, than the old tube "box". To everything else, the cost of PDP equipment is quite high. And at the moment this technology is not able to compete with relatively inexpensive LED screens. Production often suffers losses, although the image quality of the plasma significantly outperforms the LCD panels in terms of viewing angles, color flow and response matrix. Despite this, plasma technology has stopped evolving by many leading manufacturers.

LCD TVs

This is the most popular group among consumers. The operation of liquid crystal devices is based on the polarization of light flux. The source of the glow is here, unlike plasma TVs - ordinary fluorescent lamps, or, as in the new models, LEDs. They illuminate the white canvas of the reflective screen behind the glass plate. Liquid crystals are applied to it, which under the action of electric current form a picture.

Representatives of this group are characterized by economical energy consumption and low weight, they can be easily mounted on the wall with a bracket. Besides, compared to plasmas, LCD equipment is repairable, this characterizes them as practical devices.

Disadvantages of budget models include delays in dynamic frames and limited viewing angle.

The most popular LCD TVs among consumers are LEDs. LEDs act as illumination of a matrix. At this stage, manufacturers use two types of lighting: Direct і Edge. In the first case, the LEDs are installed on the matrix. This allows you to achieve a low level of black, so you can use Local Dimming technology (local screen dimming) and avoid side highlights. After - others (Edge) light sources are located along the screen (can be located on one side, on two or four - depending on the size of the diagonal). Such models are more energy efficient and more accessible to consumers.

In addition to the above advantages of such TVs, The strengths of LED screens include:

• wide model range and choice of manufacturers;
• any diagonal solutions available today;
• no visible flicker and focusing defects;
• there are no problems with image geometry and sharpness;
• great for broadcasting not only analog channels, but also modern digital television.

OLED - TVs

The basis is a matrix with organic LEDs. The image is displayed on the screen using self-emitting diodes - no backlight required, as in LCD technology - this is the main difference between OLED and LED. Multicolored semiconductor devices act as independent light sources. YOU ARE technology allows you to create the thinnest screens to date (a few millimeters), including curved shape.

Such devices are many times superior to their predecessors. Organic LEDs allow you to get the highest possible level of image brightness, contrast, color. Virtually unlimited viewing angle, which is not inferior to plasma technology. In addition, they are much easier, thinner and more energy efficient than plasma devices. In LCD models, OLED technology wins in the smooth transmission of dynamic scenes, lack of constant illumination.