With the rapid development of science and technology, smart TV has gradually developed. More and more content can be seen. And at the same time many technologies have emerged to improve the definition of the film. For example, 4K technology. Many buyers hesitate when buying televisions: is it necessary to buy 4K televisions? Let's answer this question.

First of all, we need to know what 4K TV is. 4K TV borrows the concept of projector display resolution. The resolution of mainstream business education projector is 1024 × 768. The resolution of 720P home projector is 1280 × 800, which is called 1.3 K. Full HD 1920 × 1080 is defined as 1.9 K.

Therefore, 4K TV is that the horizontal pixel points of flat panel TV display resolution is 4 times of 1024. That is to say, the resolution of it is 4096 × 2160. Flat panel televisions that reach this resolution are collectively known as 4K televisions.

For the 16: 9 home digital TV, the 4K display standard is 3840 × 2160. Through calculation, it can be concluded that 4K TV has 8 million pixels. In the past, the so-called full HD TV 1920*1080 had only 2 million pixels. The former is four times as much as the latter. Under 4K specifications, the progressive scanning line of the display device can reach 2160, which is often referred to as 2160P.

TV has a resolution of 4K, which is the basis for watching high-definition movies. It enables viewers to have an immersive feeling of the film. However, there are not many high-definition good movie sources that can be watched at present. However, people can feel that 4K technology is making great efforts to develop. Many TV stations have 4K broadcasting capability. In addition, with the increase of resources, more and more people watch 4K movies. Therefore, 4K TV has its place to use. However, as people can see, although the price of 4K TV is lower than when it first appeared, it is more expensive than other types of TV, especially 4K televisions over 60 inches. From the perspective of cost performance, it is necessary for buyers to buy 4K televisions. But it is not recommended to buy large-size 4K televisions.

A 4K TV that is small is not worth buying. If the screen size is less than 36 inches, it is not necessary to buy it. Because in the screen below 36 inches, 4K pixels are placed too densely. It does not improve the image quality.

4K TV deals with the problem of large screen picture particle display over 39 inches. That is, the larger the screen, the higher the K number, and the finer the picture particles. But fine particles need hardware support.

Some people reported that they did not feel the clarity of 4K TV. The reason for the ambiguity is that the source of the film is not 4K. In other words, to buy a 4K TV, you must first have a 4K film source.

What needs more attention is that relevant departments have certain restrictions on high-definition film sources. Moreover, when 4K TV is used to watch TV programs, the picture will be relatively blurred. If you choose to buy a 4K TV, you'd better watch high-definition Blu-ray movies.

The above is all about whether 4K TV is worth buying.