According to statistics, a modern person looks at the screen for more than five hours a day, if only the smartphone screen is taken into account. However, in addition to the phone, eyes strain from a laptop monitor or TV. Since a person spends a significant part of the time looking at various screens, it is important to choose an image display device so that the eyes are comfortable watching what is happening.
Every monitor, TV, and smartphone screen has characteristics that affect color reproduction, picture quality, and smoothness. One of these is the screen refresh rate, which is responsible for the displayed number of frames per second.
Content
- 1 What is screen refresh rate
- 1.1 Technical description of the unwrapping process
- 2 What affects
- 3 How to find out the refresh rate of the screen
- 4 What is the best screen refresh rate for TV and monitor
- 5 When do you need a high refresh rate of the monitor screen?
- 6 How to increase the refresh rate of a monitor or smartphone screen and is it possible
- 7 What other factors affect image quality
- 8 Conclusion
What is screen refresh rate
If you have ever picked up a monitor, then you have probably heard or met the word "hertsovka" in reviews. However, not everyone knows what hertsovka is and what the hertsovka of a monitor affects.
The refresh rate of the screen, or hertz, affects how smoothly the image is displayed. Accordingly, the higher this indicator, the more frames per second will be displayed. For example, the refresh rate of the screen is 50 Hz - what does this mean? This means if hertsovka TV is equal to a frequency of 50 Hz, then it is capable of displaying 50 frames per second.
Technical description of the unwrapping process
Regardless of whether the image is displayed on the screen - dynamic or static - it outputs frames at the same rate and according to the same principle. The display speed is influenced by hertsovka, that is, the number of frames that a monitor, TV or smartphone can display in one second. There are 2 principles by which an image is displayed - progressive and interlaced. The second option is used in budget TVs.
When television developed, the image was transmitted according to the following principle - first, odd lines were transmitted, then even ones. This was formed by the image by means of interlaced scanning. The disadvantage of such image transmission is the appearance of the so-called "comb", when the image flickers, because of which the eyes get tired faster. Videos using this technology for display on modern equipment are converted using deinterlacing, which transmits one frame in its entirety, and not 2 times half the image.
What affects
In the early days of filmmaking, it was believed that it was enough to shoot films at 24 frames per second. So it was possible to save on film and get a fairly smooth image. However, progress does not stand still, so videos with a frame rate of 30 and 60 frames per second began to appear, which increased the smoothness of the image.
To play video at 60 frames per second, you need an appropriate 60Hz monitor. Accordingly, if you want to watch even smoother videos, you need to increase the frame rate when shooting video, and at the same time increase the screen refresh rate. That is, to watch a movie at 120 frames per second, you need a 120 hertz TV.
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How to find out the refresh rate of the screen
The manufacturer in the specifications for the device always indicates the refresh rate of the screen. You can find out hertsovka in several ways:
- go to the manufacturer's official website and find the model of the monitor, TV or smartphone;
- if the smartphone is released earlier than 2020, the manufacturer may not indicate the refresh rate of the screen. In this case, the hertzovka will be equal to 60 Hz;
- If you need to find out the refresh rate of the monitor or laptop screen, you can download an application that will display detailed information about the image output device. For example, Aida 64. Often these applications are already installed along with the graphics card drivers. For Nvidia - Nvidia Control Panel, for AMD - AMD Radeon Software. In the first case, you need to go to the display tab - change the resolution, in the second - display - display characteristics.
What is the best screen refresh rate for TV and monitor
For viewing most of the content both on a TV and on a monitor, 60 Hz is enough. You will not experience discomfort. However, if you want to achieve the smoothest possible frame rate, consider models where the screen refresh rate starts at 120 Hz. Do not consider options where the hertz is 90 Hz, since you will hardly notice the difference between 60 and 90 Hz, but in the second case you will pay more.
When do you need a high refresh rate of the monitor screen?
As mentioned earlier, a high refresh rate allows you to display more frames per second. 60 frames per second is enough for watching videos at the same rate or playing games where there is no dynamics.
In the event that you like games in which frequent frame changes occur, choose monitors with an increased screen refresh rate. So not only will you get more pleasure from the game, but you will also be able to react faster to what is happening. For example, it is better to play shooters on a monitor with a frequency of 144 Hz than on one where the hertz is 60.
How to increase the refresh rate of a monitor or smartphone screen and is it possible
If your monitor supports a higher refresh rate, you can slightly increase it. For example, on Nvidia video cards, you need to go to the display tab - change the resolution. Then click the "Settings" button. In the pop-up window, put a check mark on "Enable modes not supported by the display" and click on the "Create custom resolution" button. Set the native screen resolution and increase the screen refresh rate by 5 Hz. Click on "Test". If passed, you can increase it by another 5 Hz. So until a message pops up that this mode is not supported. As a rule, users manage to increase the frequency to 75 hz.
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What other factors affect image quality
The image quality depends not only on the refresh rate of the screen, but also on the type of matrix, its resolution, brightness, contrast, response time, and color accuracy.
The most common matrixes installed in monitors:
- TN;
- VA;
- IPS.
Smartphones are usually equipped with TN, IPS, OLED and Amoled.
TN matrices are the cheapest from the list. The advantages include the cheapness of the panel and the high response speed. In terms of other indicators, monitors with this type of matrix are inferior to competitors.
VA matrices are more expensive than TN counterparts, but the picture quality is also better. First, the viewing angles are better, that is, when the image is deflected horizontally or vertically, the image does not change color. The color quality is also better - there are 8-bit and 10-bit models. This means that the monitor can display more shades of the same color and improve color accuracy. The disadvantages include a lower response time, but more and more models appear that are not inferior to TN in this parameter.
IPS - the best monitors in all respects. Basically, they are purchased by those who do not spare money on the quality of the picture. There are no competitors to high-quality IPS-models in terms of color rendering.
As for OLED and Amoled matrices that are installed in smartphones, they work on the basis of organic LEDs, which, unlike IPS, can be turned on and off separately. This achieves image contrast and deep blacks, when displayed, the LEDs are off. Amoled is the same OLED, but patented by Samsung.
The iPhone used a variant of IPS - Retina. The peculiarity of this type of display is its high pixel density, due to which the image clarity is increased. OLED matrices are now installed in iPhones.
Conclusion
So what does hertz affect in a monitor? The refresh rate of the screen affects how many frames per second the sensor is capable of displaying and how smooth the image will be. To achieve a smooth image, you need content that is captured at a high frame rate, and you need a matrix that can display the material with the same smoothness. The higher the refresh rate of the screen, the better.
