Display refresh rate, what does screen refresh rate mean

60Hz is enough, 75Hz you can't see the actual change, but it will increase the burden of the LCD when working, which has an impact on the life of the LCD.

Because liquid crystal is different from CRT, liquid crystal is not formed by the electron beam scanning gate when working, so there is no problem of refresh rate, and CRT is different, the electron beam of the picture tube scans the gate at high speed to form an image, the higher the refresh rate, the more stable the image of CRT, so generally speaking, CRT is recommended to refresh above 85, liquid crystal because of different imaging principles, so even if you adjust the refresh rate to 40, there is no difference with 60, On the contrary, too high a refresh rate will also cause water ripples and text ghosting on the screen, so the general standard value is to refresh 60Hz.

Theoretically speaking, as long as the refresh rate reaches 85hz, that is, 85 refreshes per second, the human eye will not feel the flicker of the screen, but in actual use, some people can often see the difference between the 85hz refresh rate and the 100hz refresh rate, so from the perspective of eye protection, the higher the refresh rate, the better.

Generally, it's okay to set it to 85hz, it's useless to think it's too high, and if it's set low, your eyes will feel tired and the screen will flash badly.

In general, the higher the better, because the refresh rate of the display determines the quality of the image.

75Hz but the LCD monitor can be set or not.

Generally, 60 is enough, if it is too high, there will be problems, of course, the higher the high-end liquid display, the better. Now the liquid display is automatically adjusted to the optimum, so don't worry about it.

The screen refresh rate refers to the number of times a display updates an image per second, usually expressed in hertz (Hz). The higher the rate of brush susceptibility, the faster the image will be updated, and generally provide a smoother visual experience. In the field of TVs and monitors, the common refresh rates are as follows:

1.60Hz: This is the most common refresh rate, and the display updates the image 60 times per second.

It's enough to provide good visuals in most scenes. 2. 75hz：

Some monitors support higher refresh rates, such as 75Hz. This can provide a slightly smoother image than 60Hz, making it suitable for general office and entertainment use. 3.

120Hz, 144Hz, 240Hz: These high refresh rates are suitable for professional gaming or applications that require higher responsiveness. They can provide a smoother display in moving images, reducing image ghosting and blurring.

It is important to note that to enjoy the benefits of a high refresh rate, the monitor itself must support the corresponding refresh rate and be connected to the output device (such as a computer or game console) via an appropriate interface (such as HDMI or DisplayPort). At the same time, the output device and content also need to support the corresponding high refresh rate. The refresh rate is a factor to consider when choosing a monitor, and depending on your needs and budget, choosing the right refresh rate can provide a better visual experience.

The screen refresh rate is how many times a computer screen is redrawn in a second.

The electron gun starts from the first line in the upper left corner of the screen (the number of lines is determined by the resolution of the spine seepage at that time, for example, at 800x600 resolution, the electron gun will scan 600 lines), scan from left to right, and then start from the leftmost end of the second line to the rightmost end of the second line after the first line is scanned, and then start from the upper left corner of the screen after scanning the entire screen.

At this time, shouting and rolling completes a refresh of the screen, and the cycle repeats. This allows us to understand why the higher the resolution of the display, the lower the maximum refresh rate it can achieve.

Generally speaking,The refresh rate of the screen should reach more than 75Hz,The human eye is not easy to feel the flicker of the screen,The refresh rate of the CRT display is determined by the line frequency of Sakura and the resolution at that time,The higher the line frequency,The higher the refresh rate at the same resolution; In the case of a certain line frequency, the higher the resolution, the lower the refresh rate it can achieve.

Hello dear, the screen refresh rate is the number of times the screen is refreshed per second, when we watch a movie, the liquid we see is really a static picture, just like a slideshow, why do we feel that the picture is moving, it is because the human eye has a visual stay effect, the impression of the previous picture in the brain has not disappeared, and then the next picture will follow, and the difference between the two pictures is very small, an action has to be displayed with many pictures, so that we feel that the picture is moving, Suppose an action is completed by 20 screens, we look a bit like a cartoon, and if this action is increased to 30 pictures, it will look much more natural, this is the refresh rate. The refresh rate refers to the number of times an electronic alarm or beam is repeatedly scanned on an image on the screen. The higher the refresh rate, the more stable the displayed image (picture) will be.

The refresh rate will directly determine it**, but because the refresh rate and resolution are mutually restricted, only a display that achieves a high refresh rate at a high-resolution masking rate can be called excellent. Note that while the unit of calculation and the vertical scan frequency are both Hz, these are two very different concepts. A 75Hz refresh rate is the most basic standard for VESA to set flicker-free, and 75Hz here should be the standard that can be achieved in all display modes.

Screen refresh rate: For CRT displays, the graphic image on the screen is composed of fluorescent dots that emit light due to the impact of the electron beam, because the phosphor in the picture tube is hit by the electron beam for a short time to emit light, so the electron beam must continue to hit the phosphor to make it continue to emit light.

Generally speaking, the refresh rate of the screen should reach more than 75Hz, so that the human eye is not easy to feel the flicker of the screen, the refresh rate of the CRT display is determined by its line frequency and the resolution at that time, the higher the line frequency, the higher the refresh rate at the same resolution; In the case of a certain line frequency, the higher the resolution, the lower the refresh rate it can achieve.

In the case of LCD, there is no problem with the refresh rate, it does not need to be refreshed at all. Because each pixel in the LCD continues to emit light until the non-emitting voltage changes and is sent to the controller, there is no flicker caused by "continuous charging and discharging" of the LCD.

For traditional CRT monitors, that is, flat displays, the lower the refresh rate, the more flickering and jittering the image will be, and the faster the eyes will be fatigued. Sometimes it causes symptoms such as sore eyes, lightheadedness, etc.

Because 60Hz is exactly the same as the refresh rate of a fluorescent lamp, it can create an unpleasant strobe effect when the display is at a 60Hz refresh rate. When the refresh rate above 70Hz is used, flicker can be basically eliminated. Therefore, a refresh rate of 70Hz is the minimum required for the monitor to work stably.

The screen refresh rate is measured in hertz and is indicated by a number in front of it, such as 60Hz. 60 in rubber socks here means that the panel is capable of displaying a new image 60 times in a second, and so on. As this number increases, so does the number of images displayed per second, resulting in a smoother image.

Every pixel of the screen needs to be updated when it displays new content. Therefore, every time the screen updates all pixels from top to bottom, it is called a "refresh", and the refresh rate refers to the frequency of screen updates or refreshes.

For on-screen displays, the lower the refresh rate, the more flickering and shaky the image will be, and the faster the eyes will be strained. Sometimes it causes symptoms such as sore eyes, lightheadedness, etc.

Modern smartphones have adopted higher refresh rates, such as 90Hz and 120Hz, for a better experience. It's smoother when scrolling and swiping through the web.

Operating environment

Make model: iphone12

System Version: