What is the computer screen refresh rate set how much the screen refresh rate fit

What is the screen refresh rate of the computer screen refresh rate set how much appropriate? For screen refresh rate may be a lot of friends know less, often easy to screen refresh rate and screen resolution of the two different concepts to confuse. In response to this problem, we first to introduce what is the screen refresh rate, and then for you to introduce the screen refresh rate how much appropriate.

What is screen refresh rate:

Screen refresh frequency: For CRT monitors, the screen graphics image is caused by the electron beam hit and light-emitting fluorescence points, because the cathode ray tube in the phosphor by the beam after the light of the time is very short, so the electron beam must constantly hit the phosphor to make it continue to glow.

Generally speaking, the screen refresh rate to reach more than 75HZ, the human eye is not easy to feel the flicker of the screen, CRT display's refresh rate is determined by its line frequency and the resolution at that time, the higher the line frequency, the higher the refresh rate under the same resolution, and the higher the resolution, the lower the refresh rate it can achieve. And for LCD there is no refresh rate problem, it does not need to refresh. Because each pixel in the LCD is continuously emitting, until the voltage changes and is sent to the controller, so the LCD will not have "constantly charge and discharge" and caused by flicker.

How much screen refresh rate is appropriate

For the traditional CRT display is flat-screen display, the lower the refresh frequency, the image flicker and jitter of the more severe, the faster the eye fatigue. Sometimes can cause the eye ache, dizzy and so on symptom. Because the 60Hz is exactly the same as the frequency of the flash lamp, so when the monitor is in the 60Hz refresh frequency will produce an uncomfortable stroboscopic effect. And when the use of more than 70Hz refresh frequency can basically eliminate flicker. As a result, the 70Hz refresh rate is the minimum required for the display to work stably. In addition, there is a common display performance parameter is the line frequency, that is, the level of scanning frequency, refers to the electronic gun per second on the screen scanned the level of points, in khz as the unit. The larger the value, the better, at least to reach 50KHz.

Because of the traditional CRT display basic elimination, for today's LCD LCD display flicker frequency is not adjustable. We use the host to connect the LCD display, although also in the Desktop Point right button refresh rate. But that adjust refresh rate on the lamp strobe is not used, that adjust refresh rate is only to reduce the burden of the graphics card. There is no effect on the LCD. Usually we will have 60HZ and 75HZ two refresh rate can be adjusted, recommended to 60, can reduce the burden of graphics card.

Accurately, the LCD and LED LCD screen refresh rate is only related to the display panel, while the ordinary computer LCD display is used in the LCD panel and backlight source structure, LCD and led are just two different light sources and the refresh rate is completely not related. LCD display default at 60 Hertz on it, we can understand.