LED Display And Refresh Rate

What is the refresh rate for LED Display?


The refresh rate of a LED display is the number of times in a second that the LED display hardware draws the data. This is distinct from the measure of frame rate in that the refresh rate for LED display s includes the repeated drawing of identical frames, while frame rate measures how often a video source can feed an entire frame of new data to a display.


For example, most movie projectors advance from one frame to the next one 24 times each second. But each frame is illuminated two or three times before the next frame is projected using a shutter in front of its lamp. As a result, the movie projector runs at 24 frames per second, but has a 48 or 72 Hz refresh rate.




Increase refresh rate for decreasing LED Display flickering


The refresh rate for LED Displays is around 400 Hz minimum. But around this value, video cameras can capture flickering image on the LED Displays. For flicker-free images, refresh rate should be over 1000 Hz. On modern LED screens, depending on screen size and scanning type, refresh rates as high as 9000 Hz are easily achievable. High refresh rates may seem to be good, but for high refresh rates, LED screen processor will have to spend more time to draw the frame to the screen, so overall brightness can decrease. For high refresh rates, the led screen hardware should be capable of high frequencies. If not, there may be unwanted lines or shadows on the image.


* As a disadvantage of high refresh rate, the LED display lifetime would be short, to a certain extent. 
* When bring out a solution, Newstar sales engineers will consider well your application, and provide the most suitable one to you.



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