The performance of the LED display mainly includes the following aspects such as grayscale, refresh rate, and contrast:
Gray scale, also called color scale or gray scale, refers to the brightness of the display screen, and it is the determining factor of the number of colors displayed on the LED display screen. Generally speaking, the higher the grayscale of the LED display, the richer the color displayed, the more delicate the picture, and the easier it is to show rich details.
The refresh rate refers to the number of times that the electron beam scans the image on the screen repeatedly. The higher the refresh rate, the better the stability of the picture displayed on the LED display, the higher the resolution of the display, and the high definition of the picture without delay. People bring very comfortable enjoyment.
Contrast refers to the measurement of different brightness levels between the brightest white and the darkest black in the bright and dark areas of an image. The larger the difference range, the greater the contrast, and vice versa, the smaller the contrast. Contrast affects the vision of the LED display. One of the key factors of effect. Generally speaking, the higher the contrast, the clearer and more eye-catching the image, and the brighter and brighter the color. High contrast is of great help to image clarity, detail performance, and gray level performance.
Secondly, to distinguish the quality of the LED display, we can also feel it from the intuitive visual effects:
1. The surface flatness of the LED display. The flatness of the surface of the display screen should be within ±1mm to ensure that the displayed image is not distorted. Partial protrusions or recesses on the screen body will cause a blind spot in the viewing angle of the display screen. We look at the side of the screen and gently touch the surface of the screen to feel the flatness of the screen. The quality of flatness is mainly determined by the production process.
2. White balance effect. Through the red, green, and blue full-color test and white balance test of LED display products, we can see whether the LED display shows color cast and adjust it in time.
3. Brightness and viewing angle. The brightness of the indoor LED rental screen is generally between 800cd/m2-1200cd/m2, and the brightness of the outdoor LED rental screen must be above 1500cd/m2 to ensure the normal operation of the display, otherwise the brightness will be too low and you will not be able to see clearly The displayed image.
