The overall effect of an led screen is directly affected by an outdoor led display that is less effective. So how do we make the led display more visible outdoors? The contrast ratio, refresh frequency, and grey scale of full color LED display directly affect the display effect of LED full-color display.
One, the contrast enhancement
Contrast is one of the key factors that affect the visual effect, generally speaking, the higher the contrast, the sharper the image, the more brightly colored the color. High contrast is helpful in the clarity, detail, and gray level of the image. In some black-and-white contrast text, video display, high contrast led display has advantages in black and white contrast, clarity, integrity and so on. Contrast for dynamic video display effects to be bigger, because of the dynamic image of light and shade change is faster, the higher the contrast, the easier the eyes distinguish the conversion process.
Two main ways of improving the contrast of display screen
Reducing LED display surface reflectivity is the result of special processing of LED panels and LED leds, reducing the reflectivity of LED panels and improving the contrast of LED display. The NX series of dots is a 4mm LED all-color high-end display, from 950:1 to 4, 000:1, making the product a big improvement on the key indicator of contrast.
Improving the brightness of led displays on leds is not as good as it is in some cases. For example, indoor displays, if they are too bright, create light pollution and damage the viewer's vision.
Gray level
Grey scale refers to the led display from the darkest to the brightest in the single color brightness can distinguish between the brightness of the series, led display gray level is higher, the color is rich, colour is gorgeous; Instead, the color is simple and the change is simple. The increase of grey degree level can greatly increase the color depth, so that the display level of image color increases geometrically. LED grey degree control rating is 14bit ~ 16bit, which makes the high end display product image level resolution detail and display effect all reached the advanced level of the world. With the development of hardware technology, the LED grey scale will continue to develop to higher control accuracy.