Factors affecting the display effect of LED display
Influence LED full-color display LED full-color display is very many factors, including the environment, the display itself, as well as operating methods, control systems and so on, as a user of the LED display or want to buy display users, should have a certain understanding of this, in order to better access to the products they want. Here are some of the main factors:
First, the screen body flatness and screen body appearance reflectivity
LED full-color display screen local convex or concave will lead to the display of the visual angle of the dead angle, the appearance of flatness should be within ± 1mm, in order to ensure that the display image does not distort, regular manufacturers of LED full-color display through the panel and LED light-emitting diode special process disposal, to ensure that the screen body appearance flatness at the same time to reduce the reflectivity of the LED panel, but also to improve the contrast of the display (the higher the contrast, the higher the human eye, the higher the human eye, the higher the contrast. The higher the contrast, the easier it is for the human eye to distinguish between light and dark conversion process in the dynamic image)
Second, LED full-color display gray level gray level refers to the LED single-color brightness from the darkest to the brightest brightness level can be distinguished between, the higher the gray level, the richer the color, the more colorful; Conversely, the display color is single, simple changes. Gray scale level increase, can greatly enhance the color depth, make the image color display level is geometric increase. LED full-color display of regular manufacturers, will use high-quality LED lights, gray level up to 16384 level, low brightness and high gray, the picture is more clear and vivid, the picture quality is more delicate.
Third, point spacing
The impact of point spacing on clarity is very obvious, the smaller the point spacing, the more delicate the screen display. Point spacing must have a mature technology as the core support, from the current trend, the gradual reduction of point spacing is the market's sure choice. However, relatively speaking, the smaller the pitch, the higher the price.
Fourth, lamp bead quality and failure rate
LED full-color display is made up of tens of thousands or even hundreds of thousands of groups of red, green, blue three kinds of LED lamp beads. LED lamp beads with the increase in the use of time the brightness will slowly decay. LED lamp beads brightness decay speed and LED chip, auxiliary materials, packaging process have some correlation. Generally speaking, 1000 hours, 20 mAh after room temperature lighting test, red LED beads should be less than 7% attenuation, five, the use of stability and security. LED full color display in operation. Blue, green LED lamp bead attenuation should be less than 10% red, green, blue attenuation of the consistency of the LED full-color display later white balance has a great impact, which in turn affects the display fidelity of the display. At the same time, good lamp beads failure rate is low, even if aging 72 hours failure rate is not higher than one ten thousandth.
Fifth, the use of stability and security
LED full color display in operation, stability and safety is particularly important. Case design is very important components of the thermal conversion of the temperature increases, will lead to a decline in the quality of the image screen. Therefore, good ventilation and heat dissipation design is an indispensable and important indicator in the box design. On the one hand, its circuit protection, on the other hand, peace of mind, etc., as well as dustproof, waterproof role. At the same time, supporting the power supply can not just look at the low price and ignore its performance and quality, different temperature conditions of the power supply, the stability of its work, the output voltage and load capacity will be different, because it serves as an after-sales warranty role, so its performance directly affects the quality of the picture.
