1. The flatness of the screen and the reflectivity of the screen surface

Partial protrusions or recesses of the LED display will cause a blind angle in the viewing angle of the display. The surface flatness must be within ±1mm to ensure that the displayed image is not distorted. Special processing is carried out to reduce the reflectivity of the LED panel while ensuring the flatness of the screen surface, and also improve the contrast of the display (the higher the contrast, the easier it is for human eyes to distinguish the light-dark conversion process in the dynamic image).

Second, the gray level of the LED display

The gray level refers to the brightness level that can be distinguished from the darkest to the brightest in the single primary color brightness of the full-color LED display. The higher the gray level, the richer the color and the brighter the color; on the contrary, the display color is single and changes. Simple. The increase of the gray level can greatly increase the color depth, making the display level of the image color increase geometrically. Lianchengfa's LED display uses high-quality LED lights with a gray level of up to 16384, low brightness and high gray, the picture is clearer and brighter, and the picture quality is more delicate.

Three, point spacing

The dot pitch has a very obvious impact on the definition. The smaller the dot pitch, the more delicate the screen display. The reduction of dot pitch must have mature technology as the core support. Judging from the current trend, the reduction of dot pitch is an inevitable choice for the market. However, relatively speaking, the smaller the dot pitch, the greater the input cost and the higher the price.

Fourth, the quality and failure rate of lamp beads

The LED display is composed of tens of thousands or even hundreds of thousands of groups of red, green and blue LED lamp beads. The brightness of the LED lamp beads will slowly decay as the use time increases. The decay speed of the brightness of LED lamp beads is related to the LED chip, auxiliary materials, and packaging technology to a certain extent. Generally speaking, after 1000 hours, 20 mA normal temperature lighting test, the attenuation of the red LED lamp beads should be less than 7%, and the attenuation of the blue and green LED lamp beads should be less than 10%. The uniformity of red, green, and blue attenuation has a great impact on the white balance of the full-color LED display in the future, which in turn affects the display fidelity of the display. At the same time, the failure rate of a good lamp is low, even if it is aged for 72 hours, the failure rate will not be higher than one in ten thousand.

Five, use stability and safety

When the LED display is in operation, the stability and safety are particularly important. The cabinet design of the LED display is very important. The increase in the temperature of the thermal conversion of the components will cause the image quality to decrease. Therefore, a good ventilation and heat dissipation design is an indispensable and important indicator in the cabinet design. On the one hand, its circuit protection, on the other hand, it is safety, as well as dust and water resistance. At the same time, the matching power supply can't just look at its low price and ignore its performance and quality. The power supply under different temperature conditions will have different working stability, output voltage and load capacity, because it serves as an after-sales guarantee. So its safety performance directly affects the quality of the picture.

After ensuring the above five points, if you want the LED display to achieve the best display effect, you must also ensure a good use environment. If the actual working temperature exceeds the specified use range of the product, not only its life will be shortened, but the product itself will also be seriously affected. Damage. Pay attention to the best shooting distance when shooting. LED screens with different dot pitches and different fill factors have different suitable shooting distances. If the person is too close to the screen, when shooting close-up shots, the background will appear grainy, and it is easy to produce moire interference. It needs to be adjusted to the corresponding color temperature in the indoor environment. Only when the color temperature of the indoor lighting is consistent can it be accurate in the shooting. The color reproduction.

Warm reminder: When purchasing LED display products, users should choose a regular LED display manufacturer. In this way, no matter in terms of LED display quality, price or after-sales service, it will be safer and rest assured!