Shenzhen Lianchengfa Technology Co., Ltd.

At present, there are more and more LED screens on the market, and the quality of the LED screen is different. Before we buy the LED screen, how should we identify the quality of the LED screen?

One, flatness

LED display screen flatness should be within ±1mm, to ensure that the display image will not be distorted, local convex or concave will cause the display visual Angle of the dead Angle. The flatness depends mainly on the production process.

Two, brightness and visual Angle

The brightness of indoor full-color LED screen should be above 800cd/m2, and that of outdoor full-color LED screen should be above 1500cd/m2. Otherwise, the brightness is too low to display the picture clearly. The brightness of LED tube core mainly depends on its brightness.

The visual Angle of LED display directly determines the number of viewers, so the bigger the better. The Angle of view of the tube core depends mainly on its packaging method.

White balance

Whiteness balance is an important indicator of LED display. In chromology, when the ratio of red, green and blue primary colors is 1:4:6:0.16, pure white will appear. If the actual ratio is slightly deviated, the deviation of white balance will appear. Generally, attention should be paid to whether the white is bluish or yellow-green. The whiteness balance mainly depends on the control system of LED display screen, and the tube core affects the color reduction.

Four, the reducibility of color

LED display color reducibility refers to the color reducibility of LED display screen, that is, the color of display screen should be highly consistent with the color of the source to ensure the sense of reality of the image.

Five, whether there are puzzles and dead point phenomenon

Jigsaw puzzle refers to the small four squares that appear on LED display to be steady on or often black. There are already bad phenomena of module. The main reason is that the connector program used by the display is not qualified. "Dead spot" refers to a single point on the LED display that is always on or often black, and its number mainly depends on the merits of the tube core.

Six, there is no color block

Color block refers to the obvious color difference between adjacent modules, and the color transition is based on modules. The phenomenon of color block on LED screen is mainly caused by the imperfect control system, low gray level and low scanning frequency.

The above is the joint chengfa xiaobian collation of several ways to identify the quality of LED screen, only for your reference!